And error bars will be calculated automatically using a binomial distribution.
- For further documentation and examples, see http://www.danvk.org/dygraphs
+ For further documentation and examples, see http://dygraphs.com/
*/
* @private
*/
Dygraph.prototype.__init__ = function(div, file, attrs) {
+ // Hack for IE: if we're using excanvas and the document hasn't finished
+ // loading yet (and hence may not have initialized whatever it needs to
+ // initialize), then keep calling this routine periodically until it has.
+ if (/MSIE/.test(navigator.userAgent) && !window.opera &&
+ typeof(G_vmlCanvasManager) != 'undefined' &&
+ document.readyState != 'complete') {
+ var self = this;
+ setTimeout(function() { self.__init__(div, file, attrs) }, 100);
+ }
+
// Support two-argument constructor
if (attrs == null) { attrs = {}; }
this.is_initial_draw_ = true;
this.annotations_ = [];
+ // Zoomed indicators - These indicate when the graph has been zoomed and on what axis.
+ this.zoomed_x_ = false;
+ this.zoomed_y_ = false;
+
// Clear the div. This ensure that, if multiple dygraphs are passed the same
// 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";
+ div.style.width = (attrs.width || Dygraph.DEFAULT_WIDTH) + "px";
}
if (div.style.height == '') {
- div.style.height = attrs.height || Dygraph.DEFAULT_HEIGHT + "px";
+ div.style.height = (attrs.height || Dygraph.DEFAULT_HEIGHT) + "px";
}
this.width_ = parseInt(div.style.width, 10);
this.height_ = parseInt(div.style.height, 10);
this.start_();
};
+// axis is an optional parameter. Can be set to 'x' or 'y'.
+Dygraph.prototype.isZoomed = function(axis) {
+ if (axis == null) return this.zoomed_x_ || this.zoomed_y_;
+ if (axis == 'x') return this.zoomed_x_;
+ if (axis == 'y') return this.zoomed_y_;
+ throw "axis parameter to Dygraph.isZoomed must be missing, 'x' or 'y'.";
+};
+
Dygraph.prototype.attr_ = function(name, seriesName) {
if (seriesName &&
typeof(this.user_attrs_[seriesName]) != 'undefined' &&
var area = this.plotter_.area;
var div = this.attr_("labelsDiv");
- div.style.left = area.x + area.w - this.attr_("labelsDivWidth") + "px";
+ div.style.left = area.x + area.w - this.attr_("labelsDivWidth") - 1 + "px";
};
/**
* Create the text box to adjust the averaging period
- * @return {Object} The newly-created text box
* @private
*/
Dygraph.prototype.createRollInterface_ = function() {
- // Destroy any existing roller.
- if (this.roller_) this.graphDiv.removeChild(this.roller_);
+ // Create a roller if one doesn't exist already.
+ if (!this.roller_) {
+ this.roller_ = document.createElement("input");
+ this.roller_.type = "text";
+ this.roller_.style.display = "none";
+ this.graphDiv.appendChild(this.roller_);
+ }
+
+ var display = this.attr_('showRoller') ? 'block' : 'none';
- var display = this.attr_('showRoller') ? "block" : "none";
var textAttr = { "position": "absolute",
"zIndex": 10,
"top": (this.plotter_.area.h - 25) + "px",
"left": (this.plotter_.area.x + 1) + "px",
"display": display
};
- var roller = document.createElement("input");
- roller.type = "text";
- roller.size = "2";
- roller.value = this.rollPeriod_;
+ this.roller_.size = "2";
+ this.roller_.value = this.rollPeriod_;
for (var name in textAttr) {
if (textAttr.hasOwnProperty(name)) {
- roller.style[name] = textAttr[name];
+ this.roller_.style[name] = textAttr[name];
}
}
- var pa = this.graphDiv;
- pa.appendChild(roller);
var dygraph = this;
- roller.onchange = function() { dygraph.adjustRoll(roller.value); };
- return roller;
+ this.roller_.onchange = function() { dygraph.adjustRoll(dygraph.roller_.value); };
};
// These functions are taken from MochiKit.Signal
// Track the beginning of drag events
Dygraph.addEvent(this.mouseEventElement_, 'mousedown', function(event) {
+ // prevents mouse drags from selecting page text.
+ if (event.preventDefault) {
+ event.preventDefault(); // Firefox, Chrome, etc.
+ } else {
+ event.returnValue = false; // IE
+ event.cancelBubble = true;
+ }
+
px = Dygraph.findPosX(self.canvas_);
py = Dygraph.findPosY(self.canvas_);
dragStartX = getX(event);
*/
Dygraph.prototype.doZoomXDates_ = function(minDate, maxDate) {
this.dateWindow_ = [minDate, maxDate];
+ this.zoomed_x_ = true;
this.drawGraph_();
if (this.attr_("zoomCallback")) {
- var yRange = this.yAxisRange();
- this.attr_("zoomCallback")(minDate, maxDate, yRange[0], yRange[1]);
+ this.attr_("zoomCallback")(minDate, maxDate, this.yAxisRanges());
}
};
valueRanges.push([low[1], hi[1]]);
}
+ this.zoomed_y_ = true;
this.drawGraph_();
if (this.attr_("zoomCallback")) {
var xRange = this.xAxisRange();
- this.attr_("zoomCallback")(xRange[0], xRange[1], this.yAxisRanges());
+ var yRange = this.yAxisRange();
+ this.attr_("zoomCallback")(xRange[0], xRange[1], yRange[0], yRange[1]);
}
};
if (dirty) {
// Putting the drawing operation before the callback because it resets
// yAxisRange.
+ this.zoomed_x_ = false;
+ this.zoomed_y_ = false;
this.drawGraph_();
if (this.attr_("zoomCallback")) {
var minDate = this.rawData_[0][0];
var minDist = 1e+100;
var idx = -1;
for (var i = 0; i < points.length; i++) {
+ var point = points[i];
+ if (point == null) continue;
var dist = Math.abs(points[i].canvasx - canvasx);
if (dist > minDist) continue;
minDist = dist;
}
if (idx >= 0) lastx = points[idx].xval;
// Check that you can really highlight the last day's data
- if (canvasx > points[points.length-1].canvasx)
+ var last = points[points.length-1];
+ if (last != null && canvasx > last.canvasx)
lastx = points[points.length-1].xval;
// Extract the points we've selected
var px = this.lastx_;
if (px !== null && lastx != px) {
// only fire if the selected point has changed.
- this.attr_("highlightCallback")(event, lastx, this.selPoints_);
+ this.attr_("highlightCallback")(event, lastx, this.selPoints_, this.idxToRow_(idx));
}
}
};
/**
+ * Transforms layout_.points index into data row number.
+ * @param int layout_.points index
+ * @return int row number, or -1 if none could be found.
+ * @private
+ */
+Dygraph.prototype.idxToRow_ = function(idx) {
+ if (idx < 0) return -1;
+
+ for (var i in this.layout_.datasets) {
+ if (idx < this.layout_.datasets[i].length) {
+ return this.boundaryIds_[0][0]+idx;
+ }
+ idx -= this.layout_.datasets[i].length;
+ }
+ return -1;
+};
+
+/**
* Draw dots over the selectied points in the data series. This function
* takes care of cleanup of previously-drawn dots.
* @private
// The roller sits in the bottom left corner of the chart. We don't know where
// this will be until the options are available, so it's positioned here.
- this.roller_ = this.createRollInterface_();
+ this.createRollInterface_();
// Same thing applies for the labelsDiv. It's right edge should be flush with
// the right edge of the charting area (which may not be the same as the right
}
var seriesExtremes = this.extremeValues_(series);
- extremes[seriesName] = seriesExtremes;
- var thisMinY = seriesExtremes[0];
- var thisMaxY = seriesExtremes[1];
- if (minY === null || (thisMinY != null && thisMinY < minY)) minY = thisMinY;
- if (maxY === null || (thisMaxY != null && thisMaxY > maxY)) maxY = thisMaxY;
if (bars) {
for (var j=0; j<series.length; j++) {
// If one data set has a NaN, let all subsequent stacked
// sets inherit the NaN -- only start at 0 for the first set.
var x = series[j][0];
- if (cumulative_y[x] === undefined)
+ if (cumulative_y[x] === undefined) {
cumulative_y[x] = 0;
+ }
actual_y = series[j][1];
cumulative_y[x] += actual_y;
series[j] = [x, cumulative_y[x]]
- if (!maxY || cumulative_y[x] > maxY)
- maxY = cumulative_y[x];
+ if (cumulative_y[x] > seriesExtremes[1]) {
+ seriesExtremes[1] = cumulative_y[x];
+ }
+ if (cumulative_y[x] < seriesExtremes[0]) {
+ seriesExtremes[0] = cumulative_y[x];
+ }
}
}
+ extremes[seriesName] = seriesExtremes;
datasets[i] = series;
}
* indices are into the axes_ array.
*/
Dygraph.prototype.computeYAxes_ = function() {
+ var valueWindow;
+ if (this.axes_ != undefined) {
+ // Preserve valueWindow settings.
+ valueWindow = [];
+ for (var index = 0; index < this.axes_.length; index++) {
+ valueWindow.push(this.axes_[index].valueWindow);
+ }
+ }
+
this.axes_ = [{}]; // always have at least one y-axis.
this.seriesToAxisMap_ = {};
// Get a list of series names.
var labels = this.attr_("labels");
- var series = [];
+ var series = {};
for (var i = 1; i < labels.length; i++) series[labels[i]] = (i - 1);
// all options which could be applied per-axis:
this.seriesToAxisMap_[seriesName] = idx;
}
}
+
+ // Now we remove series from seriesToAxisMap_ which are not visible. We do
+ // this last so that hiding the first series doesn't destroy the axis
+ // properties of the primary axis.
+ var seriesToAxisFiltered = {};
+ var vis = this.visibility();
+ for (var i = 1; i < labels.length; i++) {
+ var s = labels[i];
+ if (vis[i - 1]) seriesToAxisFiltered[s] = this.seriesToAxisMap_[s];
+ }
+ this.seriesToAxisMap_ = seriesToAxisFiltered;
+
+ if (valueWindow != undefined) {
+ // Restore valueWindow settings.
+ for (var index = 0; index < valueWindow.length; index++) {
+ this.axes_[index].valueWindow = valueWindow[index];
+ }
+ }
};
/**
// This is a user-set value range for this axis.
axis.computedValueRange = [axis.valueRange[0], axis.valueRange[1]];
} else {
- // Calcuate the extremes of extremes.
+ // Calculate the extremes of extremes.
var series = seriesForAxis[i];
var minY = Infinity; // extremes[series[0]][0];
var maxY = -Infinity; // extremes[series[0]][1];
// Parse the x as a float or return null if it's not a number.
var parseFloatOrNull = function(x) {
var val = parseFloat(x);
- return isNaN(val) ? null : val;
+ // isFinite() returns false for NaN and +/-Infinity.
+ return isFinite(val) ? val : null;
};
var xParser;
if (ret.length > 0 && row[0] < ret[ret.length - 1][0]) {
outOfOrder = true;
}
+
+ // Strip out infinities, which give dygraphs problems later on.
+ for (var j = 0; j < row.length; j++) {
+ if (!isFinite(row[j])) row[j] = null;
+ }
ret.push(row);
}
*/
Dygraph.prototype.setVisibility = function(num, value) {
var x = this.visibility();
- if (num < 0 && num >= x.length) {
+ if (num < 0 || num >= x.length) {
this.warn("invalid series number in setVisibility: " + num);
} else {
x[num] = value;
Dygraph.addAnnotationRule = function() {
if (Dygraph.addedAnnotationCSS) return;
- var mysheet;
- if (document.styleSheets.length > 0) {
- mysheet = document.styleSheets[0];
- } else {
- var styleSheetElement = document.createElement("style");
- styleSheetElement.type = "text/css";
- document.getElementsByTagName("head")[0].appendChild(styleSheetElement);
- for(i = 0; i < document.styleSheets.length; i++) {
- if (document.styleSheets[i].disabled) continue;
- mysheet = document.styleSheets[i];
- }
- }
-
var rule = "border: 1px solid black; " +
"background-color: white; " +
"text-align: center;";
- if (mysheet.insertRule) { // Firefox
- var idx = mysheet.cssRules ? mysheet.cssRules.length : 0;
- mysheet.insertRule(".dygraphDefaultAnnotation { " + rule + " }", idx);
- } else if (mysheet.addRule) { // IE
- mysheet.addRule(".dygraphDefaultAnnotation", rule);
+
+ var styleSheetElement = document.createElement("style");
+ styleSheetElement.type = "text/css";
+ document.getElementsByTagName("head")[0].appendChild(styleSheetElement);
+
+ // Find the first style sheet that we can access.
+ // We may not add a rule to a style sheet from another domain for security
+ // reasons. This sometimes comes up when using gviz, since the Google gviz JS
+ // adds its own style sheets from google.com.
+ for (var i = 0; i < document.styleSheets.length; i++) {
+ if (document.styleSheets[i].disabled) continue;
+ var mysheet = document.styleSheets[i];
+ try {
+ if (mysheet.insertRule) { // Firefox
+ var idx = mysheet.cssRules ? mysheet.cssRules.length : 0;
+ mysheet.insertRule(".dygraphDefaultAnnotation { " + rule + " }", idx);
+ } else if (mysheet.addRule) { // IE
+ mysheet.addRule(".dygraphDefaultAnnotation", rule);
+ }
+ Dygraph.addedAnnotationCSS = true;
+ return;
+ } catch(err) {
+ // Was likely a security exception.
+ }
}
- Dygraph.addedAnnotationCSS = true;
+ this.warn("Unable to add default annotation CSS rule; display may be off.");
}
/**
}
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);
}
projects / dygraphs.git / blobdiff