*/
+// For "production" code, this gets set to false by uglifyjs.
+if (typeof(DEBUG) === 'undefined') DEBUG=true;
+
/*jshint globalstrict: true */
/*global DygraphLayout:false, DygraphCanvasRenderer:false, DygraphOptions:false, G_vmlCanvasManager:false,ActiveXObject:false */
"use strict";
// Old versions of dygraphs took in the series labels as a constructor
// parameter. This doesn't make sense anymore, but it's easy to continue
// to support this usage.
- this.warn("Using deprecated four-argument dygraph constructor");
+ console.warn("Using deprecated four-argument dygraph constructor");
this.__old_init__(div, data, opts, opt_fourth_param);
} else {
this.__init__(div, data, opts);
Dygraph.NAME = "Dygraph";
Dygraph.VERSION = "1.0.1";
Dygraph.__repr__ = function() {
- return "[" + this.NAME + " " + this.VERSION + "]";
+ return "[" + Dygraph.NAME + " " + Dygraph.VERSION + "]";
};
/**
* Returns information about the Dygraph class.
*/
Dygraph.toString = function() {
- return this.__repr__();
+ return Dygraph.__repr__();
};
// Various default values
* @private
* Return a string version of a number. This respects the digitsAfterDecimal
* and maxNumberWidth options.
- * @param {Number} x The number to be formatted
+ * @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 {string} name The name of the point's data series
* @param {Dygraph} g The dygraph object
*/
Dygraph.numberValueFormatter = function(x, opts, pt, g) {
k_labels = Dygraph.KMB_LABELS;
}
if (kmg2) {
- if (kmb) Dygraph.warn("Setting both labelsKMB and labelsKMG2. Pick one!");
+ if (kmb) console.warn("Setting both labelsKMB and labelsKMG2. Pick one!");
k = 1024;
k_labels = Dygraph.KMG2_BIG_LABELS;
m_labels = Dygraph.KMG2_SMALL_LABELS;
};
/**
- * 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"
+ * @type {!Array.<string>}
* @private
+ * @constant
*/
-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());
+Dygraph.SHORT_MONTH_NAMES_ = ['Jan', 'Feb', 'Mar', 'Apr', 'May', 'Jun', 'Jul', 'Aug', 'Sep', 'Oct', 'Nov', 'Dec'];
- 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.
+ * is displaying values at the stated granularity. This respects the
+ * labelsUTC option.
* @param {Date} date The date to format
- * @param {Number} granularity One of the Dygraph granularity constants
- * @return {String} The formatted date
+ * @param {number} granularity One of the Dygraph granularity constants
+ * @param {Dygraph} opts An options view
+ * @return {string} The date formatted as local time
* @private
*/
-Dygraph.dateAxisFormatter = function(date, granularity) {
+Dygraph.dateAxisLabelFormatter = function(date, granularity, opts) {
+ var utc = opts('labelsUTC');
+ var accessors = utc ? Dygraph.DateAccessorsUTC : Dygraph.DateAccessorsLocal;
+
+ var year = accessors.getFullYear(date),
+ month = accessors.getMonth(date),
+ day = accessors.getDate(date),
+ hours = accessors.getHours(date),
+ mins = accessors.getMinutes(date),
+ secs = accessors.getSeconds(date),
+ millis = accessors.getSeconds(date);
+
if (granularity >= Dygraph.DECADAL) {
- return date.strftime('%Y');
+ return '' + year;
} else if (granularity >= Dygraph.MONTHLY) {
- return date.strftime('%b %y');
+ return Dygraph.SHORT_MONTH_NAMES_[month] + ' ' + year;
} else {
- var frac = date.getHours() * 3600 + date.getMinutes() * 60 + date.getSeconds() + date.getMilliseconds();
+ var frac = hours * 3600 + mins * 60 + secs + 1e-3 * millis;
if (frac === 0 || granularity >= Dygraph.DAILY) {
- return new Date(date.getTime() + 3600*1000).strftime('%d%b');
+ // e.g. '21Jan' (%d%b)
+ return Dygraph.zeropad(day) + Dygraph.SHORT_MONTH_NAMES_[month];
} else {
- return Dygraph.hmsString_(date.getTime());
+ return Dygraph.hmsString_(hours, mins, secs);
}
}
};
+// alias in case anyone is referencing the old method.
+Dygraph.dateAxisFormatter = Dygraph.dateAxisLabelFormatter;
+
+/**
+ * Return a string version of a JS date for a value label. This respects the
+ * labelsUTC option.
+ * @param {Date} date The date to be formatted
+ * @param {Dygraph} opts An options view
+ * @private
+ */
+Dygraph.dateValueFormatter = function(d, opts) {
+ return Dygraph.dateString_(d, opts('labelsUTC'));
+};
/**
* Standard plotters. These may be used by clients.
rangeSelectorHeight: 40,
rangeSelectorPlotStrokeColor: "#808FAB",
rangeSelectorPlotFillColor: "#A7B1C4",
+ showInRangeSelector: null,
// The ordering here ensures that central lines always appear above any
// fill bars/error bars.
axes: {
x: {
pixelsPerLabel: 60,
- axisLabelFormatter: Dygraph.dateAxisFormatter,
- valueFormatter: Dygraph.dateString_,
+ axisLabelFormatter: Dygraph.dateAxisLabelFormatter,
+ valueFormatter: Dygraph.dateValueFormatter,
drawGrid: true,
drawAxis: true,
independentTicks: true,
* and context <canvas> inside of it. See the constructor for details.
* on the parameters.
* @param {Element} div the Element to render the graph into.
- * @param {String | Function} file Source data
+ * @param {string | Function} file Source data
* @param {Object} attrs Miscellaneous other options
* @private
*/
}
if (!div) {
- Dygraph.error("Constructing dygraph with a non-existent div!");
+ console.error("Constructing dygraph with a non-existent div!");
return;
}
};
/**
+ * Fetch a plugin instance of a particular class. Only for testing.
+ * @private
+ * @param {!Class} type The type of the plugin.
+ * @return {Object} Instance of the plugin, or null if there is none.
+ */
+Dygraph.prototype.getPluginInstance_ = function(type) {
+ for (var i = 0; i < this.plugins_.length; i++) {
+ var p = this.plugins_[i];
+ if (p.plugin instanceof type) {
+ return p.plugin;
+ }
+ }
+ return null;
+};
+
+/**
* Returns the zoomed status of the chart for one or both axes.
*
* Axis is an optional parameter. Can be set to 'x' or 'y'.
* Returns the value of an option. This may be set by the user (either in the
* constructor or by calling updateOptions) or by dygraphs, and may be set to a
* per-series value.
- * @param { String } name The name of the option, e.g. 'rollPeriod'.
- * @param { String } [seriesName] The name of the series to which the option
+ * @param {string} name The name of the option, e.g. 'rollPeriod'.
+ * @param {string} [seriesName] The name of the series to which the option
* will be applied. If no per-series value of this option is available, then
* the global value is returned. This is optional.
* @return { ... } The value of the option.
*/
Dygraph.prototype.attr_ = function(name, seriesName) {
-// <REMOVE_FOR_COMBINED>
- if (typeof(Dygraph.OPTIONS_REFERENCE) === 'undefined') {
- this.error('Must include options reference JS for testing');
- } else if (!Dygraph.OPTIONS_REFERENCE.hasOwnProperty(name)) {
- this.error('Dygraphs is using property ' + name + ', which has no entry ' +
- 'in the Dygraphs.OPTIONS_REFERENCE listing.');
- // Only log this error once.
- Dygraph.OPTIONS_REFERENCE[name] = true;
- }
-// </REMOVE_FOR_COMBINED>
+ if (DEBUG) {
+ if (typeof(Dygraph.OPTIONS_REFERENCE) === 'undefined') {
+ console.error('Must include options reference JS for testing');
+ } else if (!Dygraph.OPTIONS_REFERENCE.hasOwnProperty(name)) {
+ console.error('Dygraphs is using property ' + name + ', which has no ' +
+ 'entry in the Dygraphs.OPTIONS_REFERENCE listing.');
+ // Only log this error once.
+ Dygraph.OPTIONS_REFERENCE[name] = true;
+ }
+ }
return seriesName ? this.attributes_.getForSeries(name, seriesName) : this.attributes_.get(name);
};
* dygraphs will remain in a consistent state. If you want to modify an option,
* use updateOptions() instead.
*
- * @param { String } name The name of the option (e.g. 'strokeWidth')
- * @param { String } [opt_seriesName] Series name to get per-series values.
- * @return { ... } The value of the option.
+ * @param {string} name The name of the option (e.g. 'strokeWidth')
+ * @param {string=} opt_seriesName Series name to get per-series values.
+ * @return {*} The value of the option.
*/
Dygraph.prototype.getOption = function(name, opt_seriesName) {
return this.attr_(name, opt_seriesName);
if (axis_opts && axis_opts[axis] && axis_opts[axis].hasOwnProperty(opt)) {
return axis_opts[axis][opt];
}
+
+ // I don't like that this is in a second spot.
+ if (axis === 'x' && opt === 'logscale') {
+ // return the default value.
+ // TODO(konigsberg): pull the default from a global default.
+ return false;
+ }
+
// user-specified attributes always trump defaults, even if they're less
// specific.
if (typeof(self.user_attrs_[opt]) != 'undefined') {
/**
* Returns the current rolling period, as set by the user or an option.
- * @return {Number} The number of points in the rolling window
+ * @return {number} The number of points in the rolling window
*/
Dygraph.prototype.rollPeriod = function() {
return this.rollPeriod_;
var area = this.plotter_.area;
var xRange = this.xAxisRange();
- return xRange[0] + (x - area.x) / area.w * (xRange[1] - xRange[0]);
+
+ if (!this.attributes_.getForAxis("logscale", 'x')) {
+ return xRange[0] + (x - area.x) / area.w * (xRange[1] - xRange[0]);
+ } else {
+ // TODO: remove duplicate code?
+ // Computing the inverse of toDomCoord.
+ var pct = (x - area.x) / area.w;
+
+ // Computing the inverse of toPercentXCoord. The function was arrived at with
+ // the following steps:
+ //
+ // Original calcuation:
+ // pct = (log(x) - log(xRange[0])) / (log(xRange[1]) - log(xRange[0])));
+ //
+ // Multiply both sides by the right-side demoninator.
+ // pct * (log(xRange[1] - log(xRange[0]))) = log(x) - log(xRange[0])
+ //
+ // add log(xRange[0]) to both sides
+ // log(xRange[0]) + (pct * (log(xRange[1]) - log(xRange[0])) = log(x);
+ //
+ // Swap both sides of the equation,
+ // log(x) = log(xRange[0]) + (pct * (log(xRange[1]) - log(xRange[0]))
+ //
+ // Use both sides as the exponent in 10^exp and we're done.
+ // x = 10 ^ (log(xRange[0]) + (pct * (log(xRange[1]) - log(xRange[0])))
+ var logr0 = Dygraph.log10(xRange[0]);
+ var logr1 = Dygraph.log10(xRange[1]);
+ var exponent = logr0 + (pct * (logr1 - logr0));
+ var value = Math.pow(Dygraph.LOG_SCALE, exponent);
+ return value;
+ }
};
/**
// the following steps:
//
// Original calcuation:
- // pct = (logr1 - Dygraph.log10(y)) / (logr1 - Dygraph.log10(yRange[0]));
+ // pct = (log(yRange[1]) - log(y)) / (log(yRange[1]) - log(yRange[0]));
//
- // Move denominator to both sides:
- // pct * (logr1 - Dygraph.log10(yRange[0])) = logr1 - Dygraph.log10(y);
+ // Multiply both sides by the right-side demoninator.
+ // pct * (log(yRange[1]) - log(yRange[0])) = log(yRange[1]) - log(y);
//
- // subtract logr1, and take the negative value.
- // logr1 - (pct * (logr1 - Dygraph.log10(yRange[0]))) = Dygraph.log10(y);
+ // subtract log(yRange[1]) from both sides.
+ // (pct * (log(yRange[1]) - log(yRange[0]))) - log(yRange[1]) = -log(y);
//
- // Swap both sides of the equation, and we can compute the log of the
- // return value. Which means we just need to use that as the exponent in
- // e^exponent.
- // Dygraph.log10(y) = logr1 - (pct * (logr1 - Dygraph.log10(yRange[0])));
-
+ // and multiply both sides by -1.
+ // log(yRange[1]) - (pct * (logr1 - log(yRange[0])) = log(y);
+ //
+ // Swap both sides of the equation,
+ // log(y) = log(yRange[1]) - (pct * (log(yRange[1]) - log(yRange[0])));
+ //
+ // Use both sides as the exponent in 10^exp and we're done.
+ // y = 10 ^ (log(yRange[1]) - (pct * (log(yRange[1]) - log(yRange[0]))));
+ var logr0 = Dygraph.log10(yRange[0]);
var logr1 = Dygraph.log10(yRange[1]);
- var exponent = logr1 - (pct * (logr1 - Dygraph.log10(yRange[0])));
+ var exponent = logr1 - (pct * (logr1 - logr0));
var value = Math.pow(Dygraph.LOG_SCALE, exponent);
return value;
}
* If y is null, this returns null.
* if axis is null, this uses the first axis.
*
- * @param { Number } y The data y-coordinate.
- * @param { Number } [axis] The axis number on which the data coordinate lives.
- * @return { Number } A fraction in [0, 1] where 0 = the top edge.
+ * @param {number} y The data y-coordinate.
+ * @param {number} [axis] The axis number on which the data coordinate lives.
+ * @return {number} A fraction in [0, 1] where 0 = the top edge.
*/
Dygraph.prototype.toPercentYCoord = function(y, axis) {
if (y === null) {
var pct;
var logscale = this.attributes_.getForAxis("logscale", axis);
- if (!logscale) {
+ if (logscale) {
+ var logr0 = Dygraph.log10(yRange[0]);
+ var logr1 = Dygraph.log10(yRange[1]);
+ pct = (logr1 - Dygraph.log10(y)) / (logr1 - logr0);
+ } else {
// yRange[1] - y is unit distance from the bottom.
// yRange[1] - yRange[0] is the scale of the range.
// (yRange[1] - y) / (yRange[1] - yRange[0]) is the % from the bottom.
pct = (yRange[1] - y) / (yRange[1] - yRange[0]);
- } else {
- var logr1 = Dygraph.log10(yRange[1]);
- pct = (logr1 - Dygraph.log10(y)) / (logr1 - Dygraph.log10(yRange[0]));
}
return pct;
};
* values can fall outside the canvas.
*
* If x is null, this returns null.
- * @param { Number } x The data x-coordinate.
- * @return { Number } A fraction in [0, 1] where 0 = the left edge.
+ * @param {number} x The data x-coordinate.
+ * @return {number} A fraction in [0, 1] where 0 = the left edge.
*/
Dygraph.prototype.toPercentXCoord = function(x) {
if (x === null) {
}
var xRange = this.xAxisRange();
- return (x - xRange[0]) / (xRange[1] - xRange[0]);
+ var pct;
+ var logscale = this.attributes_.getForAxis("logscale", 'x') ;
+ if (logscale == true) { // logscale can be null so we test for true explicitly.
+ var logr0 = Dygraph.log10(xRange[0]);
+ var logr1 = Dygraph.log10(xRange[1]);
+ pct = (Dygraph.log10(x) - logr0) / (logr1 - logr0);
+ } else {
+ // x - xRange[0] is unit distance from the left.
+ // xRange[1] - xRange[0] is the scale of the range.
+ // The full expression below is the % from the left.
+ pct = (x - xRange[0]) / (xRange[1] - xRange[0]);
+ }
+ return pct;
};
/**
* Returns the number of columns (including the independent variable).
- * @return { Integer } The number of columns.
+ * @return {number} The number of columns.
*/
Dygraph.prototype.numColumns = function() {
if (!this.rawData_) return 0;
/**
* Returns the number of rows (excluding any header/label row).
- * @return { Integer } The number of rows, less any header.
+ * @return {number} The number of rows, less any header.
*/
Dygraph.prototype.numRows = function() {
if (!this.rawData_) return 0;
* Returns the value in the given row and column. If the row and column exceed
* the bounds on the data, returns null. Also returns null if the value is
* missing.
- * @param { Number} row The row number of the data (0-based). Row 0 is the
- * first row of data, not a header row.
- * @param { Number} col The column number of the data (0-based)
- * @return { Number } The value in the specified cell or null if the row/col
- * were out of range.
+ * @param {number} row The row number of the data (0-based). Row 0 is the
+ * first row of data, not a header row.
+ * @param {number} col The column number of the data (0-based)
+ * @return {number} The value in the specified cell or null if the row/col
+ * were out of range.
*/
Dygraph.prototype.getValue = function(row, col) {
if (row < 0 || row > this.rawData_.length) return null;
// TODO(danvk): any other styles that are useful to set here?
this.graphDiv.style.textAlign = 'left'; // This is a CSS "reset"
+ this.graphDiv.style.position = 'relative';
enclosing.appendChild(this.graphDiv);
// Create the canvas for interactive parts of the chart.
// ... and for static parts of the chart.
this.hidden_ = this.createPlotKitCanvas_(this.canvas_);
- this.resizeElements_();
-
this.canvas_ctx_ = Dygraph.getContext(this.canvas_);
this.hidden_ctx_ = Dygraph.getContext(this.hidden_);
+ this.resizeElements_();
+
// The interactive parts of the graph are drawn on top of the chart.
this.graphDiv.appendChild(this.hidden_);
this.graphDiv.appendChild(this.canvas_);
Dygraph.prototype.resizeElements_ = function() {
this.graphDiv.style.width = this.width_ + "px";
this.graphDiv.style.height = this.height_ + "px";
- this.canvas_.width = this.width_;
- this.canvas_.height = this.height_;
+
+ var canvasScale = Dygraph.getContextPixelRatio(this.canvas_ctx_);
+ this.canvas_.width = this.width_ * canvasScale;
+ this.canvas_.height = this.height_ * canvasScale;
this.canvas_.style.width = this.width_ + "px"; // for IE
this.canvas_.style.height = this.height_ + "px"; // for IE
- this.hidden_.width = this.width_;
- this.hidden_.height = this.height_;
+ if (canvasScale !== 1) {
+ this.canvas_ctx_.scale(canvasScale, canvasScale);
+ }
+
+ var hiddenScale = Dygraph.getContextPixelRatio(this.hidden_ctx_);
+ this.hidden_.width = this.width_ * hiddenScale;
+ this.hidden_.height = this.height_ * hiddenScale;
this.hidden_.style.width = this.width_ + "px"; // for IE
this.hidden_.style.height = this.height_ + "px"; // for IE
+ if (hiddenScale !== 1) {
+ this.hidden_ctx_.scale(hiddenScale, hiddenScale);
+ }
};
/**
* Return the list of colors. This is either the list of colors passed in the
* attributes or the autogenerated list of rgb(r,g,b) strings.
* This does not return colors for invisible series.
- * @return {Array<string>} The list of colors.
+ * @return {Array.<string>} The list of colors.
*/
Dygraph.prototype.getColors = function() {
return this.colors_;
};
/**
- * @private
- * Converts page the x-coordinate of the event to pixel x-coordinates on the
- * canvas (i.e. DOM Coords).
- */
-Dygraph.prototype.dragGetX_ = function(e, context) {
- return Dygraph.pageX(e) - context.px;
-};
-
-/**
- * @private
- * Converts page the y-coordinate of the event to pixel y-coordinates on the
- * canvas (i.e. DOM Coords).
- */
-Dygraph.prototype.dragGetY_ = function(e, context) {
- return Dygraph.pageY(e) - context.py;
-};
-
-/**
* Set up all the mouse handlers needed to capture dragging behavior for zoom
* events.
* @private
event.cancelBubble = true;
}
- contextB.px = Dygraph.findPosX(g.canvas_);
- contextB.py = Dygraph.findPosY(g.canvas_);
- contextB.dragStartX = g.dragGetX_(event, contextB);
- contextB.dragStartY = g.dragGetY_(event, contextB);
+ var canvasPos = Dygraph.findPos(g.canvas_);
+ contextB.px = canvasPos.x;
+ contextB.py = canvasPos.y;
+ contextB.dragStartX = Dygraph.dragGetX_(event, contextB);
+ contextB.dragStartY = Dygraph.dragGetY_(event, contextB);
contextB.cancelNextDblclick = false;
contextB.tarp.cover();
}
* 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
- * coordinates.
- * @param {Number} endX The current X position of the drag, in canvas coords.
- * @param {Number} startY The Y position where the drag started, in canvas
- * coordinates.
- * @param {Number} endY The current Y position of the drag, in canvas coords.
- * @param {Number} prevDirection the value of direction on the previous call to
- * this function. Used to avoid excess redrawing
- * @param {Number} prevEndX The value of endX on the previous call to this
- * function. Used to avoid excess redrawing
- * @param {Number} prevEndY The value of endY on the previous call to this
- * function. Used to avoid excess redrawing
+ * @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
+ * coordinates.
+ * @param {number} endX The current X position of the drag, in canvas coords.
+ * @param {number} startY The Y position where the drag started, in canvas
+ * coordinates.
+ * @param {number} endY The current Y position of the drag, in canvas coords.
+ * @param {number} prevDirection the value of direction on the previous call to
+ * this function. Used to avoid excess redrawing
+ * @param {number} prevEndX The value of endX on the previous call to this
+ * function. Used to avoid excess redrawing
+ * @param {number} prevEndY The value of endY on the previous call to this
+ * function. Used to avoid excess redrawing
* @private
*/
Dygraph.prototype.drawZoomRect_ = function(direction, startX, endX, startY,
* points near lowX or highX. Don't confuse this function with doZoomXDates,
* which accepts dates that match the raw data. This function redraws the graph.
*
- * @param {Number} lowX The leftmost pixel value that should be visible.
- * @param {Number} highX The rightmost pixel value that should be visible.
+ * @param {number} lowX The leftmost pixel value that should be visible.
+ * @param {number} highX The rightmost pixel value that should be visible.
* @private
*/
Dygraph.prototype.doZoomX_ = function(lowX, highX) {
};
/**
- * Transition function to use in animations. Returns values between 0.0
- * (totally old values) and 1.0 (totally new values) for each frame.
- * @private
- */
-Dygraph.zoomAnimationFunction = function(frame, numFrames) {
- var k = 1.5;
- return (1.0 - Math.pow(k, -frame)) / (1.0 - Math.pow(k, -numFrames));
-};
-
-/**
* Zoom to something containing [minDate, maxDate] values. Don't confuse this
* method with doZoomX which accepts pixel coordinates. This function redraws
* the graph.
*
- * @param {Number} minDate The minimum date that should be visible.
- * @param {Number} maxDate The maximum date that should be visible.
+ * @param {number} minDate The minimum date that should be visible.
+ * @param {number} maxDate The maximum date that should be visible.
* @private
*/
Dygraph.prototype.doZoomXDates_ = function(minDate, maxDate) {
- // TODO(danvk): when yAxisRange is null (i.e. "fit to data", the animation
- // can produce strange effects. Rather than the y-axis transitioning slowly
+ // TODO(danvk): when xAxisRange is null (i.e. "fit to data", the animation
+ // can produce strange effects. Rather than the x-axis transitioning slowly
// between values, it can jerk around.)
var old_window = this.xAxisRange();
var new_window = [minDate, maxDate];
* Zoom to something containing [lowY, highY]. These are pixel coordinates in
* the canvas. This function redraws the graph.
*
- * @param {Number} lowY The topmost pixel value that should be visible.
- * @param {Number} highY The lowest pixel value that should be visible.
+ * @param {number} lowY The topmost pixel value that should be visible.
+ * @param {number} highY The lowest pixel value that should be visible.
* @private
*/
Dygraph.prototype.doZoomY_ = function(lowY, highY) {
};
/**
+ * Transition function to use in animations. Returns values between 0.0
+ * (totally old values) and 1.0 (totally new values) for each frame.
+ * @private
+ */
+Dygraph.zoomAnimationFunction = function(frame, numFrames) {
+ var k = 1.5;
+ return (1.0 - Math.pow(k, -frame)) / (1.0 - Math.pow(k, -numFrames));
+};
+
+/**
* Reset the zoom to the original view coordinates. This is the same as
* double-clicking on the graph.
*/
if (event.offsetX && event.offsetY) {
return [ event.offsetX, event.offsetY ];
} else {
- var canvasx = Dygraph.pageX(event) - Dygraph.findPosX(this.mouseEventElement_);
- var canvasy = Dygraph.pageY(event) - Dygraph.findPosY(this.mouseEventElement_);
+ var eventElementPos = Dygraph.findPos(this.mouseEventElement_);
+ var canvasx = Dygraph.pageX(event) - eventElementPos.x;
+ var canvasy = Dygraph.pageY(event) - eventElementPos.y;
return [canvasx, canvasy];
}
};
/**
* Given a canvas X coordinate, find the closest row.
- * @param {Number} domX graph-relative DOM X coordinate
- * Returns: row number, integer
+ * @param {number} domX graph-relative DOM X coordinate
+ * Returns {number} row number.
* @private
*/
Dygraph.prototype.findClosestRow = function(domX) {
* that's closest to the supplied DOM coordinates using the standard
* Euclidean X,Y distance.
*
- * @param {Number} domX graph-relative DOM X coordinate
- * @param {Number} domY graph-relative DOM Y coordinate
+ * @param {number} domX graph-relative DOM X coordinate
+ * @param {number} domY graph-relative DOM Y coordinate
* Returns: {row, seriesName, point}
* @private
*/
* then finds the series which puts the Y coordinate on top of its filled area,
* using linear interpolation between adjacent point pairs.
*
- * @param {Number} domX graph-relative DOM X coordinate
- * @param {Number} domY graph-relative DOM Y coordinate
+ * @param {number} domX graph-relative DOM X coordinate
+ * @param {number} domY graph-relative DOM Y coordinate
* Returns: {row, seriesName, point}
* @private
*/
ctx.lineWidth = this.getNumericOption('strokeWidth', pt.name);
ctx.strokeStyle = color;
ctx.fillStyle = color;
- callback(this.g, pt.name, ctx, canvasx, pt.canvasy,
+ callback(this, pt.name, ctx, canvasx, pt.canvasy,
color, circleSize, pt.idx);
}
ctx.restore();
* Manually set the selected points and display information about them in the
* legend. The selection can be cleared using clearSelection() and queried
* using getSelection().
- * @param { Integer } row number that should be highlighted (i.e. appear with
+ * @param {number} row Row number that should be highlighted (i.e. appear with
* hover dots on the chart). Set to false to clear any selection.
- * @param { seriesName } optional series name to highlight that series with the
+ * @param {seriesName} optional series name to highlight that series with the
* the highlightSeriesOpts setting.
* @param { locked } optional If true, keep seriesName selected when mousing
* over the graph, disabling closest-series highlighting. Call clearSelection()
this.lastRow_ = row;
for (var setIdx = 0; setIdx < this.layout_.points.length; ++setIdx) {
var points = this.layout_.points[setIdx];
+ // Check if the point at the appropriate index is the point we're looking
+ // for. If it is, just use it, otherwise search the array for a point
+ // in the proper place.
var setRow = row - this.getLeftBoundary_(setIdx);
- if (setRow < points.length) {
+ if (setRow < points.length && points[setRow].idx == row) {
var point = points[setRow];
if (point.yval !== null) this.selPoints_.push(point);
+ } else {
+ for (var pointIdx = 0; pointIdx < points.length; ++pointIdx) {
+ var point = points[pointIdx];
+ if (point.idx == row) {
+ if (point.yval !== null) {
+ this.selPoints_.push(point);
+ }
+ break;
+ }
+ }
}
}
} else {
/**
* Returns the number of the currently selected row. To get data for this row,
* you can use the getValue method.
- * @return { Integer } row number, or -1 if nothing is selected
+ * @return {number} row number, or -1 if nothing is selected
*/
Dygraph.prototype.getSelection = function() {
if (!this.selPoints_ || this.selPoints_.length < 1) {
/**
* Fires when there's data available to be graphed.
- * @param {String} data Raw CSV data to be plotted
+ * @param {string} data Raw CSV data to be plotted
* @private
*/
Dygraph.prototype.loadedEvent_ = function(data) {
var actualYval = point.yval;
if (isNaN(actualYval) || actualYval === null) {
- // Interpolate/extend for stacking purposes if possible.
- updateNextPoint(i);
- if (prevPoint && nextPoint && fillMethod != 'none') {
- // Use linear interpolation between prevPoint and nextPoint.
- actualYval = prevPoint.yval + (nextPoint.yval - prevPoint.yval) *
- ((xval - prevPoint.xval) / (nextPoint.xval - prevPoint.xval));
- } else if (prevPoint && fillMethod == 'all') {
- actualYval = prevPoint.yval;
- } else if (nextPoint && fillMethod == 'all') {
- actualYval = nextPoint.yval;
- } else {
+ if(fillMethod == 'none') {
actualYval = 0;
+ } else {
+ // Interpolate/extend for stacking purposes if possible.
+ updateNextPoint(i);
+ if (prevPoint && nextPoint && fillMethod != 'none') {
+ // Use linear interpolation between prevPoint and nextPoint.
+ actualYval = prevPoint.yval + (nextPoint.yval - prevPoint.yval) *
+ ((xval - prevPoint.xval) / (nextPoint.xval - prevPoint.xval));
+ } else if (prevPoint && fillMethod == 'all') {
+ actualYval = prevPoint.yval;
+ } else if (nextPoint && fillMethod == 'all') {
+ actualYval = nextPoint.yval;
+ } else {
+ actualYval = 0;
+ }
}
} else {
prevPoint = point;
var extremes = {}; // series name -> [low, high]
var seriesIdx, sampleIdx;
var firstIdx, lastIdx;
+ var axisIdx;
// Loop over the fields (series). Go from the last to the first,
// because if they're stacked that's how we accumulate the values.
seriesName, boundaryIds[seriesIdx-1][0]);
if (this.getBooleanOption("stackedGraph")) {
- Dygraph.stackPoints_(seriesPoints, cumulativeYval, seriesExtremes,
+ axisIdx = this.attributes_.axisForSeries(seriesName);
+ if (cumulativeYval[axisIdx] === undefined) {
+ cumulativeYval[axisIdx] = [];
+ }
+ Dygraph.stackPoints_(seriesPoints, cumulativeYval[axisIdx], seriesExtremes,
this.getBooleanOption("stackedGraphNaNFill"));
}
if (this.getStringOption("timingName")) {
var end = new Date();
- Dygraph.info(this.getStringOption("timingName") + " - drawGraph: " + (end - start) + "ms");
+ console.log(this.getStringOption("timingName") + " - drawGraph: " + (end - start) + "ms");
}
};
/**
* Returns the number of y-axes on the chart.
- * @return {Number} the number of axes.
+ * @return {number} the number of axes.
*/
Dygraph.prototype.numAxes = function() {
return this.attributes_.numAxes();
/**
* @private
* Returns axis properties for the given series.
- * @param { String } setName The name of the series for which to get axis
+ * @param {string} setName The name of the series for which to get axis
* properties, e.g. 'Y1'.
- * @return { Object } The axis properties.
+ * @return {Object} The axis properties.
*/
Dygraph.prototype.axisPropertiesForSeries = function(series) {
// TODO(danvk): handle errors.
/**
* 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.
+ * @param {string} str An x value.
* @private
*/
Dygraph.prototype.detectTypeFromString_ = function(str) {
Dygraph.prototype.setXAxisOptions_ = function(isDate) {
if (isDate) {
this.attrs_.xValueParser = Dygraph.dateParser;
- this.attrs_.axes.x.valueFormatter = Dygraph.dateString_;
+ this.attrs_.axes.x.valueFormatter = Dygraph.dateValueFormatter;
this.attrs_.axes.x.ticker = Dygraph.dateTicker;
- this.attrs_.axes.x.axisLabelFormatter = Dygraph.dateAxisFormatter;
+ this.attrs_.axes.x.axisLabelFormatter = Dygraph.dateAxisLabelFormatter;
} else {
/** @private (shut up, jsdoc!) */
this.attrs_.xValueParser = function(x) { return parseFloat(x); };
// 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.numericLinearTicks;
+ this.attrs_.axes.x.ticker = Dygraph.numericTicks;
this.attrs_.axes.x.axisLabelFormatter = this.attrs_.axes.x.valueFormatter;
}
};
/**
- * Parses the value as a floating point number. This is like the parseFloat()
- * built-in, but with a few differences:
- * - the empty string is parsed as null, rather than NaN.
- * - if the string cannot be parsed at all, an error is logged.
- * If the string can't be parsed, this method returns null.
- * @param {String} x The string to be parsed
- * @param {Number} opt_line_no The line number from which the string comes.
- * @param {String} opt_line The text of the line from which the string comes.
- * @private
- */
-
-// Parse the x as a float or return null if it's not a number.
-Dygraph.prototype.parseFloat_ = function(x, opt_line_no, opt_line) {
- var val = parseFloat(x);
- if (!isNaN(val)) return val;
-
- // Try to figure out what happeend.
- // If the value is the empty string, parse it as null.
- if (/^ *$/.test(x)) return null;
-
- // If it was actually "NaN", return it as NaN.
- if (/^ *nan *$/i.test(x)) return NaN;
-
- // Looks like a parsing error.
- var msg = "Unable to parse '" + x + "' as a number";
- if (opt_line !== null && opt_line_no !== null) {
- msg += " on line " + (1+opt_line_no) + " ('" + opt_line + "') of CSV.";
- }
- this.error(msg);
-
- return null;
-};
-
-/**
* @private
* Parses a string in a special csv format. We expect a csv file where each
* line is a date point, and the first field in each line is the date string.
// TODO(danvk): figure out an appropriate way to flag parse errors.
vals = inFields[j].split("/");
if (vals.length != 2) {
- this.error('Expected fractional "num/den" values in CSV data ' +
- "but found a value '" + inFields[j] + "' on line " +
- (1 + i) + " ('" + line + "') which is not of this form.");
+ console.error('Expected fractional "num/den" values in CSV data ' +
+ "but found a value '" + inFields[j] + "' on line " +
+ (1 + i) + " ('" + line + "') which is not of this form.");
fields[j] = [0, 0];
} else {
- fields[j] = [this.parseFloat_(vals[0], i, line),
- this.parseFloat_(vals[1], i, line)];
+ fields[j] = [Dygraph.parseFloat_(vals[0], i, line),
+ Dygraph.parseFloat_(vals[1], i, line)];
}
}
} else if (this.getBooleanOption("errorBars")) {
// If there are error bars, values are (value, stddev) pairs
if (inFields.length % 2 != 1) {
- this.error('Expected alternating (value, stdev.) pairs in CSV data ' +
- 'but line ' + (1 + i) + ' has an odd number of values (' +
- (inFields.length - 1) + "): '" + line + "'");
+ console.error('Expected alternating (value, stdev.) pairs in CSV data ' +
+ 'but line ' + (1 + i) + ' has an odd number of values (' +
+ (inFields.length - 1) + "): '" + line + "'");
}
for (j = 1; j < inFields.length; j += 2) {
- fields[(j + 1) / 2] = [this.parseFloat_(inFields[j], i, line),
- this.parseFloat_(inFields[j + 1], i, line)];
+ fields[(j + 1) / 2] = [Dygraph.parseFloat_(inFields[j], i, line),
+ Dygraph.parseFloat_(inFields[j + 1], i, line)];
}
} else if (this.getBooleanOption("customBars")) {
// Bars are a low;center;high tuple
} else {
vals = val.split(";");
if (vals.length == 3) {
- fields[j] = [ this.parseFloat_(vals[0], i, line),
- this.parseFloat_(vals[1], i, line),
- this.parseFloat_(vals[2], i, line) ];
+ fields[j] = [ Dygraph.parseFloat_(vals[0], i, line),
+ Dygraph.parseFloat_(vals[1], i, line),
+ Dygraph.parseFloat_(vals[2], i, line) ];
} else {
- this.warn('When using customBars, values must be either blank ' +
- 'or "low;center;high" tuples (got "' + val +
- '" on line ' + (1+i));
+ console.warn('When using customBars, values must be either blank ' +
+ 'or "low;center;high" tuples (got "' + val +
+ '" on line ' + (1+i));
}
}
}
} else {
// Values are just numbers
for (j = 1; j < inFields.length; j++) {
- fields[j] = this.parseFloat_(inFields[j], i, line);
+ fields[j] = Dygraph.parseFloat_(inFields[j], i, line);
}
}
if (ret.length > 0 && fields[0] < ret[ret.length - 1][0]) {
}
if (fields.length != expectedCols) {
- this.error("Number of columns in line " + i + " (" + fields.length +
- ") does not agree with number of labels (" + expectedCols +
- ") " + line);
+ console.error("Number of columns in line " + i + " (" + fields.length +
+ ") does not agree with number of labels (" + expectedCols +
+ ") " + line);
}
// If the user specified the 'labels' option and none of the cells of the
if (fields[j]) all_null = false;
}
if (all_null) {
- this.warn("The dygraphs 'labels' option is set, but the first row of " +
- "CSV data ('" + line + "') appears to also contain labels. " +
- "Will drop the CSV labels and use the option labels.");
+ console.warn("The dygraphs 'labels' option is set, but the first row " +
+ "of CSV data ('" + line + "') appears to also contain " +
+ "labels. Will drop the CSV labels and use the option " +
+ "labels.");
continue;
}
}
}
if (outOfOrder) {
- this.warn("CSV is out of order; order it correctly to speed loading.");
+ console.warn("CSV is out of order; order it correctly to speed loading.");
ret.sort(function(a,b) { return a[0] - b[0]; });
}
};
/**
- * @private
* The user has provided their data as a pre-packaged JS array. If the x values
* are numeric, this is the same as dygraphs' internal format. If the x values
* are dates, we need to convert them from Date objects to ms since epoch.
- * @param {[Object]} data
- * @return {[Object]} data with numeric x values.
+ * @param {!Array} data
+ * @return {Object} data with numeric x values.
+ * @private
*/
Dygraph.prototype.parseArray_ = function(data) {
// Peek at the first x value to see if it's numeric.
if (data.length === 0) {
- this.error("Can't plot empty data set");
+ console.error("Can't plot empty data set");
return null;
}
if (data[0].length === 0) {
- this.error("Data set cannot contain an empty row");
+ console.error("Data set cannot contain an empty row");
return null;
}
var i;
if (this.attr_("labels") === null) {
- this.warn("Using default labels. Set labels explicitly via 'labels' " +
- "in the options parameter");
+ console.warn("Using default labels. Set labels explicitly via 'labels' " +
+ "in the options parameter");
this.attrs_.labels = [ "X" ];
for (i = 1; i < data[0].length; i++) {
this.attrs_.labels.push("Y" + i); // Not user_attrs_.
} else {
var num_labels = this.attr_("labels");
if (num_labels.length != data[0].length) {
- this.error("Mismatch between number of labels (" + num_labels +
- ") and number of columns in array (" + data[0].length + ")");
+ console.error("Mismatch between number of labels (" + num_labels + ")" +
+ " and number of columns in array (" + data[0].length + ")");
return null;
}
}
if (Dygraph.isDateLike(data[0][0])) {
// Some intelligent defaults for a date x-axis.
- this.attrs_.axes.x.valueFormatter = Dygraph.dateString_;
+ this.attrs_.axes.x.valueFormatter = Dygraph.dateValueFormatter;
this.attrs_.axes.x.ticker = Dygraph.dateTicker;
- this.attrs_.axes.x.axisLabelFormatter = Dygraph.dateAxisFormatter;
+ this.attrs_.axes.x.axisLabelFormatter = Dygraph.dateAxisLabelFormatter;
// Assume they're all dates.
var parsedData = Dygraph.clone(data);
for (i = 0; i < data.length; i++) {
if (parsedData[i].length === 0) {
- this.error("Row " + (1 + i) + " of data is empty");
+ console.error("Row " + (1 + i) + " of data is empty");
return null;
}
if (parsedData[i][0] === null ||
typeof(parsedData[i][0].getTime) != 'function' ||
isNaN(parsedData[i][0].getTime())) {
- this.error("x value in row " + (1 + i) + " is not a Date");
+ console.error("x value in row " + (1 + i) + " is not a Date");
return null;
}
parsedData[i][0] = parsedData[i][0].getTime();
// Some intelligent defaults for a numeric x-axis.
/** @private (shut up, jsdoc!) */
this.attrs_.axes.x.valueFormatter = function(x) { return x; };
- this.attrs_.axes.x.ticker = Dygraph.numericLinearTicks;
+ this.attrs_.axes.x.ticker = Dygraph.numericTicks;
this.attrs_.axes.x.axisLabelFormatter = Dygraph.numberAxisLabelFormatter;
return data;
}
* number. All subsequent columns must be numbers. If there is a clear mismatch
* between this.xValueParser_ and the type of the first column, it will be
* fixed. Fills out rawData_.
- * @param {[Object]} data See above.
+ * @param {!google.visualization.DataTable} data See above.
* @private
*/
Dygraph.prototype.parseDataTable_ = function(data) {
var indepType = data.getColumnType(0);
if (indepType == 'date' || indepType == 'datetime') {
this.attrs_.xValueParser = Dygraph.dateParser;
- this.attrs_.axes.x.valueFormatter = Dygraph.dateString_;
+ this.attrs_.axes.x.valueFormatter = Dygraph.dateValueFormatter;
this.attrs_.axes.x.ticker = Dygraph.dateTicker;
- this.attrs_.axes.x.axisLabelFormatter = Dygraph.dateAxisFormatter;
+ this.attrs_.axes.x.axisLabelFormatter = Dygraph.dateAxisLabelFormatter;
} else if (indepType == 'number') {
this.attrs_.xValueParser = function(x) { return parseFloat(x); };
this.attrs_.axes.x.valueFormatter = function(x) { return x; };
- this.attrs_.axes.x.ticker = Dygraph.numericLinearTicks;
+ 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 + "')");
+ console.error("only 'date', 'datetime' and 'number' types are supported " +
+ "for column 1 of DataTable input (Got '" + indepType + "')");
return null;
}
}
hasAnnotations = true;
} else {
- this.error("Only 'number' is supported as a dependent type with Gviz." +
- " 'string' is only supported if displayAnnotations is true");
+ console.error("Only 'number' is supported as a dependent type with Gviz." +
+ " 'string' is only supported if displayAnnotations is true");
}
}
var row = [];
if (typeof(data.getValue(i, 0)) === 'undefined' ||
data.getValue(i, 0) === null) {
- this.warn("Ignoring row " + i +
- " of DataTable because of undefined or null first column.");
+ console.warn("Ignoring row " + i +
+ " of DataTable because of undefined or null first column.");
continue;
}
}
if (outOfOrder) {
- this.warn("DataTable is out of order; order it correctly to speed loading.");
+ console.warn("DataTable is out of order; order it correctly to speed loading.");
ret.sort(function(a,b) { return a[0] - b[0]; });
}
this.rawData_ = ret;
req.send(null);
}
} else {
- this.error("Unknown data format: " + (typeof data));
+ console.error("Unknown data format: " + (typeof data));
}
};
* There's a huge variety of options that can be passed to this method. For a
* full list, see http://dygraphs.com/options.html.
*
- * @param {Object} attrs The new properties and values
- * @param {Boolean} [block_redraw] Usually the chart is redrawn after every
- * call to updateOptions(). If you know better, you can pass true to explicitly
- * block the redraw. This can be useful for chaining updateOptions() calls,
- * avoiding the occasional infinite loop and preventing redraws when it's not
- * necessary (e.g. when updating a callback).
+ * @param {Object} input_attrs The new properties and values
+ * @param {boolean} block_redraw Usually the chart is redrawn after every
+ * call to updateOptions(). If you know better, you can pass true to
+ * explicitly block the redraw. This can be useful for chaining
+ * updateOptions() calls, avoiding the occasional infinite loop and
+ * preventing redraws when it's not necessary (e.g. when updating a
+ * callback).
*/
Dygraph.prototype.updateOptions = function(input_attrs, block_redraw) {
if (typeof(block_redraw) == 'undefined') block_redraw = false;
};
var map = function(opt, axis, new_opt) {
if (typeof(attrs[opt]) != 'undefined') {
- Dygraph.warn("Option " + opt + " is deprecated. Use the " +
+ console.warn("Option " + opt + " is deprecated. Use the " +
new_opt + " option for the " + axis + " axis instead. " +
"(e.g. { axes : { " + axis + " : { " + new_opt + " : ... } } } " +
"(see http://dygraphs.com/per-axis.html for more information.");
* This is far more efficient than destroying and re-instantiating a
* Dygraph, since it doesn't have to reparse the underlying data.
*
- * @param {Number} [width] Width (in pixels)
- * @param {Number} [height] Height (in pixels)
+ * @param {number} width Width (in pixels)
+ * @param {number} height Height (in pixels)
*/
Dygraph.prototype.resize = function(width, height) {
if (this.resize_lock) {
this.resize_lock = true;
if ((width === null) != (height === null)) {
- this.warn("Dygraph.resize() should be called with zero parameters or " +
- "two non-NULL parameters. Pretending it was zero.");
+ console.warn("Dygraph.resize() should be called with zero parameters or " +
+ "two non-NULL parameters. Pretending it was zero.");
width = height = null;
}
/**
* Adjusts the number of points in the rolling average. Updates the graph to
* reflect the new averaging period.
- * @param {Number} length Number of points over which to average the data.
+ * @param {number} length Number of points over which to average the data.
*/
Dygraph.prototype.adjustRoll = function(length) {
this.rollPeriod_ = length;
Dygraph.prototype.setVisibility = function(num, value) {
var x = this.visibility();
if (num < 0 || num >= x.length) {
- this.warn("invalid series number in setVisibility: " + num);
+ console.warn("invalid series number in setVisibility: " + num);
} else {
x[num] = value;
this.predraw_();
Dygraph.addAnnotationRule();
this.annotations_ = ann;
if (!this.layout_) {
- this.warn("Tried to setAnnotations before dygraph was ready. " +
- "Try setting them in a ready() block. See " +
- "dygraphs.com/tests/annotation.html");
+ console.warn("Tried to setAnnotations before dygraph was ready. " +
+ "Try setting them in a ready() block. See " +
+ "dygraphs.com/tests/annotation.html");
return;
}
}
}
- this.warn("Unable to add default annotation CSS rule; display may be off.");
+ console.warn("Unable to add default annotation CSS rule; display may be off.");
};