-// Copyright 2006 Dan Vanderkam (danvdk@gmail.com)
-// All Rights Reserved.
+/**
+ * @license
+ * Copyright 2006 Dan Vanderkam (danvdk@gmail.com)
+ * MIT-licensed (http://opensource.org/licenses/MIT)
+ */
/**
* @fileoverview Creates an interactive, zoomable graph based on a CSV file or
Dygraph.DEFAULT_WIDTH = 480;
Dygraph.DEFAULT_HEIGHT = 320;
-Dygraph.LOG_SCALE = 10;
-Dygraph.LN_TEN = Math.log(Dygraph.LOG_SCALE);
-/** @private */
-Dygraph.log10 = function(x) {
- return Math.log(x) / Dygraph.LN_TEN;
-}
+// These are defined before DEFAULT_ATTRS so that it can refer to them.
+/**
+ * @private
+ * Return a string version of a number. This respects the digitsAfterDecimal
+ * and maxNumberWidth options.
+ * @param {Number} x The number to be formatted
+ * @param {Dygraph} opts An options view
+ * @param {String} name The name of the point's data series
+ * @param {Dygraph} g The dygraph object
+ */
+Dygraph.numberValueFormatter = function(x, opts, pt, g) {
+ var sigFigs = opts('sigFigs');
+
+ if (sigFigs !== null) {
+ // User has opted for a fixed number of significant figures.
+ return Dygraph.floatFormat(x, sigFigs);
+ }
+
+ var digits = opts('digitsAfterDecimal');
+ var maxNumberWidth = opts('maxNumberWidth');
+
+ // switch to scientific notation if we underflow or overflow fixed display.
+ if (x !== 0.0 &&
+ (Math.abs(x) >= Math.pow(10, maxNumberWidth) ||
+ Math.abs(x) < Math.pow(10, -digits))) {
+ return x.toExponential(digits);
+ } else {
+ return '' + Dygraph.round_(x, digits);
+ }
+};
+
+/**
+ * variant for use as an axisLabelFormatter.
+ * @private
+ */
+Dygraph.numberAxisLabelFormatter = function(x, granularity, opts, g) {
+ return Dygraph.numberValueFormatter(x, opts, g);
+};
+
+/**
+ * Convert a JS date (millis since epoch) to YYYY/MM/DD
+ * @param {Number} date The JavaScript date (ms since epoch)
+ * @return {String} A date of the form "YYYY/MM/DD"
+ * @private
+ */
+Dygraph.dateString_ = function(date) {
+ var zeropad = Dygraph.zeropad;
+ var d = new Date(date);
+
+ // Get the year:
+ var year = "" + d.getFullYear();
+ // Get a 0 padded month string
+ var month = zeropad(d.getMonth() + 1); //months are 0-offset, sigh
+ // Get a 0 padded day string
+ var day = zeropad(d.getDate());
+
+ var ret = "";
+ var frac = d.getHours() * 3600 + d.getMinutes() * 60 + d.getSeconds();
+ if (frac) ret = " " + Dygraph.hmsString_(date);
+
+ return year + "/" + month + "/" + day + ret;
+};
+
+/**
+ * Convert a JS date to a string appropriate to display on an axis that
+ * is displaying values at the stated granularity.
+ * @param {Date} date The date to format
+ * @param {Number} granularity One of the Dygraph granularity constants
+ * @return {String} The formatted date
+ * @private
+ */
+Dygraph.dateAxisFormatter = function(date, granularity) {
+ if (granularity >= Dygraph.DECADAL) {
+ return date.strftime('%Y');
+ } else if (granularity >= Dygraph.MONTHLY) {
+ return date.strftime('%b %y');
+ } else {
+ var frac = date.getHours() * 3600 + date.getMinutes() * 60 + date.getSeconds() + date.getMilliseconds();
+ if (frac == 0 || granularity >= Dygraph.DAILY) {
+ return new Date(date.getTime() + 3600*1000).strftime('%d%b');
+ } else {
+ return Dygraph.hmsString_(date.getTime());
+ }
+ }
+};
+
// Default attribute values.
Dygraph.DEFAULT_ATTRS = {
highlightCircleSize: 3,
- pixelsPerXLabel: 60,
- pixelsPerYLabel: 30,
labelsDivWidth: 250,
labelsDivStyles: {
labelsKMG2: false,
showLabelsOnHighlight: true,
- yValueFormatter: function(a,b) { return Dygraph.numberFormatter(a,b); },
digitsAfterDecimal: 2,
maxNumberWidth: 6,
sigFigs: null,
axisLabelFontSize: 14,
xAxisLabelWidth: 50,
yAxisLabelWidth: 50,
- xAxisLabelFormatter: Dygraph.dateAxisFormatter,
rightGap: 5,
showRoller: false,
- xValueFormatter: Dygraph.dateString_,
xValueParser: Dygraph.dateParser,
- xTicker: Dygraph.dateTicker,
delimiter: ',',
drawXGrid: true,
gridLineColor: "rgb(128,128,128)",
- interactionModel: null // will be set to Dygraph.defaultInteractionModel.
+ interactionModel: null, // will be set to Dygraph.Interaction.defaultModel
+
+ // Range selector options
+ showRangeSelector: false,
+ rangeSelectorHeight: 40,
+ rangeSelectorPlotStrokeColor: "#808FAB",
+ rangeSelectorPlotFillColor: "#A7B1C4",
+
+ // per-axis options
+ axes: {
+ x: {
+ pixelsPerLabel: 60,
+ axisLabelFormatter: Dygraph.dateAxisFormatter,
+ valueFormatter: Dygraph.dateString_,
+ ticker: null // will be set in dygraph-tickers.js
+ },
+ y: {
+ pixelsPerLabel: 30,
+ valueFormatter: Dygraph.numberValueFormatter,
+ axisLabelFormatter: Dygraph.numberAxisLabelFormatter,
+ ticker: null // will be set in dygraph-tickers.js
+ },
+ y2: {
+ pixelsPerLabel: 30,
+ valueFormatter: Dygraph.numberValueFormatter,
+ axisLabelFormatter: Dygraph.numberAxisLabelFormatter,
+ ticker: null // will be set in dygraph-tickers.js
+ }
+ }
};
-// Various logging levels.
-Dygraph.DEBUG = 1;
-Dygraph.INFO = 2;
-Dygraph.WARNING = 3;
-Dygraph.ERROR = 3;
-
// Directions for panning and zooming. Use bit operations when combined
// values are possible.
Dygraph.HORIZONTAL = 1;
// Used for initializing annotation CSS rules only once.
Dygraph.addedAnnotationCSS = false;
-/**
- * @private
- * Return the 2d context for a dygraph canvas.
- *
- * This method is only exposed for the sake of replacing the function in
- * automated tests, e.g.
- *
- * var oldFunc = Dygraph.getContext();
- * Dygraph.getContext = function(canvas) {
- * var realContext = oldFunc(canvas);
- * return new Proxy(realContext);
- * };
- */
-Dygraph.getContext = function(canvas) {
- return canvas.getContext("2d");
-};
-
Dygraph.prototype.__old_init__ = function(div, file, labels, attrs) {
// Labels is no longer a constructor parameter, since it's typically set
// directly from the data source. It also conains a name for the x-axis,
document.readyState != 'complete') {
var self = this;
setTimeout(function() { self.__init__(div, file, attrs) }, 100);
+ return;
}
// Support two-argument constructor
if (attrs == null) { attrs = {}; }
+ attrs = Dygraph.mapLegacyOptions_(attrs);
+
+ if (!div) {
+ Dygraph.error("Constructing dygraph with a non-existent div!");
+ return;
+ }
+
+ this.isUsingExcanvas_ = typeof(G_vmlCanvasManager) != 'undefined';
+
// Copy the important bits into the object
// TODO(danvk): most of these should just stay in the attrs_ dictionary.
this.maindiv_ = div;
// div, then only one will be drawn.
div.innerHTML = "";
- // If the div isn't already sized then inherit from our attrs or
- // give it a default size.
- if (div.style.width == '') {
- div.style.width = (attrs.width || Dygraph.DEFAULT_WIDTH) + "px";
- }
- if (div.style.height == '') {
- div.style.height = (attrs.height || Dygraph.DEFAULT_HEIGHT) + "px";
+ // For historical reasons, the 'width' and 'height' options trump all CSS
+ // rules _except_ for an explicit 'width' or 'height' on the div.
+ // As an added convenience, if the div has zero height (like <div></div> does
+ // without any styles), then we use a default height/width.
+ if (div.style.width == '' && attrs.width) {
+ div.style.width = attrs.width + "px";
}
- this.width_ = parseInt(div.style.width, 10);
- this.height_ = parseInt(div.style.height, 10);
- // The div might have been specified as percent of the current window size,
- // convert that to an appropriate number of pixels.
- if (div.style.width.indexOf("%") == div.style.width.length - 1) {
- this.width_ = div.offsetWidth;
+ if (div.style.height == '' && attrs.height) {
+ div.style.height = attrs.height + "px";
}
- if (div.style.height.indexOf("%") == div.style.height.length - 1) {
- this.height_ = div.offsetHeight;
- }
-
- if (this.width_ == 0) {
- this.error("dygraph has zero width. Please specify a width in pixels.");
- }
- if (this.height_ == 0) {
- this.error("dygraph has zero height. Please specify a height in pixels.");
+ if (div.style.height == '' && div.clientHeight == 0) {
+ div.style.height = Dygraph.DEFAULT_HEIGHT + "px";
+ if (div.style.width == '') {
+ div.style.width = Dygraph.DEFAULT_WIDTH + "px";
+ }
}
+ // these will be zero if the dygraph's div is hidden.
+ this.width_ = div.clientWidth;
+ this.height_ = div.clientHeight;
// TODO(danvk): set fillGraph to be part of attrs_ here, not user_attrs_.
if (attrs['stackedGraph']) {
this.user_attrs_ = {};
Dygraph.update(this.user_attrs_, attrs);
+ // This sequence ensures that Dygraph.DEFAULT_ATTRS is never modified.
this.attrs_ = {};
- Dygraph.update(this.attrs_, Dygraph.DEFAULT_ATTRS);
+ Dygraph.updateDeep(this.attrs_, Dygraph.DEFAULT_ATTRS);
this.boundaryIds_ = [];
}
};
-// TODO(danvk): any way I can get the line numbers to be this.warn call?
/**
* @private
- * Log an error on the JS console at the given severity.
- * @param { Integer } severity One of Dygraph.{DEBUG,INFO,WARNING,ERROR}
- * @param { String } The message to log.
+ * @param String} axis The name of the axis (i.e. 'x', 'y' or 'y2')
+ * @return { ... } A function mapping string -> option value
*/
-Dygraph.prototype.log = function(severity, message) {
- if (typeof(console) != 'undefined') {
- switch (severity) {
- case Dygraph.DEBUG:
- console.debug('dygraphs: ' + message);
- break;
- case Dygraph.INFO:
- console.info('dygraphs: ' + message);
- break;
- case Dygraph.WARNING:
- console.warn('dygraphs: ' + message);
- break;
- case Dygraph.ERROR:
- console.error('dygraphs: ' + message);
- break;
+Dygraph.prototype.optionsViewForAxis_ = function(axis) {
+ var self = this;
+ return function(opt) {
+ var axis_opts = self.user_attrs_['axes'];
+ if (axis_opts && axis_opts[axis] && axis_opts[axis][opt]) {
+ return axis_opts[axis][opt];
+ }
+ // user-specified attributes always trump defaults, even if they're less
+ // specific.
+ if (typeof(self.user_attrs_[opt]) != 'undefined') {
+ return self.user_attrs_[opt];
}
- }
-};
-
-/** @private */
-Dygraph.prototype.info = function(message) {
- this.log(Dygraph.INFO, message);
-};
-
-/** @private */
-Dygraph.prototype.warn = function(message) {
- this.log(Dygraph.WARNING, message);
-};
-/** @private */
-Dygraph.prototype.error = function(message) {
- this.log(Dygraph.ERROR, message);
+ axis_opts = self.attrs_['axes'];
+ if (axis_opts && axis_opts[axis] && axis_opts[axis][opt]) {
+ return axis_opts[axis][opt];
+ }
+ // check old-style axis options
+ // TODO(danvk): add a deprecation warning if either of these match.
+ if (axis == 'y' && self.axes_[0].hasOwnProperty(opt)) {
+ return self.axes_[0][opt];
+ } else if (axis == 'y2' && self.axes_[1].hasOwnProperty(opt)) {
+ return self.axes_[1][opt];
+ }
+ return self.attr_(opt);
+ };
};
/**
*/
Dygraph.prototype.yAxisRange = function(idx) {
if (typeof(idx) == "undefined") idx = 0;
- if (idx < 0 || idx >= this.axes_.length) return null;
- return [ this.axes_[idx].computedValueRange[0],
- this.axes_[idx].computedValueRange[1] ];
+ if (idx < 0 || idx >= this.axes_.length) {
+ return null;
+ }
+ var axis = this.axes_[idx];
+ return [ axis.computedValueRange[0], axis.computedValueRange[1] ];
};
/**
};
/**
- * @private
- * Add an event handler. This smooths a difference between IE and the rest of
- * the world.
- * @param { DOM element } el The element to add the event to.
- * @param { String } evt The name of the event, e.g. 'click' or 'mousemove'.
- * @param { Function } fn The function to call on the event. The function takes
- * one parameter: the event object.
- */
-Dygraph.addEvent = function(el, evt, fn) {
- var normed_fn = function(e) {
- if (!e) var e = window.event;
- fn(e);
- };
- if (window.addEventListener) { // Mozilla, Netscape, Firefox
- el.addEventListener(evt, normed_fn, false);
- } else { // IE
- el.attachEvent('on' + evt, normed_fn);
- }
-};
-
-
-/**
- * @private
- * Cancels further processing of an event. This is useful to prevent default
- * browser actions, e.g. highlighting text on a double-click.
- * Based on the article at
- * http://www.switchonthecode.com/tutorials/javascript-tutorial-the-scroll-wheel
- * @param { Event } e The event whose normal behavior should be canceled.
- */
-Dygraph.cancelEvent = function(e) {
- e = e ? e : window.event;
- if (e.stopPropagation) {
- e.stopPropagation();
- }
- if (e.preventDefault) {
- e.preventDefault();
- }
- e.cancelBubble = true;
- e.cancel = true;
- e.returnValue = false;
- return false;
-};
-
-
-/**
* Generates interface elements for the Dygraph: a containing div, a div to
* display the current point, and a textbox to adjust the rolling average
* period. Also creates the Renderer/Layout elements.
this.hidden_ = this.createPlotKitCanvas_(this.canvas_);
this.hidden_ctx_ = Dygraph.getContext(this.hidden_);
+ if (this.attr_('showRangeSelector')) {
+ // The range selector must be created here so that its canvases and contexts get created here.
+ // For some reason, if the canvases and contexts don't get created here, things don't work in IE.
+ // The range selector also sets xAxisHeight in order to reserve space.
+ this.rangeSelector_ = new DygraphRangeSelector(this);
+ }
+
// The interactive parts of the graph are drawn on top of the chart.
this.graphDiv.appendChild(this.hidden_);
this.graphDiv.appendChild(this.canvas_);
- this.mouseEventElement_ = this.canvas_;
+ this.mouseEventElement_ = this.createMouseEventElement_();
+
+ // Create the grapher
+ this.layout_ = new DygraphLayout(this);
+
+ if (this.rangeSelector_) {
+ // This needs to happen after the graph canvases are added to the div and the layout object is created.
+ this.rangeSelector_.addToGraph(this.graphDiv, this.layout_);
+ }
+
+ // Create the grapher
+ this.layout_ = new DygraphLayout(this);
+
+ if (this.rangeSelector_) {
+ // This needs to happen after the graph canvases are added to the div and the layout object is created.
+ this.rangeSelector_.addToGraph(this.graphDiv, this.layout_);
+ }
var dygraph = this;
Dygraph.addEvent(this.mouseEventElement_, 'mousemove', function(e) {
dygraph.mouseOut_(e);
});
- // Create the grapher
- this.layout_ = new DygraphLayout(this);
-
this.createStatusMessage_();
this.createDragInterface_();
+
+ // Update when the window is resized.
+ // TODO(danvk): drop frames depending on complexity of the chart.
+ Dygraph.addEvent(window, 'resize', function(e) {
+ dygraph.resize();
+ });
};
/**
};
/**
- * Convert hsv values to an rgb(r,g,b) string. Taken from MochiKit.Color. This
- * is used to generate default series colors which are evenly spaced on the
- * color wheel.
- * @param { Number } hue Range is 0.0-1.0.
- * @param { Number } saturation Range is 0.0-1.0.
- * @param { Number } value Range is 0.0-1.0.
- * @return { String } "rgb(r,g,b)" where r, g and b range from 0-255.
+ * Creates an overlay element used to handle mouse events.
+ * @return {Object} The mouse event element.
* @private
*/
-Dygraph.hsvToRGB = function (hue, saturation, value) {
- var red;
- var green;
- var blue;
- if (saturation === 0) {
- red = value;
- green = value;
- blue = value;
+Dygraph.prototype.createMouseEventElement_ = function() {
+ if (this.isUsingExcanvas_) {
+ var elem = document.createElement("div");
+ elem.style.position = 'absolute';
+ elem.style.backgroundColor = 'white';
+ elem.style.filter = 'alpha(opacity=0)';
+ elem.style.width = this.width_ + "px";
+ elem.style.height = this.height_ + "px";
+ this.graphDiv.appendChild(elem);
+ return elem;
} else {
- var i = Math.floor(hue * 6);
- var f = (hue * 6) - i;
- var p = value * (1 - saturation);
- var q = value * (1 - (saturation * f));
- var t = value * (1 - (saturation * (1 - f)));
- switch (i) {
- case 1: red = q; green = value; blue = p; break;
- case 2: red = p; green = value; blue = t; break;
- case 3: red = p; green = q; blue = value; break;
- case 4: red = t; green = p; blue = value; break;
- case 5: red = value; green = p; blue = q; break;
- case 6: // fall through
- case 0: red = value; green = t; blue = p; break;
- }
+ return this.canvas_;
}
- red = Math.floor(255 * red + 0.5);
- green = Math.floor(255 * green + 0.5);
- blue = Math.floor(255 * blue + 0.5);
- return 'rgb(' + red + ',' + green + ',' + blue + ')';
};
-
/**
* Generate a set of distinct colors for the data series. This is done with a
* color wheel. Saturation/Value are customizable, and the hue is
return this.colors_;
};
-// The following functions are from quirksmode.org with a modification for Safari from
-// http://blog.firetree.net/2005/07/04/javascript-find-position/
-// http://www.quirksmode.org/js/findpos.html
-
-/** @private */
-Dygraph.findPosX = function(obj) {
- var curleft = 0;
- if(obj.offsetParent)
- while(1)
- {
- curleft += obj.offsetLeft;
- if(!obj.offsetParent)
- break;
- obj = obj.offsetParent;
- }
- else if(obj.x)
- curleft += obj.x;
- return curleft;
-};
-
-
-/** @private */
-Dygraph.findPosY = function(obj) {
- var curtop = 0;
- if(obj.offsetParent)
- while(1)
- {
- curtop += obj.offsetTop;
- if(!obj.offsetParent)
- break;
- obj = obj.offsetParent;
- }
- else if(obj.y)
- curtop += obj.y;
- return curtop;
-};
-
-
/**
* Create the div that contains information on the selected point(s)
* This goes in the top right of the canvas, unless an external div has already
"overflow": "hidden"};
Dygraph.update(messagestyle, this.attr_('labelsDivStyles'));
var div = document.createElement("div");
+ div.className = "dygraph-legend";
for (var name in messagestyle) {
if (messagestyle.hasOwnProperty(name)) {
div.style[name] = messagestyle[name];
/**
* @private
- * Returns the x-coordinate of the event in a coordinate system where the
- * top-left corner of the page (not the window) is (0,0).
- * Taken from MochiKit.Signal
- */
-Dygraph.pageX = function(e) {
- if (e.pageX) {
- return (!e.pageX || e.pageX < 0) ? 0 : e.pageX;
- } else {
- var de = document;
- var b = document.body;
- return e.clientX +
- (de.scrollLeft || b.scrollLeft) -
- (de.clientLeft || 0);
- }
-};
-
-/**
- * @private
- * Returns the y-coordinate of the event in a coordinate system where the
- * top-left corner of the page (not the window) is (0,0).
- * Taken from MochiKit.Signal
- */
-Dygraph.pageY = function(e) {
- if (e.pageY) {
- return (!e.pageY || e.pageY < 0) ? 0 : e.pageY;
- } else {
- var de = document;
- var b = document.body;
- return e.clientY +
- (de.scrollTop || b.scrollTop) -
- (de.clientTop || 0);
- }
-};
-
-/**
- * @private
* Converts page the x-coordinate of the event to pixel x-coordinates on the
* canvas (i.e. DOM Coords).
*/
};
/**
- * A collection of functions to facilitate build custom interaction models.
- * @class
+ * Set up all the mouse handlers needed to capture dragging behavior for zoom
+ * events.
+ * @private
*/
-Dygraph.Interaction = {};
+Dygraph.prototype.createDragInterface_ = function() {
+ var context = {
+ // Tracks whether the mouse is down right now
+ isZooming: false,
+ isPanning: false, // is this drag part of a pan?
+ is2DPan: false, // if so, is that pan 1- or 2-dimensional?
+ dragStartX: null, // pixel coordinates
+ dragStartY: null, // pixel coordinates
+ dragEndX: null, // pixel coordinates
+ dragEndY: null, // pixel coordinates
+ dragDirection: null,
+ prevEndX: null, // pixel coordinates
+ prevEndY: null, // pixel coordinates
+ prevDragDirection: null,
-/**
- * Called in response to an interaction model operation that
- * should start the default panning behavior.
- *
- * It's used in the default callback for "mousedown" operations.
- * Custom interaction model builders can use it to provide the default
- * panning behavior.
- *
- * @param { Event } event the event object which led to the startPan call.
- * @param { Dygraph} g The dygraph on which to act.
- * @param { Object} context The dragging context object (with
- * dragStartX/dragStartY/etc. properties). This function modifies the context.
- */
-Dygraph.Interaction.startPan = function(event, g, context) {
- context.isPanning = true;
- var xRange = g.xAxisRange();
- context.dateRange = xRange[1] - xRange[0];
- context.initialLeftmostDate = xRange[0];
- context.xUnitsPerPixel = context.dateRange / (g.plotter_.area.w - 1);
+ // The value on the left side of the graph when a pan operation starts.
+ initialLeftmostDate: null,
- if (g.attr_("panEdgeFraction")) {
- var maxXPixelsToDraw = g.width_ * g.attr_("panEdgeFraction");
- var xExtremes = g.xAxisExtremes(); // I REALLY WANT TO CALL THIS xTremes!
+ // The number of units each pixel spans. (This won't be valid for log
+ // scales)
+ xUnitsPerPixel: null,
- var boundedLeftX = g.toDomXCoord(xExtremes[0]) - maxXPixelsToDraw;
- var boundedRightX = g.toDomXCoord(xExtremes[1]) + maxXPixelsToDraw;
+ // TODO(danvk): update this comment
+ // The range in second/value units that the viewport encompasses during a
+ // panning operation.
+ dateRange: null,
- var boundedLeftDate = g.toDataXCoord(boundedLeftX);
- var boundedRightDate = g.toDataXCoord(boundedRightX);
- context.boundedDates = [boundedLeftDate, boundedRightDate];
+ // Top-left corner of the canvas, in DOM coords
+ // TODO(konigsberg): Rename topLeftCanvasX, topLeftCanvasY.
+ px: 0,
+ py: 0,
- var boundedValues = [];
- var maxYPixelsToDraw = g.height_ * g.attr_("panEdgeFraction");
+ // Values for use with panEdgeFraction, which limit how far outside the
+ // graph's data boundaries it can be panned.
+ boundedDates: null, // [minDate, maxDate]
+ boundedValues: null, // [[minValue, maxValue] ...]
- for (var i = 0; i < g.axes_.length; i++) {
- var axis = g.axes_[i];
- var yExtremes = axis.extremeRange;
+ initializeMouseDown: function(event, g, context) {
+ // prevents mouse drags from selecting page text.
+ if (event.preventDefault) {
+ event.preventDefault(); // Firefox, Chrome, etc.
+ } else {
+ event.returnValue = false; // IE
+ event.cancelBubble = true;
+ }
- var boundedTopY = g.toDomYCoord(yExtremes[0], i) + maxYPixelsToDraw;
- var boundedBottomY = g.toDomYCoord(yExtremes[1], i) - maxYPixelsToDraw;
+ context.px = Dygraph.findPosX(g.canvas_);
+ context.py = Dygraph.findPosY(g.canvas_);
+ context.dragStartX = g.dragGetX_(event, context);
+ context.dragStartY = g.dragGetY_(event, context);
+ }
+ };
- var boundedTopValue = g.toDataYCoord(boundedTopY);
- var boundedBottomValue = g.toDataYCoord(boundedBottomY);
+ var interactionModel = this.attr_("interactionModel");
- boundedValues[i] = [boundedTopValue, boundedBottomValue];
- }
- context.boundedValues = boundedValues;
- }
+ // Self is the graph.
+ var self = this;
- // Record the range of each y-axis at the start of the drag.
- // If any axis has a valueRange or valueWindow, then we want a 2D pan.
- context.is2DPan = false;
- for (var i = 0; i < g.axes_.length; i++) {
- var axis = g.axes_[i];
- var yRange = g.yAxisRange(i);
- // TODO(konigsberg): These values should be in |context|.
- // In log scale, initialTopValue, dragValueRange and unitsPerPixel are log scale.
- if (axis.logscale) {
- axis.initialTopValue = Dygraph.log10(yRange[1]);
- axis.dragValueRange = Dygraph.log10(yRange[1]) - Dygraph.log10(yRange[0]);
- } else {
- axis.initialTopValue = yRange[1];
- axis.dragValueRange = yRange[1] - yRange[0];
- }
- axis.unitsPerPixel = axis.dragValueRange / (g.plotter_.area.h - 1);
+ // Function that binds the graph and context to the handler.
+ var bindHandler = function(handler) {
+ return function(event) {
+ handler(event, self, context);
+ };
+ };
- // While calculating axes, set 2dpan.
- if (axis.valueWindow || axis.valueRange) context.is2DPan = true;
+ for (var eventName in interactionModel) {
+ if (!interactionModel.hasOwnProperty(eventName)) continue;
+ Dygraph.addEvent(this.mouseEventElement_, eventName,
+ bindHandler(interactionModel[eventName]));
}
-};
-/**
- * Called in response to an interaction model operation that
- * responds to an event that pans the view.
- *
- * It's used in the default callback for "mousemove" operations.
- * Custom interaction model builders can use it to provide the default
- * panning behavior.
- *
- * @param { Event } event the event object which led to the movePan call.
- * @param { Dygraph} g The dygraph on which to act.
- * @param { Object} context The dragging context object (with
- * dragStartX/dragStartY/etc. properties). This function modifies the context.
- */
-Dygraph.Interaction.movePan = function(event, g, context) {
- context.dragEndX = g.dragGetX_(event, context);
- context.dragEndY = g.dragGetY_(event, context);
-
- var minDate = context.initialLeftmostDate -
- (context.dragEndX - context.dragStartX) * context.xUnitsPerPixel;
- if (context.boundedDates) {
- minDate = Math.max(minDate, context.boundedDates[0]);
- }
- var maxDate = minDate + context.dateRange;
- if (context.boundedDates) {
- if (maxDate > context.boundedDates[1]) {
- // Adjust minDate, and recompute maxDate.
- minDate = minDate - (maxDate - context.boundedDates[1]);
- maxDate = minDate + context.dateRange;
+ // If the user releases the mouse button during a drag, but not over the
+ // canvas, then it doesn't count as a zooming action.
+ Dygraph.addEvent(document, 'mouseup', function(event) {
+ if (context.isZooming || context.isPanning) {
+ context.isZooming = false;
+ context.dragStartX = null;
+ context.dragStartY = null;
}
- }
- g.dateWindow_ = [minDate, maxDate];
-
- // y-axis scaling is automatic unless this is a full 2D pan.
- if (context.is2DPan) {
- // Adjust each axis appropriately.
- for (var i = 0; i < g.axes_.length; i++) {
- var axis = g.axes_[i];
-
- var pixelsDragged = context.dragEndY - context.dragStartY;
- var unitsDragged = pixelsDragged * axis.unitsPerPixel;
-
- var boundedValue = context.boundedValues ? context.boundedValues[i] : null;
-
- // In log scale, maxValue and minValue are the logs of those values.
- var maxValue = axis.initialTopValue + unitsDragged;
- if (boundedValue) {
- maxValue = Math.min(maxValue, boundedValue[1]);
- }
- var minValue = maxValue - axis.dragValueRange;
- if (boundedValue) {
- if (minValue < boundedValue[0]) {
- // Adjust maxValue, and recompute minValue.
- maxValue = maxValue - (minValue - boundedValue[0]);
- minValue = maxValue - axis.dragValueRange;
- }
- }
- if (axis.logscale) {
- axis.valueWindow = [ Math.pow(Dygraph.LOG_SCALE, minValue),
- Math.pow(Dygraph.LOG_SCALE, maxValue) ];
- } else {
- axis.valueWindow = [ minValue, maxValue ];
- }
- }
- }
-
- g.drawGraph_();
-};
-
-/**
- * Called in response to an interaction model operation that
- * responds to an event that ends panning.
- *
- * It's used in the default callback for "mouseup" operations.
- * Custom interaction model builders can use it to provide the default
- * panning behavior.
- *
- * @param { Event } event the event object which led to the startZoom call.
- * @param { Dygraph} g The dygraph on which to act.
- * @param { Object} context The dragging context object (with
- * dragStartX/dragStartY/etc. properties). This function modifies the context.
- */
-Dygraph.Interaction.endPan = function(event, g, context) {
- // TODO(konigsberg): Clear the context data from the axis.
- // TODO(konigsberg): mouseup should just delete the
- // context object, and mousedown should create a new one.
- context.isPanning = false;
- context.is2DPan = false;
- context.initialLeftmostDate = null;
- context.dateRange = null;
- context.valueRange = null;
- context.boundedDates = null;
- context.boundedValues = null;
-};
-
-/**
- * Called in response to an interaction model operation that
- * responds to an event that starts zooming.
- *
- * It's used in the default callback for "mousedown" operations.
- * Custom interaction model builders can use it to provide the default
- * zooming behavior.
- *
- * @param { Event } event the event object which led to the startZoom call.
- * @param { Dygraph} g The dygraph on which to act.
- * @param { Object} context The dragging context object (with
- * dragStartX/dragStartY/etc. properties). This function modifies the context.
- */
-Dygraph.Interaction.startZoom = function(event, g, context) {
- context.isZooming = true;
-};
-
-/**
- * Called in response to an interaction model operation that
- * responds to an event that defines zoom boundaries.
- *
- * It's used in the default callback for "mousemove" operations.
- * Custom interaction model builders can use it to provide the default
- * zooming behavior.
- *
- * @param { Event } event the event object which led to the moveZoom call.
- * @param { Dygraph} g The dygraph on which to act.
- * @param { Object} context The dragging context object (with
- * dragStartX/dragStartY/etc. properties). This function modifies the context.
- */
-Dygraph.Interaction.moveZoom = function(event, g, context) {
- context.dragEndX = g.dragGetX_(event, context);
- context.dragEndY = g.dragGetY_(event, context);
-
- var xDelta = Math.abs(context.dragStartX - context.dragEndX);
- var yDelta = Math.abs(context.dragStartY - context.dragEndY);
-
- // drag direction threshold for y axis is twice as large as x axis
- context.dragDirection = (xDelta < yDelta / 2) ? Dygraph.VERTICAL : Dygraph.HORIZONTAL;
-
- g.drawZoomRect_(
- context.dragDirection,
- context.dragStartX,
- context.dragEndX,
- context.dragStartY,
- context.dragEndY,
- context.prevDragDirection,
- context.prevEndX,
- context.prevEndY);
-
- context.prevEndX = context.dragEndX;
- context.prevEndY = context.dragEndY;
- context.prevDragDirection = context.dragDirection;
-};
-
-/**
- * Called in response to an interaction model operation that
- * responds to an event that performs a zoom based on previously defined
- * bounds..
- *
- * It's used in the default callback for "mouseup" operations.
- * Custom interaction model builders can use it to provide the default
- * zooming behavior.
- *
- * @param { Event } event the event object which led to the endZoom call.
- * @param { Dygraph} g The dygraph on which to end the zoom.
- * @param { Object} context The dragging context object (with
- * dragStartX/dragStartY/etc. properties). This function modifies the context.
- */
-Dygraph.Interaction.endZoom = function(event, g, context) {
- // TODO(konigsberg): Refactor or rename this fn -- it deals with clicks, too.
- context.isZooming = false;
- context.dragEndX = g.dragGetX_(event, context);
- context.dragEndY = g.dragGetY_(event, context);
- var regionWidth = Math.abs(context.dragEndX - context.dragStartX);
- var regionHeight = Math.abs(context.dragEndY - context.dragStartY);
-
- if (regionWidth < 2 && regionHeight < 2 &&
- g.lastx_ != undefined && g.lastx_ != -1) {
- // TODO(danvk): pass along more info about the points, e.g. 'x'
- if (g.attr_('clickCallback') != null) {
- g.attr_('clickCallback')(event, g.lastx_, g.selPoints_);
- }
- if (g.attr_('pointClickCallback')) {
- // check if the click was on a particular point.
- var closestIdx = -1;
- var closestDistance = 0;
- for (var i = 0; i < g.selPoints_.length; i++) {
- var p = g.selPoints_[i];
- var distance = Math.pow(p.canvasx - context.dragEndX, 2) +
- Math.pow(p.canvasy - context.dragEndY, 2);
- if (closestIdx == -1 || distance < closestDistance) {
- closestDistance = distance;
- closestIdx = i;
- }
- }
-
- // Allow any click within two pixels of the dot.
- var radius = g.attr_('highlightCircleSize') + 2;
- if (closestDistance <= 5 * 5) {
- g.attr_('pointClickCallback')(event, g.selPoints_[closestIdx]);
- }
- }
- }
-
- if (regionWidth >= 10 && context.dragDirection == Dygraph.HORIZONTAL) {
- g.doZoomX_(Math.min(context.dragStartX, context.dragEndX),
- Math.max(context.dragStartX, context.dragEndX));
- } else if (regionHeight >= 10 && context.dragDirection == Dygraph.VERTICAL) {
- g.doZoomY_(Math.min(context.dragStartY, context.dragEndY),
- Math.max(context.dragStartY, context.dragEndY));
- } else {
- g.canvas_ctx_.clearRect(0, 0, g.canvas_.width, g.canvas_.height);
- }
- context.dragStartX = null;
- context.dragStartY = null;
-};
-
-/**
- * Default interation model for dygraphs. You can refer to specific elements of
- * this when constructing your own interaction model, e.g.:
- * g.updateOptions( {
- * interactionModel: {
- * mousedown: Dygraph.defaultInteractionModel.mousedown
- * }
- * } );
- */
-Dygraph.Interaction.defaultModel = {
- // Track the beginning of drag events
- mousedown: function(event, g, context) {
- context.initializeMouseDown(event, g, context);
-
- if (event.altKey || event.shiftKey) {
- Dygraph.startPan(event, g, context);
- } else {
- Dygraph.startZoom(event, g, context);
- }
- },
-
- // Draw zoom rectangles when the mouse is down and the user moves around
- mousemove: function(event, g, context) {
- if (context.isZooming) {
- Dygraph.moveZoom(event, g, context);
- } else if (context.isPanning) {
- Dygraph.movePan(event, g, context);
- }
- },
-
- mouseup: function(event, g, context) {
- if (context.isZooming) {
- Dygraph.endZoom(event, g, context);
- } else if (context.isPanning) {
- Dygraph.endPan(event, g, context);
- }
- },
-
- // Temporarily cancel the dragging event when the mouse leaves the graph
- mouseout: function(event, g, context) {
- if (context.isZooming) {
- context.dragEndX = null;
- context.dragEndY = null;
- }
- },
-
- // Disable zooming out if panning.
- dblclick: function(event, g, context) {
- if (event.altKey || event.shiftKey) {
- return;
- }
- // TODO(konigsberg): replace g.doUnzoom()_ with something that is
- // friendlier to public use.
- g.doUnzoom_();
- }
-};
-
-Dygraph.DEFAULT_ATTRS.interactionModel = Dygraph.Interaction.defaultModel;
-
-// old ways of accessing these methods/properties
-Dygraph.defaultInteractionModel = Dygraph.Interaction.defaultModel;
-Dygraph.endZoom = Dygraph.Interaction.endZoom;
-Dygraph.moveZoom = Dygraph.Interaction.moveZoom;
-Dygraph.startZoom = Dygraph.Interaction.startZoom;
-Dygraph.endPan = Dygraph.Interaction.endPan;
-Dygraph.movePan = Dygraph.Interaction.movePan;
-Dygraph.startPan = Dygraph.Interaction.startPan;
-
-/**
- * Set up all the mouse handlers needed to capture dragging behavior for zoom
- * events.
- * @private
- */
-Dygraph.prototype.createDragInterface_ = function() {
- var context = {
- // Tracks whether the mouse is down right now
- isZooming: false,
- isPanning: false, // is this drag part of a pan?
- is2DPan: false, // if so, is that pan 1- or 2-dimensional?
- dragStartX: null,
- dragStartY: null,
- dragEndX: null,
- dragEndY: null,
- dragDirection: null,
- prevEndX: null,
- prevEndY: null,
- prevDragDirection: null,
-
- // The value on the left side of the graph when a pan operation starts.
- initialLeftmostDate: null,
-
- // The number of units each pixel spans. (This won't be valid for log
- // scales)
- xUnitsPerPixel: null,
-
- // TODO(danvk): update this comment
- // The range in second/value units that the viewport encompasses during a
- // panning operation.
- dateRange: null,
-
- // Utility function to convert page-wide coordinates to canvas coords
- px: 0,
- py: 0,
-
- // Values for use with panEdgeFraction, which limit how far outside the
- // graph's data boundaries it can be panned.
- boundedDates: null, // [minDate, maxDate]
- boundedValues: null, // [[minValue, maxValue] ...]
-
- initializeMouseDown: function(event, g, context) {
- // prevents mouse drags from selecting page text.
- if (event.preventDefault) {
- event.preventDefault(); // Firefox, Chrome, etc.
- } else {
- event.returnValue = false; // IE
- event.cancelBubble = true;
- }
-
- context.px = Dygraph.findPosX(g.canvas_);
- context.py = Dygraph.findPosY(g.canvas_);
- context.dragStartX = g.dragGetX_(event, context);
- context.dragStartY = g.dragGetY_(event, context);
- }
- };
-
- var interactionModel = this.attr_("interactionModel");
-
- // Self is the graph.
- var self = this;
-
- // Function that binds the graph and context to the handler.
- var bindHandler = function(handler) {
- return function(event) {
- handler(event, self, context);
- };
- };
-
- for (var eventName in interactionModel) {
- if (!interactionModel.hasOwnProperty(eventName)) continue;
- Dygraph.addEvent(this.mouseEventElement_, eventName,
- bindHandler(interactionModel[eventName]));
- }
-
- // If the user releases the mouse button during a drag, but not over the
- // canvas, then it doesn't count as a zooming action.
- Dygraph.addEvent(document, 'mouseup', function(event) {
- if (context.isZooming || context.isPanning) {
- context.isZooming = false;
- context.dragStartX = null;
- context.dragStartY = null;
- }
-
- if (context.isPanning) {
- context.isPanning = false;
- context.draggingDate = null;
- context.dateRange = null;
- for (var i = 0; i < self.axes_.length; i++) {
- delete self.axes_[i].draggingValue;
- delete self.axes_[i].dragValueRange;
- }
- }
- });
-};
+ if (context.isPanning) {
+ context.isPanning = false;
+ context.draggingDate = null;
+ context.dateRange = null;
+ for (var i = 0; i < self.axes_.length; i++) {
+ delete self.axes_[i].draggingValue;
+ delete self.axes_[i].dragValueRange;
+ }
+ }
+ });
+};
/**
* up any previous zoom rectangles that were drawn. This could be optimized to
* avoid extra redrawing, but it's tricky to avoid interactions with the status
* dots.
- *
+ *
* @param {Number} direction the direction of the zoom rectangle. Acceptable
* values are Dygraph.HORIZONTAL and Dygraph.VERTICAL.
* @param {Number} startX The X position where the drag started, in canvas
// Clean up from the previous rect if necessary
if (prevDirection == Dygraph.HORIZONTAL) {
- ctx.clearRect(Math.min(startX, prevEndX), 0,
- Math.abs(startX - prevEndX), this.height_);
+ ctx.clearRect(Math.min(startX, prevEndX), this.layout_.plotArea.y,
+ Math.abs(startX - prevEndX), this.layout_.plotArea.h);
} else if (prevDirection == Dygraph.VERTICAL){
- ctx.clearRect(0, Math.min(startY, prevEndY),
- this.width_, Math.abs(startY - prevEndY));
+ ctx.clearRect(this.layout_.plotArea.x, Math.min(startY, prevEndY),
+ this.layout_.plotArea.w, Math.abs(startY - prevEndY));
}
// Draw a light-grey rectangle to show the new viewing area
if (direction == Dygraph.HORIZONTAL) {
if (endX && startX) {
ctx.fillStyle = "rgba(128,128,128,0.33)";
- ctx.fillRect(Math.min(startX, endX), 0,
- Math.abs(endX - startX), this.height_);
+ ctx.fillRect(Math.min(startX, endX), this.layout_.plotArea.y,
+ Math.abs(endX - startX), this.layout_.plotArea.h);
}
- }
- if (direction == Dygraph.VERTICAL) {
+ } else if (direction == Dygraph.VERTICAL) {
if (endY && startY) {
ctx.fillStyle = "rgba(128,128,128,0.33)";
- ctx.fillRect(0, Math.min(startY, endY),
- this.width_, Math.abs(endY - startY));
+ ctx.fillRect(this.layout_.plotArea.x, Math.min(startY, endY),
+ this.layout_.plotArea.w, Math.abs(endY - startY));
}
}
+
+ if (this.isUsingExcanvas_) {
+ this.currentZoomRectArgs_ = [direction, startX, endX, startY, endY, 0, 0, 0];
+ }
+};
+
+/**
+ * Clear the zoom rectangle (and perform no zoom).
+ * @private
+ */
+Dygraph.prototype.clearZoomRect_ = function() {
+ this.currentZoomRectArgs_ = null;
+ this.canvas_ctx_.clearRect(0, 0, this.canvas_.width, this.canvas_.height);
};
/**
* @private
*/
Dygraph.prototype.doZoomX_ = function(lowX, highX) {
+ this.currentZoomRectArgs_ = null;
// Find the earliest and latest dates contained in this canvasx range.
// Convert the call to date ranges of the raw data.
var minDate = this.toDataXCoord(lowX);
* @private
*/
Dygraph.prototype.doZoomY_ = function(lowY, highY) {
+ this.currentZoomRectArgs_ = null;
// Find the highest and lowest values in pixel range for each axis.
// Note that lowY (in pixels) corresponds to the max Value (in data coords).
// This is because pixels increase as you go down on the screen, whereas data
/**
* @private
- * @param { Number } x The number to consider.
- * @return { Boolean } Whether the number is zero or NaN.
- */
-// TODO(danvk): rename this function to something like 'isNonZeroNan'.
-Dygraph.isOK = function(x) {
- return x && !isNaN(x);
-};
-
-/**
- * @private
* Generates HTML for the legend which is displayed when hovering over the
* chart. If no selected points are specified, a default legend is returned
* (this may just be the empty string).
return html;
}
- var html = this.attr_('xValueFormatter')(x) + ":";
+ var xOptView = this.optionsViewForAxis_('x');
+ var xvf = xOptView('valueFormatter');
+ var html = xvf(x, xOptView, this.attr_('labels')[0], this) + ":";
- var fmtFunc = this.attr_('yValueFormatter');
+ var yOptViews = [];
+ var num_axes = this.numAxes();
+ for (var i = 0; i < num_axes; i++) {
+ yOptViews[i] = this.optionsViewForAxis_('y' + (i ? 1 + i : ''));
+ }
var showZeros = this.attr_("labelsShowZeroValues");
var sepLines = this.attr_("labelsSeparateLines");
for (var i = 0; i < this.selPoints_.length; i++) {
if (!Dygraph.isOK(pt.canvasy)) continue;
if (sepLines) html += "<br/>";
+ var yOptView = yOptViews[this.seriesToAxisMap_[pt.name]];
+ var fmtFunc = yOptView('valueFormatter');
var c = this.plotter_.colors[pt.name];
- var yval = fmtFunc(pt.yval, this);
+ var yval = fmtFunc(pt.yval, yOptView, pt.name, this);
+
// TODO(danvk): use a template string here and make it an attribute.
html += " <b><span style='color: " + c + ";'>"
+ pt.name + "</span></b>:"
2 * maxCircleSize + 2, this.height_);
}
+ if (this.isUsingExcanvas_ && this.currentZoomRectArgs_) {
+ Dygraph.prototype.drawZoomRect_.apply(this, this.currentZoomRectArgs_);
+ }
+
if (this.selPoints_.length > 0) {
// Set the status message to indicate the selected point(s)
if (this.attr_('showLabelsOnHighlight')) {
for (var i in this.layout_.datasets) {
if (row < this.layout_.datasets[i].length) {
var point = this.layout_.points[pos+row];
-
+
if (this.attr_("stackedGraph")) {
point = this.layout_.unstackPointAtIndex(pos+row);
}
-
+
this.selPoints_.push(point);
}
pos += this.layout_.datasets[i].length;
};
/**
- * Number formatting function which mimicks the behavior of %g in printf, i.e.
- * either exponential or fixed format (without trailing 0s) is used depending on
- * the length of the generated string. The advantage of this format is that
- * there is a predictable upper bound on the resulting string length,
- * significant figures are not dropped, and normal numbers are not displayed in
- * exponential notation.
- *
- * NOTE: JavaScript's native toPrecision() is NOT a drop-in replacement for %g.
- * It creates strings which are too long for absolute values between 10^-4 and
- * 10^-6, e.g. '0.00001' instead of '1e-5'. See tests/number-format.html for
- * output examples.
- *
- * @param {Number} x The number to format
- * @param {Number} opt_precision The precision to use, default 2.
- * @return {String} A string formatted like %g in printf. The max generated
- * string length should be precision + 6 (e.g 1.123e+300).
- */
-Dygraph.floatFormat = function(x, opt_precision) {
- // Avoid invalid precision values; [1, 21] is the valid range.
- var p = Math.min(Math.max(1, opt_precision || 2), 21);
-
- // This is deceptively simple. The actual algorithm comes from:
- //
- // Max allowed length = p + 4
- // where 4 comes from 'e+n' and '.'.
- //
- // Length of fixed format = 2 + y + p
- // where 2 comes from '0.' and y = # of leading zeroes.
- //
- // Equating the two and solving for y yields y = 2, or 0.00xxxx which is
- // 1.0e-3.
- //
- // Since the behavior of toPrecision() is identical for larger numbers, we
- // don't have to worry about the other bound.
- //
- // Finally, the argument for toExponential() is the number of trailing digits,
- // so we take off 1 for the value before the '.'.
- return (Math.abs(x) < 1.0e-3 && x != 0.0) ?
- x.toExponential(p - 1) : x.toPrecision(p);
-};
-
-/**
- * @private
- * Return a string version of a number. This respects the digitsAfterDecimal
- * and maxNumberWidth options.
- * @param {Number} x The number to be formatted
- * @param {Dygraph} g The dygraph object
- */
-Dygraph.numberFormatter = function(x, g) {
- var sigFigs = g.attr_('sigFigs');
-
- if (sigFigs !== null) {
- // User has opted for a fixed number of significant figures.
- return Dygraph.floatFormat(x, sigFigs);
- }
-
- var digits = g.attr_('digitsAfterDecimal');
- var maxNumberWidth = g.attr_('maxNumberWidth');
-
- // switch to scientific notation if we underflow or overflow fixed display.
- if (x !== 0.0 &&
- (Math.abs(x) >= Math.pow(10, maxNumberWidth) ||
- Math.abs(x) < Math.pow(10, -digits))) {
- return x.toExponential(digits);
- } else {
- return '' + Dygraph.round_(x, digits);
- }
-};
-
-/**
- * @private
- * Converts '9' to '09' (useful for dates)
- */
-Dygraph.zeropad = function(x) {
- if (x < 10) return "0" + x; else return "" + x;
-};
-
-/**
- * Return a string version of the hours, minutes and seconds portion of a date.
- * @param {Number} date The JavaScript date (ms since epoch)
- * @return {String} A time of the form "HH:MM:SS"
- * @private
- */
-Dygraph.hmsString_ = function(date) {
- var zeropad = Dygraph.zeropad;
- var d = new Date(date);
- if (d.getSeconds()) {
- return zeropad(d.getHours()) + ":" +
- zeropad(d.getMinutes()) + ":" +
- zeropad(d.getSeconds());
- } else {
- return zeropad(d.getHours()) + ":" + zeropad(d.getMinutes());
- }
-};
-
-/**
- * Convert a JS date to a string appropriate to display on an axis that
- * is displaying values at the stated granularity.
- * @param {Date} date The date to format
- * @param {Number} granularity One of the Dygraph granularity constants
- * @return {String} The formatted date
- * @private
- */
-Dygraph.dateAxisFormatter = function(date, granularity) {
- if (granularity >= Dygraph.DECADAL) {
- return date.strftime('%Y');
- } else if (granularity >= Dygraph.MONTHLY) {
- return date.strftime('%b %y');
- } else {
- var frac = date.getHours() * 3600 + date.getMinutes() * 60 + date.getSeconds() + date.getMilliseconds();
- if (frac == 0 || granularity >= Dygraph.DAILY) {
- return new Date(date.getTime() + 3600*1000).strftime('%d%b');
- } else {
- return Dygraph.hmsString_(date.getTime());
- }
- }
-};
-
-/**
- * Convert a JS date (millis since epoch) to YYYY/MM/DD
- * @param {Number} date The JavaScript date (ms since epoch)
- * @return {String} A date of the form "YYYY/MM/DD"
- * @private
- */
-Dygraph.dateString_ = function(date) {
- var zeropad = Dygraph.zeropad;
- var d = new Date(date);
-
- // Get the year:
- var year = "" + d.getFullYear();
- // Get a 0 padded month string
- var month = zeropad(d.getMonth() + 1); //months are 0-offset, sigh
- // Get a 0 padded day string
- var day = zeropad(d.getDate());
-
- var ret = "";
- var frac = d.getHours() * 3600 + d.getMinutes() * 60 + d.getSeconds();
- if (frac) ret = " " + Dygraph.hmsString_(date);
-
- return year + "/" + month + "/" + day + ret;
-};
-
-/**
- * Round a number to the specified number of digits past the decimal point.
- * @param {Number} num The number to round
- * @param {Number} places The number of decimals to which to round
- * @return {Number} The rounded number
- * @private
- */
-Dygraph.round_ = function(num, places) {
- var shift = Math.pow(10, places);
- return Math.round(num * shift)/shift;
-};
-
-/**
* Fires when there's data available to be graphed.
- * @param {String} data Raw CSV data to be plotted
- * @private
- */
-Dygraph.prototype.loadedEvent_ = function(data) {
- this.rawData_ = this.parseCSV_(data);
- this.predraw_();
-};
-
-Dygraph.prototype.months = ["Jan", "Feb", "Mar", "Apr", "May", "Jun",
- "Jul", "Aug", "Sep", "Oct", "Nov", "Dec"];
-Dygraph.prototype.quarters = ["Jan", "Apr", "Jul", "Oct"];
-
-/**
- * Add ticks on the x-axis representing years, months, quarters, weeks, or days
- * @private
- */
-Dygraph.prototype.addXTicks_ = function() {
- // Determine the correct ticks scale on the x-axis: quarterly, monthly, ...
- var range;
- if (this.dateWindow_) {
- range = [this.dateWindow_[0], this.dateWindow_[1]];
- } else {
- range = [this.rawData_[0][0], this.rawData_[this.rawData_.length - 1][0]];
- }
-
- var xTicks = this.attr_('xTicker')(range[0], range[1], this);
- this.layout_.setXTicks(xTicks);
-};
-
-// Time granularity enumeration
-Dygraph.SECONDLY = 0;
-Dygraph.TWO_SECONDLY = 1;
-Dygraph.FIVE_SECONDLY = 2;
-Dygraph.TEN_SECONDLY = 3;
-Dygraph.THIRTY_SECONDLY = 4;
-Dygraph.MINUTELY = 5;
-Dygraph.TWO_MINUTELY = 6;
-Dygraph.FIVE_MINUTELY = 7;
-Dygraph.TEN_MINUTELY = 8;
-Dygraph.THIRTY_MINUTELY = 9;
-Dygraph.HOURLY = 10;
-Dygraph.TWO_HOURLY = 11;
-Dygraph.SIX_HOURLY = 12;
-Dygraph.DAILY = 13;
-Dygraph.WEEKLY = 14;
-Dygraph.MONTHLY = 15;
-Dygraph.QUARTERLY = 16;
-Dygraph.BIANNUAL = 17;
-Dygraph.ANNUAL = 18;
-Dygraph.DECADAL = 19;
-Dygraph.CENTENNIAL = 20;
-Dygraph.NUM_GRANULARITIES = 21;
-
-Dygraph.SHORT_SPACINGS = [];
-Dygraph.SHORT_SPACINGS[Dygraph.SECONDLY] = 1000 * 1;
-Dygraph.SHORT_SPACINGS[Dygraph.TWO_SECONDLY] = 1000 * 2;
-Dygraph.SHORT_SPACINGS[Dygraph.FIVE_SECONDLY] = 1000 * 5;
-Dygraph.SHORT_SPACINGS[Dygraph.TEN_SECONDLY] = 1000 * 10;
-Dygraph.SHORT_SPACINGS[Dygraph.THIRTY_SECONDLY] = 1000 * 30;
-Dygraph.SHORT_SPACINGS[Dygraph.MINUTELY] = 1000 * 60;
-Dygraph.SHORT_SPACINGS[Dygraph.TWO_MINUTELY] = 1000 * 60 * 2;
-Dygraph.SHORT_SPACINGS[Dygraph.FIVE_MINUTELY] = 1000 * 60 * 5;
-Dygraph.SHORT_SPACINGS[Dygraph.TEN_MINUTELY] = 1000 * 60 * 10;
-Dygraph.SHORT_SPACINGS[Dygraph.THIRTY_MINUTELY] = 1000 * 60 * 30;
-Dygraph.SHORT_SPACINGS[Dygraph.HOURLY] = 1000 * 3600;
-Dygraph.SHORT_SPACINGS[Dygraph.TWO_HOURLY] = 1000 * 3600 * 2;
-Dygraph.SHORT_SPACINGS[Dygraph.SIX_HOURLY] = 1000 * 3600 * 6;
-Dygraph.SHORT_SPACINGS[Dygraph.DAILY] = 1000 * 86400;
-Dygraph.SHORT_SPACINGS[Dygraph.WEEKLY] = 1000 * 604800;
-
-/**
- * @private
- * If we used this time granularity, how many ticks would there be?
- * This is only an approximation, but it's generally good enough.
- */
-Dygraph.prototype.NumXTicks = function(start_time, end_time, granularity) {
- if (granularity < Dygraph.MONTHLY) {
- // Generate one tick mark for every fixed interval of time.
- var spacing = Dygraph.SHORT_SPACINGS[granularity];
- return Math.floor(0.5 + 1.0 * (end_time - start_time) / spacing);
- } else {
- var year_mod = 1; // e.g. to only print one point every 10 years.
- var num_months = 12;
- if (granularity == Dygraph.QUARTERLY) num_months = 3;
- if (granularity == Dygraph.BIANNUAL) num_months = 2;
- if (granularity == Dygraph.ANNUAL) num_months = 1;
- if (granularity == Dygraph.DECADAL) { num_months = 1; year_mod = 10; }
- if (granularity == Dygraph.CENTENNIAL) { num_months = 1; year_mod = 100; }
-
- var msInYear = 365.2524 * 24 * 3600 * 1000;
- var num_years = 1.0 * (end_time - start_time) / msInYear;
- return Math.floor(0.5 + 1.0 * num_years * num_months / year_mod);
- }
-};
-
-/**
- * @private
- *
- * Construct an x-axis of nicely-formatted times on meaningful boundaries
- * (e.g. 'Jan 09' rather than 'Jan 22, 2009').
- *
- * Returns an array containing {v: millis, label: label} dictionaries.
- */
-Dygraph.prototype.GetXAxis = function(start_time, end_time, granularity) {
- var formatter = this.attr_("xAxisLabelFormatter");
- var ticks = [];
- if (granularity < Dygraph.MONTHLY) {
- // Generate one tick mark for every fixed interval of time.
- var spacing = Dygraph.SHORT_SPACINGS[granularity];
- var format = '%d%b'; // e.g. "1Jan"
-
- // Find a time less than start_time which occurs on a "nice" time boundary
- // for this granularity.
- var g = spacing / 1000;
- var d = new Date(start_time);
- if (g <= 60) { // seconds
- var x = d.getSeconds(); d.setSeconds(x - x % g);
- } else {
- d.setSeconds(0);
- g /= 60;
- if (g <= 60) { // minutes
- var x = d.getMinutes(); d.setMinutes(x - x % g);
- } else {
- d.setMinutes(0);
- g /= 60;
-
- if (g <= 24) { // days
- var x = d.getHours(); d.setHours(x - x % g);
- } else {
- d.setHours(0);
- g /= 24;
-
- if (g == 7) { // one week
- d.setDate(d.getDate() - d.getDay());
- }
- }
- }
- }
- start_time = d.getTime();
-
- for (var t = start_time; t <= end_time; t += spacing) {
- ticks.push({ v:t, label: formatter(new Date(t), granularity) });
- }
- } else {
- // Display a tick mark on the first of a set of months of each year.
- // Years get a tick mark iff y % year_mod == 0. This is useful for
- // displaying a tick mark once every 10 years, say, on long time scales.
- var months;
- var year_mod = 1; // e.g. to only print one point every 10 years.
-
- if (granularity == Dygraph.MONTHLY) {
- months = [ 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12 ];
- } else if (granularity == Dygraph.QUARTERLY) {
- months = [ 0, 3, 6, 9 ];
- } else if (granularity == Dygraph.BIANNUAL) {
- months = [ 0, 6 ];
- } else if (granularity == Dygraph.ANNUAL) {
- months = [ 0 ];
- } else if (granularity == Dygraph.DECADAL) {
- months = [ 0 ];
- year_mod = 10;
- } else if (granularity == Dygraph.CENTENNIAL) {
- months = [ 0 ];
- year_mod = 100;
- } else {
- this.warn("Span of dates is too long");
- }
-
- var start_year = new Date(start_time).getFullYear();
- var end_year = new Date(end_time).getFullYear();
- var zeropad = Dygraph.zeropad;
- for (var i = start_year; i <= end_year; i++) {
- if (i % year_mod != 0) continue;
- for (var j = 0; j < months.length; j++) {
- var date_str = i + "/" + zeropad(1 + months[j]) + "/01";
- var t = Dygraph.dateStrToMillis(date_str);
- if (t < start_time || t > end_time) continue;
- ticks.push({ v:t, label: formatter(new Date(t), granularity) });
- }
- }
- }
-
- return ticks;
-};
-
-
-/**
- * Add ticks to the x-axis based on a date range.
- * @param {Number} startDate Start of the date window (millis since epoch)
- * @param {Number} endDate End of the date window (millis since epoch)
- * @param {Dygraph} self The dygraph object
- * @return { [Object] } Array of {label, value} tuples.
- * @public
- */
-Dygraph.dateTicker = function(startDate, endDate, self) {
- // TODO(danvk): why does this take 'self' as a param?
- var chosen = -1;
- for (var i = 0; i < Dygraph.NUM_GRANULARITIES; i++) {
- var num_ticks = self.NumXTicks(startDate, endDate, i);
- if (self.width_ / num_ticks >= self.attr_('pixelsPerXLabel')) {
- chosen = i;
- break;
- }
- }
-
- if (chosen >= 0) {
- return self.GetXAxis(startDate, endDate, chosen);
- } else {
- // TODO(danvk): signal error.
- }
-};
-
-/**
- * @private
- * This is a list of human-friendly values at which to show tick marks on a log
- * scale. It is k * 10^n, where k=1..9 and n=-39..+39, so:
- * ..., 1, 2, 3, 4, 5, ..., 9, 10, 20, 30, ..., 90, 100, 200, 300, ...
- * NOTE: this assumes that Dygraph.LOG_SCALE = 10.
- */
-Dygraph.PREFERRED_LOG_TICK_VALUES = function() {
- var vals = [];
- for (var power = -39; power <= 39; power++) {
- var range = Math.pow(10, power);
- for (var mult = 1; mult <= 9; mult++) {
- var val = range * mult;
- vals.push(val);
- }
- }
- return vals;
-}();
-
-/**
- * @private
- * Implementation of binary search over an array.
- * Currently does not work when val is outside the range of arry's values.
- * @param { Integer } val the value to search for
- * @param { Integer[] } arry is the value over which to search
- * @param { Integer } abs If abs > 0, find the lowest entry greater than val
- * If abs < 0, find the highest entry less than val.
- * if abs == 0, find the entry that equals val.
- * @param { Integer } [low] The first index in arry to consider (optional)
- * @param { Integer } [high] The last index in arry to consider (optional)
- */
-Dygraph.binarySearch = function(val, arry, abs, low, high) {
- if (low == null || high == null) {
- low = 0;
- high = arry.length - 1;
- }
- if (low > high) {
- return -1;
- }
- if (abs == null) {
- abs = 0;
- }
- var validIndex = function(idx) {
- return idx >= 0 && idx < arry.length;
- }
- var mid = parseInt((low + high) / 2);
- var element = arry[mid];
- if (element == val) {
- return mid;
- }
- if (element > val) {
- if (abs > 0) {
- // Accept if element > val, but also if prior element < val.
- var idx = mid - 1;
- if (validIndex(idx) && arry[idx] < val) {
- return mid;
- }
- }
- return Dygraph.binarySearch(val, arry, abs, low, mid - 1);
- }
- if (element < val) {
- if (abs < 0) {
- // Accept if element < val, but also if prior element > val.
- var idx = mid + 1;
- if (validIndex(idx) && arry[idx] > val) {
- return mid;
- }
- }
- return Dygraph.binarySearch(val, arry, abs, mid + 1, high);
- }
-};
-
-// TODO(konigsberg): Update comment.
-/**
- * Add ticks when the x axis has numbers on it (instead of dates)
- *
- * @param {Number} minV minimum value
- * @param {Number} maxV maximum value
- * @param self
- * @param {function} attribute accessor function.
- * @return {[Object]} Array of {label, value} tuples.
- */
-Dygraph.numericTicks = function(minV, maxV, self, axis_props, vals) {
- var attr = function(k) {
- if (axis_props && axis_props.hasOwnProperty(k)) return axis_props[k];
- return self.attr_(k);
- };
-
- var ticks = [];
- if (vals) {
- for (var i = 0; i < vals.length; i++) {
- ticks.push({v: vals[i]});
- }
- } else {
- if (axis_props && attr("logscale")) {
- var pixelsPerTick = attr('pixelsPerYLabel');
- // NOTE(konigsberg): Dan, should self.height_ be self.plotter_.area.h?
- var nTicks = Math.floor(self.height_ / pixelsPerTick);
- var minIdx = Dygraph.binarySearch(minV, Dygraph.PREFERRED_LOG_TICK_VALUES, 1);
- var maxIdx = Dygraph.binarySearch(maxV, Dygraph.PREFERRED_LOG_TICK_VALUES, -1);
- if (minIdx == -1) {
- minIdx = 0;
- }
- if (maxIdx == -1) {
- maxIdx = Dygraph.PREFERRED_LOG_TICK_VALUES.length - 1;
- }
- // Count the number of tick values would appear, if we can get at least
- // nTicks / 4 accept them.
- var lastDisplayed = null;
- if (maxIdx - minIdx >= nTicks / 4) {
- var axisId = axis_props.yAxisId;
- for (var idx = maxIdx; idx >= minIdx; idx--) {
- var tickValue = Dygraph.PREFERRED_LOG_TICK_VALUES[idx];
- var domCoord = axis_props.g.toDomYCoord(tickValue, axisId);
- var tick = { v: tickValue };
- if (lastDisplayed == null) {
- lastDisplayed = {
- tickValue : tickValue,
- domCoord : domCoord
- };
- } else {
- if (domCoord - lastDisplayed.domCoord >= pixelsPerTick) {
- lastDisplayed = {
- tickValue : tickValue,
- domCoord : domCoord
- };
- } else {
- tick.label = "";
- }
- }
- ticks.push(tick);
- }
- // Since we went in backwards order.
- ticks.reverse();
- }
- }
-
- // ticks.length won't be 0 if the log scale function finds values to insert.
- if (ticks.length == 0) {
- // Basic idea:
- // Try labels every 1, 2, 5, 10, 20, 50, 100, etc.
- // Calculate the resulting tick spacing (i.e. this.height_ / nTicks).
- // The first spacing greater than pixelsPerYLabel is what we use.
- // TODO(danvk): version that works on a log scale.
- if (attr("labelsKMG2")) {
- var mults = [1, 2, 4, 8];
- } else {
- var mults = [1, 2, 5];
- }
- var scale, low_val, high_val, nTicks;
- // TODO(danvk): make it possible to set this for x- and y-axes independently.
- var pixelsPerTick = attr('pixelsPerYLabel');
- for (var i = -10; i < 50; i++) {
- if (attr("labelsKMG2")) {
- var base_scale = Math.pow(16, i);
- } else {
- var base_scale = Math.pow(10, i);
- }
- for (var j = 0; j < mults.length; j++) {
- scale = base_scale * mults[j];
- low_val = Math.floor(minV / scale) * scale;
- high_val = Math.ceil(maxV / scale) * scale;
- nTicks = Math.abs(high_val - low_val) / scale;
- var spacing = self.height_ / nTicks;
- // wish I could break out of both loops at once...
- if (spacing > pixelsPerTick) break;
- }
- if (spacing > pixelsPerTick) break;
- }
-
- // Construct the set of ticks.
- // Allow reverse y-axis if it's explicitly requested.
- if (low_val > high_val) scale *= -1;
- for (var i = 0; i < nTicks; i++) {
- var tickV = low_val + i * scale;
- ticks.push( {v: tickV} );
- }
- }
- }
+ * @param {String} data Raw CSV data to be plotted
+ * @private
+ */
+Dygraph.prototype.loadedEvent_ = function(data) {
+ this.rawData_ = this.parseCSV_(data);
+ this.predraw_();
+};
- // Add formatted labels to the ticks.
- var k;
- var k_labels = [];
- if (attr("labelsKMB")) {
- k = 1000;
- k_labels = [ "K", "M", "B", "T" ];
- }
- if (attr("labelsKMG2")) {
- if (k) self.warn("Setting both labelsKMB and labelsKMG2. Pick one!");
- k = 1024;
- k_labels = [ "k", "M", "G", "T" ];
- }
- var formatter = attr('yAxisLabelFormatter') ?
- attr('yAxisLabelFormatter') : attr('yValueFormatter');
-
- // Add labels to the ticks.
- for (var i = 0; i < ticks.length; i++) {
- if (ticks[i].label !== undefined) continue; // Use current label.
- var tickV = ticks[i].v;
- var absTickV = Math.abs(tickV);
- var label = formatter(tickV, self);
- if (k_labels.length > 0) {
- // Round up to an appropriate unit.
- var n = k*k*k*k;
- for (var j = 3; j >= 0; j--, n /= k) {
- if (absTickV >= n) {
- label = Dygraph.round_(tickV / n, attr('digitsAfterDecimal')) + k_labels[j];
- break;
- }
- }
- }
- ticks[i].label = label;
+/**
+ * Add ticks on the x-axis representing years, months, quarters, weeks, or days
+ * @private
+ */
+Dygraph.prototype.addXTicks_ = function() {
+ // Determine the correct ticks scale on the x-axis: quarterly, monthly, ...
+ var range;
+ if (this.dateWindow_) {
+ range = [this.dateWindow_[0], this.dateWindow_[1]];
+ } else {
+ range = [this.rawData_[0][0], this.rawData_[this.rawData_.length - 1][0]];
}
- return ticks;
+ var xAxisOptionsView = this.optionsViewForAxis_('x');
+ var xTicks = xAxisOptionsView('ticker')(
+ range[0],
+ range[1],
+ this.width_, // TODO(danvk): should be area.width
+ xAxisOptionsView,
+ this);
+ // var msg = 'ticker(' + range[0] + ', ' + range[1] + ', ' + this.width_ + ', ' + this.attr_('pixelsPerXLabel') + ') -> ' + JSON.stringify(xTicks);
+ // console.log(msg);
+ this.layout_.setXTicks(xTicks);
};
/**
* number of axes, rolling averages, etc.
*/
Dygraph.prototype.predraw_ = function() {
+ var start = new Date();
+
// TODO(danvk): move more computations out of drawGraph_ and into here.
this.computeYAxes_();
// edge of the div, if we have two y-axes.
this.positionLabelsDiv_();
+ if (this.rangeSelector_) {
+ this.rangeSelector_.renderStaticLayer();
+ }
+
// If the data or options have changed, then we'd better redraw.
this.drawGraph_();
+
+ // This is used to determine whether to do various animations.
+ var end = new Date();
+ this.drawingTimeMs_ = (end - start);
};
/**
* Update the graph with new data. This method is called when the viewing area
* has changed. If the underlying data or options have changed, predraw_ will
* be called before drawGraph_ is called.
+ *
+ * clearSelection, when undefined or true, causes this.clearSelection to be
+ * called at the end of the draw operation. This should rarely be defined,
+ * and never true (that is it should be undefined most of the time, and
+ * rarely false.)
+ *
* @private
*/
-Dygraph.prototype.drawGraph_ = function() {
+Dygraph.prototype.drawGraph_ = function(clearSelection) {
+ var start = new Date();
+
+ if (typeof(clearSelection) === 'undefined') {
+ clearSelection = true;
+ }
+
var data = this.rawData_;
// This is used to set the second parameter to drawCallback, below.
this.layout_.setDateWindow(this.dateWindow_);
this.zoomed_x_ = tmp_zoomed_x;
this.layout_.evaluateWithError();
+ this.renderGraph_(is_initial_draw, false);
+
+ if (this.attr_("timingName")) {
+ var end = new Date();
+ if (console) {
+ console.log(this.attr_("timingName") + " - drawGraph: " + (end - start) + "ms")
+ }
+ }
+};
+
+Dygraph.prototype.renderGraph_ = function(is_initial_draw, clearSelection) {
this.plotter_.clear();
this.plotter_.render();
this.canvas_.getContext('2d').clearRect(0, 0, this.canvas_.width,
// Generate a static legend before any particular point is selected.
this.setLegendHTML_();
} else {
- if (typeof(this.selPoints_) !== 'undefined' && this.selPoints_.length) {
- // We should select the point nearest the page x/y here, but it's easier
- // to just clear the selection. This prevents erroneous hover dots from
- // being displayed.
- this.clearSelection();
- } else {
- this.clearSelection();
+ if (clearSelection) {
+ if (typeof(this.selPoints_) !== 'undefined' && this.selPoints_.length) {
+ // We should select the point nearest the page x/y here, but it's easier
+ // to just clear the selection. This prevents erroneous hover dots from
+ // being displayed.
+ this.clearSelection();
+ } else {
+ this.clearSelection();
+ }
}
}
+ if (this.rangeSelector_) {
+ this.rangeSelector_.renderInteractiveLayer();
+ }
+
if (this.attr_("drawCallback") !== null) {
this.attr_("drawCallback")(this, is_initial_draw);
}
* indices are into the axes_ array.
*/
Dygraph.prototype.computeYAxes_ = function() {
+ // Preserve valueWindow settings if they exist, and if the user hasn't
+ // specified a new valueRange.
+ var valueWindows;
+ if (this.axes_ != undefined && this.user_attrs_.hasOwnProperty("valueRange") == false) {
+ valueWindows = [];
+ for (var index = 0; index < this.axes_.length; index++) {
+ valueWindows.push(this.axes_[index].valueWindow);
+ }
+ }
+
this.axes_ = [{ yAxisId : 0, g : this }]; // always have at least one y-axis.
this.seriesToAxisMap_ = {};
if (vis[i - 1]) seriesToAxisFiltered[s] = this.seriesToAxisMap_[s];
}
this.seriesToAxisMap_ = seriesToAxisFiltered;
+
+ if (valueWindows != undefined) {
+ // Restore valueWindow settings.
+ for (var index = 0; index < valueWindows.length; index++) {
+ this.axes_[index].valueWindow = valueWindows[index];
+ }
+ }
};
/**
// Compute extreme values, a span and tick marks for each axis.
for (var i = 0; i < this.axes_.length; i++) {
var axis = this.axes_[i];
-
+
if (!seriesForAxis[i]) {
// If no series are defined or visible then use a reasonable default
axis.extremeRange = [0, 1];
// Add ticks. By default, all axes inherit the tick positions of the
// primary axis. However, if an axis is specifically marked as having
// independent ticks, then that is permissible as well.
+ var opts = this.optionsViewForAxis_('y' + (i ? '2' : ''));
+ var ticker = opts('ticker');
if (i == 0 || axis.independentTicks) {
- axis.ticks =
- Dygraph.numericTicks(axis.computedValueRange[0],
- axis.computedValueRange[1],
- this,
- axis);
+ axis.ticks = ticker(axis.computedValueRange[0],
+ axis.computedValueRange[1],
+ this.height_, // TODO(danvk): should be area.height
+ opts,
+ this);
} else {
var p_axis = this.axes_[0];
var p_ticks = p_axis.ticks;
var p_scale = p_axis.computedValueRange[1] - p_axis.computedValueRange[0];
var scale = axis.computedValueRange[1] - axis.computedValueRange[0];
var tick_values = [];
- for (var i = 0; i < p_ticks.length; i++) {
- var y_frac = (p_ticks[i].v - p_axis.computedValueRange[0]) / p_scale;
+ for (var k = 0; k < p_ticks.length; k++) {
+ var y_frac = (p_ticks[k].v - p_axis.computedValueRange[0]) / p_scale;
var y_val = axis.computedValueRange[0] + y_frac * scale;
tick_values.push(y_val);
}
- axis.ticks =
- Dygraph.numericTicks(axis.computedValueRange[0],
- axis.computedValueRange[1],
- this, axis, tick_values);
+ axis.ticks = ticker(axis.computedValueRange[0],
+ axis.computedValueRange[1],
+ this.height_, // TODO(danvk): should be area.height
+ opts,
+ this,
+ tick_values);
}
}
};
-
+
/**
* @private
* Calculates the rolling average of a data set.
Dygraph.prototype.rollingAverage = function(originalData, rollPeriod) {
if (originalData.length < 2)
return originalData;
- var rollPeriod = Math.min(rollPeriod, originalData.length - 1);
+ var rollPeriod = Math.min(rollPeriod, originalData.length);
var rollingData = [];
var sigma = this.attr_("sigma");
count -= 1;
}
}
- rollingData[i] = [originalData[i][0], [ 1.0 * mid / count,
- 1.0 * (mid - low) / count,
- 1.0 * (high - mid) / count ]];
+ if (count) {
+ rollingData[i] = [originalData[i][0], [ 1.0 * mid / count,
+ 1.0 * (mid - low) / count,
+ 1.0 * (high - mid) / count ]];
+ } else {
+ rollingData[i] = [originalData[i][0], [null, null, null]];
+ }
}
} else {
// Calculate the rolling average for the first rollPeriod - 1 points where
};
/**
- * @private
- * Parses a date, returning the number of milliseconds since epoch. This can be
- * passed in as an xValueParser in the Dygraph constructor.
- * TODO(danvk): enumerate formats that this understands.
- * @param {String} A date in YYYYMMDD format.
- * @return {Number} Milliseconds since epoch.
- */
-Dygraph.dateParser = function(dateStr, self) {
- var dateStrSlashed;
- var d;
- if (dateStr.search("-") != -1) { // e.g. '2009-7-12' or '2009-07-12'
- dateStrSlashed = dateStr.replace("-", "/", "g");
- while (dateStrSlashed.search("-") != -1) {
- dateStrSlashed = dateStrSlashed.replace("-", "/");
- }
- d = Dygraph.dateStrToMillis(dateStrSlashed);
- } else if (dateStr.length == 8) { // e.g. '20090712'
- // TODO(danvk): remove support for this format. It's confusing.
- dateStrSlashed = dateStr.substr(0,4) + "/" + dateStr.substr(4,2)
- + "/" + dateStr.substr(6,2);
- d = Dygraph.dateStrToMillis(dateStrSlashed);
- } else {
- // Any format that Date.parse will accept, e.g. "2009/07/12" or
- // "2009/07/12 12:34:56"
- d = Dygraph.dateStrToMillis(dateStr);
- }
-
- if (!d || isNaN(d)) {
- self.error("Couldn't parse " + dateStr + " as a date");
- }
- return d;
-};
-
-/**
* Detects the type of the str (date or numeric) and sets the various
* formatting attributes in this.attrs_ based on this type.
* @param {String} str An x value.
}
if (isDate) {
- this.attrs_.xValueFormatter = Dygraph.dateString_;
this.attrs_.xValueParser = Dygraph.dateParser;
- this.attrs_.xTicker = Dygraph.dateTicker;
- this.attrs_.xAxisLabelFormatter = Dygraph.dateAxisFormatter;
+ this.attrs_.axes.x.valueFormatter = Dygraph.dateString_;
+ this.attrs_.axes.x.ticker = Dygraph.dateTicker;
+ this.attrs_.axes.x.axisLabelFormatter = Dygraph.dateAxisFormatter;
} else {
- // TODO(danvk): use Dygraph.numberFormatter here?
- /** @private (shut up, jsdoc!) */
- this.attrs_.xValueFormatter = function(x) { return x; };
/** @private (shut up, jsdoc!) */
this.attrs_.xValueParser = function(x) { return parseFloat(x); };
- this.attrs_.xTicker = Dygraph.numericTicks;
- this.attrs_.xAxisLabelFormatter = this.attrs_.xValueFormatter;
+ // TODO(danvk): use Dygraph.numberValueFormatter here?
+ /** @private (shut up, jsdoc!) */
+ this.attrs_.axes.x.valueFormatter = function(x) { return x; };
+ this.attrs_.axes.x.ticker = Dygraph.numericTicks;
+ this.attrs_.axes.x.axisLabelFormatter = this.attrs_.axes.x.valueFormatter;
}
};
if (Dygraph.isDateLike(data[0][0])) {
// Some intelligent defaults for a date x-axis.
- this.attrs_.xValueFormatter = Dygraph.dateString_;
- this.attrs_.xAxisLabelFormatter = Dygraph.dateAxisFormatter;
- this.attrs_.xTicker = Dygraph.dateTicker;
+ this.attrs_.axes.x.valueFormatter = Dygraph.dateString_;
+ this.attrs_.axes.x.axisLabelFormatter = Dygraph.dateAxisFormatter;
+ this.attrs_.axes.x.ticker = Dygraph.dateTicker;
// Assume they're all dates.
var parsedData = Dygraph.clone(data);
} else {
// Some intelligent defaults for a numeric x-axis.
/** @private (shut up, jsdoc!) */
- this.attrs_.xValueFormatter = function(x) { return x; };
- this.attrs_.xTicker = Dygraph.numericTicks;
+ this.attrs_.axes.x.valueFormatter = function(x) { return x; };
+ this.attrs_.axes.x.axisLabelFormatter = Dygraph.numberAxisLabelFormatter;
+ this.attrs_.axes.x.ticker = Dygraph.numericTicks;
return data;
}
};
var indepType = data.getColumnType(0);
if (indepType == 'date' || indepType == 'datetime') {
- this.attrs_.xValueFormatter = Dygraph.dateString_;
this.attrs_.xValueParser = Dygraph.dateParser;
- this.attrs_.xTicker = Dygraph.dateTicker;
- this.attrs_.xAxisLabelFormatter = Dygraph.dateAxisFormatter;
+ this.attrs_.axes.x.valueFormatter = Dygraph.dateString_;
+ this.attrs_.axes.x.ticker = Dygraph.dateTicker;
+ this.attrs_.axes.x.axisLabelFormatter = Dygraph.dateAxisFormatter;
} else if (indepType == 'number') {
- this.attrs_.xValueFormatter = function(x) { return x; };
this.attrs_.xValueParser = function(x) { return parseFloat(x); };
- this.attrs_.xTicker = Dygraph.numericTicks;
- this.attrs_.xAxisLabelFormatter = this.attrs_.xValueFormatter;
+ this.attrs_.axes.x.valueFormatter = function(x) { return x; };
+ this.attrs_.axes.x.ticker = Dygraph.numericTicks;
+ this.attrs_.axes.x.axisLabelFormatter = this.attrs_.axes.x.valueFormatter;
} else {
this.error("only 'date', 'datetime' and 'number' types are supported for " +
"column 1 of DataTable input (Got '" + indepType + "')");
}
/**
- * @private
- * This is identical to JavaScript's built-in Date.parse() method, except that
- * it doesn't get replaced with an incompatible method by aggressive JS
- * libraries like MooTools or Joomla.
- * @param { String } str The date string, e.g. "2011/05/06"
- * @return { Integer } millis since epoch
- */
-Dygraph.dateStrToMillis = function(str) {
- return new Date(str).getTime();
-};
-
-// These functions are all based on MochiKit.
-/**
- * @private
- */
-Dygraph.update = function (self, o) {
- if (typeof(o) != 'undefined' && o !== null) {
- for (var k in o) {
- if (o.hasOwnProperty(k)) {
- self[k] = o[k];
- }
- }
- }
- return self;
-};
-
-/**
- * @private
- */
-Dygraph.isArrayLike = function (o) {
- var typ = typeof(o);
- if (
- (typ != 'object' && !(typ == 'function' &&
- typeof(o.item) == 'function')) ||
- o === null ||
- typeof(o.length) != 'number' ||
- o.nodeType === 3
- ) {
- return false;
- }
- return true;
-};
-
-/**
- * @private
- */
-Dygraph.isDateLike = function (o) {
- if (typeof(o) != "object" || o === null ||
- typeof(o.getTime) != 'function') {
- return false;
- }
- return true;
-};
-
-/**
- * @private
- */
-Dygraph.clone = function(o) {
- // TODO(danvk): figure out how MochiKit's version works
- var r = [];
- for (var i = 0; i < o.length; i++) {
- if (Dygraph.isArrayLike(o[i])) {
- r.push(Dygraph.clone(o[i]));
- } else {
- r.push(o[i]);
- }
- }
- return r;
-};
-
-
-/**
* Get the CSV data. If it's in a function, call that function. If it's in a
* file, do an XMLHttpRequest to get it.
* @private
var caller = this;
req.onreadystatechange = function () {
if (req.readyState == 4) {
- if (req.status == 200) {
+ if (req.status == 200 || // Normal http
+ req.status == 0) { // Chrome w/ --allow-file-access-from-files
caller.loadedEvent_(req.responseText);
}
}
* avoiding the occasional infinite loop and preventing redraws when it's not
* necessary (e.g. when updating a callback).
*/
-Dygraph.prototype.updateOptions = function(attrs, block_redraw) {
+Dygraph.prototype.updateOptions = function(input_attrs, block_redraw) {
if (typeof(block_redraw) == 'undefined') block_redraw = false;
+ // mapLegacyOptions_ drops the "file" parameter as a convenience to us.
+ var file = input_attrs['file'];
+ var attrs = Dygraph.mapLegacyOptions_(input_attrs);
+
// TODO(danvk): this is a mess. Move these options into attr_.
if ('rollPeriod' in attrs) {
this.rollPeriod_ = attrs.rollPeriod;
// drawPoints
// highlightCircleSize
- Dygraph.update(this.user_attrs_, attrs);
+ // Check if this set options will require new points.
+ var requiresNewPoints = Dygraph.isPixelChangingOptionList(this.attr_("labels"), attrs);
+
+ Dygraph.updateDeep(this.user_attrs_, attrs);
- if (attrs['file']) {
- this.file_ = attrs['file'];
+ if (file) {
+ this.file_ = file;
if (!block_redraw) this.start_();
} else {
- if (!block_redraw) this.predraw_();
+ if (!block_redraw) {
+ if (requiresNewPoints) {
+ this.predraw_();
+ } else {
+ this.renderGraph_(false, false);
+ }
+ }
+ }
+};
+
+/**
+ * Returns a copy of the options with deprecated names converted into current
+ * names. Also drops the (potentially-large) 'file' attribute. If the caller is
+ * interested in that, they should save a copy before calling this.
+ * @private
+ */
+Dygraph.mapLegacyOptions_ = function(attrs) {
+ var my_attrs = {};
+ for (var k in attrs) {
+ if (k == 'file') continue;
+ if (attrs.hasOwnProperty(k)) my_attrs[k] = attrs[k];
}
+
+ var set = function(axis, opt, value) {
+ if (!my_attrs.axes) my_attrs.axes = {};
+ if (!my_attrs.axes[axis]) my_attrs.axes[axis] = {};
+ my_attrs.axes[axis][opt] = value;
+ };
+ var map = function(opt, axis, new_opt) {
+ if (typeof(attrs[opt]) != 'undefined') {
+ set(axis, new_opt, attrs[opt]);
+ delete my_attrs[opt];
+ }
+ };
+
+ // This maps, e.g., xValueFormater -> axes: { x: { valueFormatter: ... } }
+ map('xValueFormatter', 'x', 'valueFormatter');
+ map('pixelsPerXLabel', 'x', 'pixelsPerLabel');
+ map('xAxisLabelFormatter', 'x', 'axisLabelFormatter');
+ map('xTicker', 'x', 'ticker');
+ map('yValueFormatter', 'y', 'valueFormatter');
+ map('pixelsPerYLabel', 'y', 'pixelsPerLabel');
+ map('yAxisLabelFormatter', 'y', 'axisLabelFormatter');
+ map('yTicker', 'y', 'ticker');
+ return my_attrs;
};
/**
width = height = null;
}
- // TODO(danvk): there should be a clear() method.
- this.maindiv_.innerHTML = "";
- this.attrs_.labelsDiv = null;
+ var old_width = this.width_;
+ var old_height = this.height_;
if (width) {
this.maindiv_.style.width = width + "px";
this.width_ = width;
this.height_ = height;
} else {
- this.width_ = this.maindiv_.offsetWidth;
- this.height_ = this.maindiv_.offsetHeight;
+ this.width_ = this.maindiv_.clientWidth;
+ this.height_ = this.maindiv_.clientHeight;
}
- this.createInterface_();
- this.predraw_();
+ if (old_width != this.width_ || old_height != this.height_) {
+ // TODO(danvk): there should be a clear() method.
+ this.maindiv_.innerHTML = "";
+ this.roller_ = null;
+ this.attrs_.labelsDiv = null;
+ this.createInterface_();
+ if (this.annotations_.length) {
+ // createInterface_ reset the layout, so we need to do this.
+ this.layout_.setAnnotations(this.annotations_);
+ }
+ this.predraw_();
+ }
this.resize_lock = false;
};
};
/**
+ * How large of an area will the dygraph render itself in?
+ * This is used for testing.
+ * @return A {width: w, height: h} object.
+ * @private
+ */
+Dygraph.prototype.size = function() {
+ return { width: this.width_, height: this.height_ };
+};
+
+/**
* Update the list of annotations and redraw the chart.
*/
Dygraph.prototype.setAnnotations = function(ann, suppressDraw) {
this.warn("Unable to add default annotation CSS rule; display may be off.");
}
-/**
- * @private
- * Create a new canvas element. This is more complex than a simple
- * document.createElement("canvas") because of IE and excanvas.
- */
-Dygraph.createCanvas = function() {
- var canvas = document.createElement("canvas");
-
- isIE = (/MSIE/.test(navigator.userAgent) && !window.opera);
- if (isIE && (typeof(G_vmlCanvasManager) != 'undefined')) {
- canvas = G_vmlCanvasManager.initElement(canvas);
- }
-
- return canvas;
-};
-
-
-/**
- * A wrapper around Dygraph that implements the gviz API.
- * @param {Object} container The DOM object the visualization should live in.
- */
-Dygraph.GVizChart = function(container) {
- this.container = container;
-}
-
-Dygraph.GVizChart.prototype.draw = function(data, options) {
- // Clear out any existing dygraph.
- // TODO(danvk): would it make more sense to simply redraw using the current
- // date_graph object?
- this.container.innerHTML = '';
- if (typeof(this.date_graph) != 'undefined') {
- this.date_graph.destroy();
- }
-
- this.date_graph = new Dygraph(this.container, data, options);
-}
-
-/**
- * Google charts compatible setSelection
- * Only row selection is supported, all points in the row will be highlighted
- * @param {Array} array of the selected cells
- * @public
- */
-Dygraph.GVizChart.prototype.setSelection = function(selection_array) {
- var row = false;
- if (selection_array.length) {
- row = selection_array[0].row;
- }
- this.date_graph.setSelection(row);
-}
-
-/**
- * Google charts compatible getSelection implementation
- * @return {Array} array of the selected cells
- * @public
- */
-Dygraph.GVizChart.prototype.getSelection = function() {
- var selection = [];
-
- var row = this.date_graph.getSelection();
-
- if (row < 0) return selection;
-
- col = 1;
- for (var i in this.date_graph.layout_.datasets) {
- selection.push({row: row, column: col});
- col++;
- }
-
- return selection;
-}
-
// Older pages may still use this name.
DateGraph = Dygraph;
-
-// <REMOVE_FOR_COMBINED>
-Dygraph.OPTIONS_REFERENCE = // <JSON>
-{
- "xValueParser": {
- "default": "parseFloat() or Date.parse()*",
- "labels": ["CSV parsing"],
- "type": "function(str) -> number",
- "description": "A function which parses x-values (i.e. the dependent series). Must return a number, even when the values are dates. In this case, millis since epoch are used. This is used primarily for parsing CSV data. *=Dygraphs is slightly more accepting in the dates which it will parse. See code for details."
- },
- "stackedGraph": {
- "default": "false",
- "labels": ["Data Line display"],
- "type": "boolean",
- "description": "If set, stack series on top of one another rather than drawing them independently."
- },
- "pointSize": {
- "default": "1",
- "labels": ["Data Line display"],
- "type": "integer",
- "description": "The size of the dot to draw on each point in pixels (see drawPoints). A dot is always drawn when a point is \"isolated\", i.e. there is a missing point on either side of it. This also controls the size of those dots."
- },
- "labelsDivStyles": {
- "default": "null",
- "labels": ["Legend"],
- "type": "{}",
- "description": "Additional styles to apply to the currently-highlighted points div. For example, { 'font-weight': 'bold' } will make the labels bold."
- },
- "drawPoints": {
- "default": "false",
- "labels": ["Data Line display"],
- "type": "boolean",
- "description": "Draw a small dot at each point, in addition to a line going through the point. This makes the individual data points easier to see, but can increase visual clutter in the chart."
- },
- "height": {
- "default": "320",
- "labels": ["Overall display"],
- "type": "integer",
- "description": "Height, in pixels, of the chart. If the container div has been explicitly sized, this will be ignored."
- },
- "zoomCallback": {
- "default": "null",
- "labels": ["Callbacks"],
- "type": "function(minDate, maxDate, yRanges)",
- "description": "A function to call when the zoom window is changed (either by zooming in or out). minDate and maxDate are milliseconds since epoch. yRanges is an array of [bottom, top] pairs, one for each y-axis."
- },
- "pointClickCallback": {
- "default": "",
- "labels": ["Callbacks", "Interactive Elements"],
- "type": "",
- "description": ""
- },
- "colors": {
- "default": "(see description)",
- "labels": ["Data Series Colors"],
- "type": "array<string>",
- "example": "['red', '#00FF00']",
- "description": "List of colors for the data series. These can be of the form \"#AABBCC\" or \"rgb(255,100,200)\" or \"yellow\", etc. If not specified, equally-spaced points around a color wheel are used."
- },
- "connectSeparatedPoints": {
- "default": "false",
- "labels": ["Data Line display"],
- "type": "boolean",
- "description": "Usually, when Dygraphs encounters a missing value in a data series, it interprets this as a gap and draws it as such. If, instead, the missing values represents an x-value for which only a different series has data, then you'll want to connect the dots by setting this to true. To explicitly include a gap with this option set, use a value of NaN."
- },
- "highlightCallback": {
- "default": "null",
- "labels": ["Callbacks"],
- "type": "function(event, x, points,row)",
- "description": "When set, this callback gets called every time a new point is highlighted. The parameters are the JavaScript mousemove event, the x-coordinate of the highlighted points and an array of highlighted points: <code>[ {name: 'series', yval: y-value}, … ]</code>"
- },
- "includeZero": {
- "default": "false",
- "labels": ["Axis display"],
- "type": "boolean",
- "description": "Usually, dygraphs will use the range of the data plus some padding to set the range of the y-axis. If this option is set, the y-axis will always include zero, typically as the lowest value. This can be used to avoid exaggerating the variance in the data"
- },
- "rollPeriod": {
- "default": "1",
- "labels": ["Error Bars", "Rolling Averages"],
- "type": "integer >= 1",
- "description": "Number of days over which to average data. Discussed extensively above."
- },
- "unhighlightCallback": {
- "default": "null",
- "labels": ["Callbacks"],
- "type": "function(event)",
- "description": "When set, this callback gets called every time the user stops highlighting any point by mousing out of the graph. The parameter is the mouseout event."
- },
- "axisTickSize": {
- "default": "3.0",
- "labels": ["Axis display"],
- "type": "number",
- "description": "The size of the line to display next to each tick mark on x- or y-axes."
- },
- "labelsSeparateLines": {
- "default": "false",
- "labels": ["Legend"],
- "type": "boolean",
- "description": "Put <code><br/></code> between lines in the label string. Often used in conjunction with <strong>labelsDiv</strong>."
- },
- "xValueFormatter": {
- "default": "(Round to 2 decimal places)",
- "labels": ["Axis display"],
- "type": "function(x)",
- "description": "Function to provide a custom display format for the X value for mouseover."
- },
- "pixelsPerYLabel": {
- "default": "30",
- "labels": ["Axis display", "Grid"],
- "type": "integer",
- "description": "Number of pixels to require between each x- and y-label. Larger values will yield a sparser axis with fewer ticks."
- },
- "annotationMouseOverHandler": {
- "default": "null",
- "labels": ["Annotations"],
- "type": "function(annotation, point, dygraph, event)",
- "description": "If provided, this function is called whenever the user mouses over an annotation."
- },
- "annotationMouseOutHandler": {
- "default": "null",
- "labels": ["Annotations"],
- "type": "function(annotation, point, dygraph, event)",
- "description": "If provided, this function is called whenever the user mouses out of an annotation."
- },
- "annotationClickHandler": {
- "default": "null",
- "labels": ["Annotations"],
- "type": "function(annotation, point, dygraph, event)",
- "description": "If provided, this function is called whenever the user clicks on an annotation."
- },
- "annotationDblClickHandler": {
- "default": "null",
- "labels": ["Annotations"],
- "type": "function(annotation, point, dygraph, event)",
- "description": "If provided, this function is called whenever the user double-clicks on an annotation."
- },
- "drawCallback": {
- "default": "null",
- "labels": ["Callbacks"],
- "type": "function(dygraph, is_initial)",
- "description": "When set, this callback gets called every time the dygraph is drawn. This includes the initial draw, after zooming and repeatedly while panning. The first parameter is the dygraph being drawn. The second is a boolean value indicating whether this is the initial draw."
- },
- "labelsKMG2": {
- "default": "false",
- "labels": ["Value display/formatting"],
- "type": "boolean",
- "description": "Show k/M/G for kilo/Mega/Giga on y-axis. This is different than <code>labelsKMB</code> in that it uses base 2, not 10."
- },
- "delimiter": {
- "default": ",",
- "labels": ["CSV parsing"],
- "type": "string",
- "description": "The delimiter to look for when separating fields of a CSV file. Setting this to a tab is not usually necessary, since tab-delimited data is auto-detected."
- },
- "axisLabelFontSize": {
- "default": "14",
- "labels": ["Axis display"],
- "type": "integer",
- "description": "Size of the font (in pixels) to use in the axis labels, both x- and y-axis."
- },
- "underlayCallback": {
- "default": "null",
- "labels": ["Callbacks"],
- "type": "function(canvas, area, dygraph)",
- "description": "When set, this callback gets called before the chart is drawn. It details on how to use this."
- },
- "width": {
- "default": "480",
- "labels": ["Overall display"],
- "type": "integer",
- "description": "Width, in pixels, of the chart. If the container div has been explicitly sized, this will be ignored."
- },
- "interactionModel": {
- "default": "...",
- "labels": ["Interactive Elements"],
- "type": "Object",
- "description": "TODO(konigsberg): document this"
- },
- "xTicker": {
- "default": "Dygraph.dateTicker or Dygraph.numericTicks",
- "labels": ["Axis display"],
- "type": "function(min, max, dygraph) -> [{v: ..., label: ...}, ...]",
- "description": "This lets you specify an arbitrary function to generate tick marks on an axis. The tick marks are an array of (value, label) pairs. The built-in functions go to great lengths to choose good tick marks so, if you set this option, you'll most likely want to call one of them and modify the result."
- },
- "xAxisLabelWidth": {
- "default": "50",
- "labels": ["Axis display"],
- "type": "integer",
- "description": "Width, in pixels, of the x-axis labels."
- },
- "showLabelsOnHighlight": {
- "default": "true",
- "labels": ["Interactive Elements", "Legend"],
- "type": "boolean",
- "description": "Whether to show the legend upon mouseover."
- },
- "axis": {
- "default": "(none)",
- "labels": ["Axis display"],
- "type": "string or object",
- "description": "Set to either an object ({}) filled with options for this axis or to the name of an existing data series with its own axis to re-use that axis. See tests for usage."
- },
- "pixelsPerXLabel": {
- "default": "60",
- "labels": ["Axis display", "Grid"],
- "type": "integer",
- "description": "Number of pixels to require between each x- and y-label. Larger values will yield a sparser axis with fewer ticks."
- },
- "labelsDiv": {
- "default": "null",
- "labels": ["Legend"],
- "type": "DOM element or string",
- "example": "<code style='font-size: small'>document.getElementById('foo')</code>or<code>'foo'",
- "description": "Show data labels in an external div, rather than on the graph. This value can either be a div element or a div id."
- },
- "fractions": {
- "default": "false",
- "labels": ["CSV parsing", "Error Bars"],
- "type": "boolean",
- "description": "When set, attempt to parse each cell in the CSV file as \"a/b\", where a and b are integers. The ratio will be plotted. This allows computation of Wilson confidence intervals (see below)."
- },
- "logscale": {
- "default": "false",
- "labels": ["Axis display"],
- "type": "boolean",
- "description": "When set for a y-axis, the graph shows that axis in log scale. Any values less than or equal to zero are not displayed.\n\nNot compatible with showZero, and ignores connectSeparatedPoints. Also, showing log scale with valueRanges that are less than zero will result in an unviewable graph."
- },
- "strokeWidth": {
- "default": "1.0",
- "labels": ["Data Line display"],
- "type": "integer",
- "example": "0.5, 2.0",
- "description": "The width of the lines connecting data points. This can be used to increase the contrast or some graphs."
- },
- "wilsonInterval": {
- "default": "true",
- "labels": ["Error Bars"],
- "type": "boolean",
- "description": "Use in conjunction with the \"fractions\" option. Instead of plotting +/- N standard deviations, dygraphs will compute a Wilson confidence interval and plot that. This has more reasonable behavior for ratios close to 0 or 1."
- },
- "fillGraph": {
- "default": "false",
- "labels": ["Data Line display"],
- "type": "boolean",
- "description": "Should the area underneath the graph be filled? This option is not compatible with error bars."
- },
- "highlightCircleSize": {
- "default": "3",
- "labels": ["Interactive Elements"],
- "type": "integer",
- "description": "The size in pixels of the dot drawn over highlighted points."
- },
- "gridLineColor": {
- "default": "rgb(128,128,128)",
- "labels": ["Grid"],
- "type": "red, blue",
- "description": "The color of the gridlines."
- },
- "visibility": {
- "default": "[true, true, ...]",
- "labels": ["Data Line display"],
- "type": "Array of booleans",
- "description": "Which series should initially be visible? Once the Dygraph has been constructed, you can access and modify the visibility of each series using the <code>visibility</code> and <code>setVisibility</code> methods."
- },
- "valueRange": {
- "default": "Full range of the input is shown",
- "labels": ["Axis display"],
- "type": "Array of two numbers",
- "example": "[10, 110]",
- "description": "Explicitly set the vertical range of the graph to [low, high]."
- },
- "labelsDivWidth": {
- "default": "250",
- "labels": ["Legend"],
- "type": "integer",
- "description": "Width (in pixels) of the div which shows information on the currently-highlighted points."
- },
- "colorSaturation": {
- "default": "1.0",
- "labels": ["Data Series Colors"],
- "type": "float (0.0 - 1.0)",
- "description": "If <strong>colors</strong> is not specified, saturation of the automatically-generated data series colors."
- },
- "yAxisLabelWidth": {
- "default": "50",
- "labels": ["Axis display"],
- "type": "integer",
- "description": "Width, in pixels, of the y-axis labels. This also affects the amount of space available for a y-axis chart label."
- },
- "hideOverlayOnMouseOut": {
- "default": "true",
- "labels": ["Interactive Elements", "Legend"],
- "type": "boolean",
- "description": "Whether to hide the legend when the mouse leaves the chart area."
- },
- "yValueFormatter": {
- "default": "(Round to 2 decimal places)",
- "labels": ["Axis display"],
- "type": "function(x)",
- "description": "Function to provide a custom display format for the Y value for mouseover."
- },
- "legend": {
- "default": "onmouseover",
- "labels": ["Legend"],
- "type": "string",
- "description": "When to display the legend. By default, it only appears when a user mouses over the chart. Set it to \"always\" to always display a legend of some sort."
- },
- "labelsShowZeroValues": {
- "default": "true",
- "labels": ["Legend"],
- "type": "boolean",
- "description": "Show zero value labels in the labelsDiv."
- },
- "stepPlot": {
- "default": "false",
- "labels": ["Data Line display"],
- "type": "boolean",
- "description": "When set, display the graph as a step plot instead of a line plot."
- },
- "labelsKMB": {
- "default": "false",
- "labels": ["Value display/formatting"],
- "type": "boolean",
- "description": "Show K/M/B for thousands/millions/billions on y-axis."
- },
- "rightGap": {
- "default": "5",
- "labels": ["Overall display"],
- "type": "integer",
- "description": "Number of pixels to leave blank at the right edge of the Dygraph. This makes it easier to highlight the right-most data point."
- },
- "avoidMinZero": {
- "default": "false",
- "labels": ["Axis display"],
- "type": "boolean",
- "description": "When set, the heuristic that fixes the Y axis at zero for a data set with the minimum Y value of zero is disabled. \nThis is particularly useful for data sets that contain many zero values, especially for step plots which may otherwise have lines not visible running along the bottom axis."
- },
- "xAxisLabelFormatter": {
- "default": "Dygraph.dateAxisFormatter",
- "labels": ["Axis display", "Value display/formatting"],
- "type": "function(date, granularity)",
- "description": "Function to call to format values along the x axis."
- },
- "clickCallback": {
- "snippet": "function(e, date){<br> alert(date);<br>}",
- "default": "null",
- "labels": ["Callbacks"],
- "type": "function(e, date)",
- "description": "A function to call when a data point is clicked. The function should take two arguments, the event object for the click and the date that was clicked."
- },
- "yAxisLabelFormatter": {
- "default": "yValueFormatter",
- "labels": ["Axis display", "Value display/formatting"],
- "type": "function(x)",
- "description": "Function used to format values along the Y axis. By default it uses the same as the <code>yValueFormatter</code> unless specified."
- },
- "labels": {
- "default": "[\"X\", \"Y1\", \"Y2\", ...]*",
- "labels": ["Legend"],
- "type": "array<string>",
- "description": "A name for each data series, including the independent (X) series. For CSV files and DataTable objections, this is determined by context. For raw data, this must be specified. If it is not, default values are supplied and a warning is logged."
- },
- "dateWindow": {
- "default": "Full range of the input is shown",
- "labels": ["Axis display"],
- "type": "Array of two Dates or numbers",
- "example": "[<br> Date.parse('2006-01-01'),<br> (new Date()).valueOf()<br>]",
- "description": "Initially zoom in on a section of the graph. Is of the form [earliest, latest], where earliest/latest are milliseconds since epoch. If the data for the x-axis is numeric, the values in dateWindow must also be numbers."
- },
- "showRoller": {
- "default": "false",
- "labels": ["Interactive Elements", "Rolling Averages"],
- "type": "boolean",
- "description": "If the rolling average period text box should be shown."
- },
- "sigma": {
- "default": "2.0",
- "labels": ["Error Bars"],
- "type": "float",
- "description": "When errorBars is set, shade this many standard deviations above/below each point."
- },
- "customBars": {
- "default": "false",
- "labels": ["CSV parsing", "Error Bars"],
- "type": "boolean",
- "description": "When set, parse each CSV cell as \"low;middle;high\". Error bars will be drawn for each point between low and high, with the series itself going through middle."
- },
- "colorValue": {
- "default": "1.0",
- "labels": ["Data Series Colors"],
- "type": "float (0.0 - 1.0)",
- "description": "If colors is not specified, value of the data series colors, as in hue/saturation/value. (0.0-1.0, default 0.5)"
- },
- "errorBars": {
- "default": "false",
- "labels": ["CSV parsing", "Error Bars"],
- "type": "boolean",
- "description": "Does the data contain standard deviations? Setting this to true alters the input format (see above)."
- },
- "displayAnnotations": {
- "default": "false",
- "labels": ["Annotations"],
- "type": "boolean",
- "description": "Only applies when Dygraphs is used as a GViz chart. Causes string columns following a data series to be interpreted as annotations on points in that series. This is the same format used by Google's AnnotatedTimeLine chart."
- },
- "panEdgeFraction": {
- "default": "null",
- "labels": ["Axis Display", "Interactive Elements"],
- "type": "float",
- "default": "null",
- "description": "A value representing the farthest a graph may be panned, in percent of the display. For example, a value of 0.1 means that the graph can only be panned 10% pased the edges of the displayed values. null means no bounds."
- },
- "title": {
- "labels": ["Chart labels"],
- "type": "string",
- "default": "null",
- "description": "Text to display above the chart. You can supply any HTML for this value, not just text. If you wish to style it using CSS, use the 'dygraph-label' or 'dygraph-title' classes."
- },
- "titleHeight": {
- "default": "18",
- "labels": ["Chart labels"],
- "type": "integer",
- "description": "Height of the chart title, in pixels. This also controls the default font size of the title. If you style the title on your own, this controls how much space is set aside above the chart for the title's div."
- },
- "xlabel": {
- "labels": ["Chart labels"],
- "type": "string",
- "default": "null",
- "description": "Text to display below the chart's x-axis. You can supply any HTML for this value, not just text. If you wish to style it using CSS, use the 'dygraph-label' or 'dygraph-xlabel' classes."
- },
- "xLabelHeight": {
- "labels": ["Chart labels"],
- "type": "integer",
- "default": "18",
- "description": "Height of the x-axis label, in pixels. This also controls the default font size of the x-axis label. If you style the label on your own, this controls how much space is set aside below the chart for the x-axis label's div."
- },
- "ylabel": {
- "labels": ["Chart labels"],
- "type": "string",
- "default": "null",
- "description": "Text to display to the left of the chart's y-axis. You can supply any HTML for this value, not just text. If you wish to style it using CSS, use the 'dygraph-label' or 'dygraph-ylabel' classes. The text will be rotated 90 degrees by default, so CSS rules may behave in unintuitive ways. No additional space is set aside for a y-axis label. If you need more space, increase the width of the y-axis tick labels using the yAxisLabelWidth option. If you need a wider div for the y-axis label, either style it that way with CSS (but remember that it's rotated, so width is controlled by the 'height' property) or set the yLabelWidth option."
- },
- "yLabelWidth": {
- "labels": ["Chart labels"],
- "type": "integer",
- "default": "18",
- "description": "Width of the div which contains the y-axis label. Since the y-axis label appears rotated 90 degrees, this actually affects the height of its div."
- },
- "isZoomedIgnoreProgrammaticZoom" : {
- "default": "false",
- "labels": ["Zooming"],
- "type": "boolean",
- "description" : "When this option is passed to updateOptions() along with either the <code>dateWindow</code> or <code>valueRange</code> options, the zoom flags are not changed to reflect a zoomed state. This is primarily useful for when the display area of a chart is changed programmatically and also where manual zooming is allowed and use is made of the <code>isZoomed</code> method to determine this."
- },
- "drawXGrid": {
- "default": "true",
- "labels": ["Grid"],
- "type": "boolean",
- "description" : "Whether to display vertical gridlines under the chart."
- },
- "drawYGrid": {
- "default": "true",
- "labels": ["Grid"],
- "type": "boolean",
- "description" : "Whether to display horizontal gridlines under the chart."
- },
- "drawXAxis": {
- "default": "true",
- "labels": ["Axis display"],
- "type": "boolean",
- "description" : "Whether to draw the x-axis. Setting this to false also prevents x-axis ticks from being drawn and reclaims the space for the chart grid/lines."
- },
- "drawYAxis": {
- "default": "true",
- "labels": ["Axis display"],
- "type": "boolean",
- "description" : "Whether to draw the y-axis. Setting this to false also prevents y-axis ticks from being drawn and reclaims the space for the chart grid/lines."
- },
- "gridLineWidth": {
- "default": "0.3",
- "labels": ["Grid"],
- "type": "float",
- "description" : "Thickness (in pixels) of the gridlines drawn under the chart. The vertical/horizontal gridlines can be turned off entirely by using the drawXGrid and drawYGrid options."
- },
- "axisLineWidth": {
- "default": "0.3",
- "labels": ["Axis display"],
- "type": "float",
- "description" : "Thickness (in pixels) of the x- and y-axis lines."
- },
- "axisLineColor": {
- "default": "black",
- "labels": ["Axis display"],
- "type": "string",
- "description" : "Color of the x- and y-axis lines. Accepts any value which the HTML canvas strokeStyle attribute understands, e.g. 'black' or 'rgb(0, 100, 255)'."
- },
- "fillAlpha": {
- "default": "0.15",
- "labels": ["Error bars", "Data Series Colors"],
- "type": "float (0.0 - 1.0)",
- "description" : "Error bars (or custom bars) for each series are drawn in the same color as the series, but with partial transparency. This sets the transparency. A value of 0.0 means that the error bars will not be drawn, whereas a value of 1.0 means that the error bars will be as dark as the line for the series itself. This can be used to produce chart lines whose thickness varies at each point."
- },
- "axisLabelColor": {
- "default": "black",
- "labels": ["Axis display"],
- "type": "string",
- "description" : "Color for x- and y-axis labels. This is a CSS color string."
- },
- "axisLabelWidth": {
- "default": "50",
- "labels": ["Axis display", "Chart labels"],
- "type": "integer",
- "description" : "Width (in pixels) of the containing divs for x- and y-axis labels. For the y-axis, this also controls "
- },
- "sigFigs" : {
- "default": "null",
- "labels": ["Value display/formatting"],
- "type": "integer",
- "description": "By default, dygraphs displays numbers with a fixed number of digits after the decimal point. If you'd prefer to have a fixed number of significant figures, set this option to that number of sig figs. A value of 2, for instance, would cause 1 to be display as 1.0 and 1234 to be displayed as 1.23e+3."
- },
- "digitsAfterDecimal" : {
- "default": "2",
- "labels": ["Value display/formatting"],
- "type": "integer",
- "description": "Unless it's run in scientific mode (see the <code>sigFigs</code> option), dygraphs displays numbers with <code>digitsAfterDecimal</code> digits after the decimal point. Trailing zeros are not displayed, so with a value of 2 you'll get '0', '0.1', '0.12', '123.45' but not '123.456' (it will be rounded to '123.46'). Numbers with absolute value less than 0.1^digitsAfterDecimal (i.e. those which would show up as '0.00') will be displayed in scientific notation."
- },
- "maxNumberWidth" : {
- "default": "6",
- "labels": ["Value display/formatting"],
- "type": "integer",
- "description": "When displaying numbers in normal (not scientific) mode, large numbers will be displayed with many trailing zeros (e.g. 100000000 instead of 1e9). This can lead to unwieldy y-axis labels. If there are more than <code>maxNumberWidth</code> digits to the left of the decimal in a number, dygraphs will switch to scientific notation, even when not operating in scientific mode. If you'd like to see all those digits, set this to something large, like 20 or 30."
- },
- "file": {
- "default": "(set when constructed)",
- "labels": ["Data"],
- "type": "string (URL of CSV or CSV), GViz DataTable or 2D Array",
- "description": "Sets the data being displayed in the chart. This can only be set when calling updateOptions; it cannot be set from the constructor. For a full description of valid data formats, see the <a href='http://dygraphs.com/data.html'>Data Formats</a> page."
- }
-}
-; // </JSON>
-// NOTE: in addition to parsing as JS, this snippet is expected to be valid
-// JSON. This assumption cannot be checked in JS, but it will be checked when
-// documentation is generated by the generate-documentation.py script. For the
-// most part, this just means that you should always use double quotes.
-
-// Do a quick sanity check on the options reference.
-(function() {
- var warn = function(msg) { if (console) console.warn(msg); };
- var flds = ['type', 'default', 'description'];
- var valid_cats = [
- 'Annotations',
- 'Axis display',
- 'Chart labels',
- 'CSV parsing',
- 'Callbacks',
- 'Data',
- 'Data Line display',
- 'Data Series Colors',
- 'Error Bars',
- 'Grid',
- 'Interactive Elements',
- 'Legend',
- 'Overall display',
- 'Rolling Averages',
- 'Value display/formatting',
- 'Zooming'
- ];
- var cats = {};
- for (var i = 0; i < valid_cats.length; i++) cats[valid_cats[i]] = true;
-
- for (var k in Dygraph.OPTIONS_REFERENCE) {
- if (!Dygraph.OPTIONS_REFERENCE.hasOwnProperty(k)) continue;
- var op = Dygraph.OPTIONS_REFERENCE[k];
- for (var i = 0; i < flds.length; i++) {
- if (!op.hasOwnProperty(flds[i])) {
- warn('Option ' + k + ' missing "' + flds[i] + '" property');
- } else if (typeof(op[flds[i]]) != 'string') {
- warn(k + '.' + flds[i] + ' must be of type string');
- }
- }
- var labels = op['labels'];
- if (typeof(labels) !== 'object') {
- warn('Option "' + k + '" is missing a "labels": [...] option');
- for (var i = 0; i < labels.length; i++) {
- if (!cats.hasOwnProperty(labels[i])) {
- warn('Option "' + k + '" has label "' + labels[i] +
- '", which is invalid.');
- }
- }
- }
- }
-})();
-// </REMOVE_FOR_COMBINED>
projects / dygraphs.git / blobdiff