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534 lines
21 KiB
534 lines
21 KiB
2 years ago
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/**
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* jqPlot
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* Pure JavaScript plotting plugin using jQuery
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*
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* Version: 1.0.8
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* Revision: 1250
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*
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* Copyright (c) 2009-2013 Chris Leonello
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* jqPlot is currently available for use in all personal or commercial projects
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* under both the MIT (http://www.opensource.org/licenses/mit-license.php) and GPL
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* version 2.0 (http://www.gnu.org/licenses/gpl-2.0.html) licenses. This means that you can
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* choose the license that best suits your project and use it accordingly.
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*
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* Although not required, the author would appreciate an email letting him
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* know of any substantial use of jqPlot. You can reach the author at:
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* chris at jqplot dot com or see http://www.jqplot.com/info.php .
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*
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* If you are feeling kind and generous, consider supporting the project by
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* making a donation at: http://www.jqplot.com/donate.php .
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*
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* sprintf functions contained in jqplot.sprintf.js by Ash Searle:
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*
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* version 2007.04.27
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* author Ash Searle
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* http://hexmen.com/blog/2007/03/printf-sprintf/
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* http://hexmen.com/js/sprintf.js
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* The author (Ash Searle) has placed this code in the public domain:
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* "This code is unrestricted: you are free to use it however you like."
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*
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*/
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(function($) {
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/**
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* class: $.jqplot.LogAxisRenderer
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* A plugin for a jqPlot to render a logarithmic axis.
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*
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* To use this renderer, include the plugin in your source
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* > <script type="text/javascript" language="javascript" src="plugins/jqplot.logAxisRenderer.js"></script>
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*
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* and supply the appropriate options to your plot
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*
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* > {axes:{xaxis:{renderer:$.jqplot.LogAxisRenderer}}}
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**/
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$.jqplot.LogAxisRenderer = function() {
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$.jqplot.LinearAxisRenderer.call(this);
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// prop: axisDefaults
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// Default properties which will be applied directly to the series.
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//
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// Group: Properties
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//
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// Properties
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//
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// base - the logarithmic base, commonly 2, 10 or Math.E
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// tickDistribution - Deprecated. "power" distribution of ticks
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// always used. Option has no effect.
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this.axisDefaults = {
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base : 10,
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tickDistribution :'power'
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};
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};
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$.jqplot.LogAxisRenderer.prototype = new $.jqplot.LinearAxisRenderer();
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$.jqplot.LogAxisRenderer.prototype.constructor = $.jqplot.LogAxisRenderer;
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$.jqplot.LogAxisRenderer.prototype.init = function(options) {
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// prop: drawBaseline
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// True to draw the axis baseline.
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this.drawBaseline = true;
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// prop: minorTicks
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// Number of ticks to add between "major" ticks.
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// Major ticks are ticks supplied by user or auto computed.
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// Minor ticks cannot be created by user.
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this.minorTicks = 'auto';
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this._scalefact = 1.0;
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$.extend(true, this, options);
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this._autoFormatString = '%d';
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this._overrideFormatString = false;
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for (var d in this.renderer.axisDefaults) {
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if (this[d] == null) {
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this[d] = this.renderer.axisDefaults[d];
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}
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}
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this.resetDataBounds();
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};
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$.jqplot.LogAxisRenderer.prototype.createTicks = function(plot) {
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// we're are operating on an axis here
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var ticks = this._ticks;
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var userTicks = this.ticks;
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var name = this.name;
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var db = this._dataBounds;
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var dim = (this.name.charAt(0) === 'x') ? this._plotDimensions.width : this._plotDimensions.height;
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var interval;
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var min, max;
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var pos1, pos2;
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var tt, i;
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var threshold = 30;
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// For some reason scalefactor is screwing up ticks.
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this._scalefact = (Math.max(dim, threshold+1) - threshold)/300;
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// if we already have ticks, use them.
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// ticks must be in order of increasing value.
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if (userTicks.length) {
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// ticks could be 1D or 2D array of [val, val, ,,,] or [[val, label], [val, label], ...] or mixed
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for (i=0; i<userTicks.length; i++){
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var ut = userTicks[i];
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var t = new this.tickRenderer(this.tickOptions);
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if (ut.constructor == Array) {
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t.value = ut[0];
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t.label = ut[1];
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if (!this.showTicks) {
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t.showLabel = false;
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t.showMark = false;
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}
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else if (!this.showTickMarks) {
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t.showMark = false;
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}
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t.setTick(ut[0], this.name);
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this._ticks.push(t);
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}
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else if ($.isPlainObject(ut)) {
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$.extend(true, t, ut);
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t.axis = this.name;
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this._ticks.push(t);
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}
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else {
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t.value = ut;
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if (!this.showTicks) {
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t.showLabel = false;
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t.showMark = false;
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}
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else if (!this.showTickMarks) {
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t.showMark = false;
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}
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t.setTick(ut, this.name);
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this._ticks.push(t);
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}
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}
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this.numberTicks = userTicks.length;
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this.min = this._ticks[0].value;
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this.max = this._ticks[this.numberTicks-1].value;
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}
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// we don't have any ticks yet, let's make some!
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else if (this.min == null && this.max == null) {
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min = db.min * (2 - this.padMin);
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max = db.max * this.padMax;
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// if min and max are same, space them out a bit
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if (min == max) {
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var adj = 0.05;
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min = min*(1-adj);
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max = max*(1+adj);
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}
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// perform some checks
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if (this.min != null && this.min <= 0) {
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throw new Error("Log axis minimum must be greater than 0");
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}
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if (this.max != null && this.max <= 0) {
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throw new Error("Log axis maximum must be greater than 0");
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}
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function findCeil (val) {
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var order = Math.pow(10, Math.floor(Math.log(val)/Math.LN10));
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return Math.ceil(val/order) * order;
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}
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function findFloor(val) {
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var order = Math.pow(10, Math.floor(Math.log(val)/Math.LN10));
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return Math.floor(val/order) * order;
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}
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// var range = max - min;
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var rmin, rmax;
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// for power distribution, open up range to get a nice power of axis.renderer.base.
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// power distribution won't respect the user's min/max settings.
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rmin = Math.pow(this.base, Math.floor(Math.log(min)/Math.log(this.base)));
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rmax = Math.pow(this.base, Math.ceil(Math.log(max)/Math.log(this.base)));
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// // if min and max are same, space them out a bit
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// if (rmin === rmax) {
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// var adj = 0.05;
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// rmin = rmin*(1-adj);
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// rmax = rmax*(1+adj);
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// }
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// Handle case where a data value was zero
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if (rmin === 0) {
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rmin = 1;
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}
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var order = Math.round(Math.log(rmin)/Math.LN10);
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if (this.tickOptions == null || !this.tickOptions.formatString) {
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this._overrideFormatString = true;
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}
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this.min = rmin;
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this.max = rmax;
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var range = this.max - this.min;
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var minorTicks = (this.minorTicks === 'auto') ? 0 : this.minorTicks;
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var numberTicks;
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if (this.numberTicks == null){
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if (dim > 140) {
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numberTicks = Math.round(Math.log(this.max/this.min)/Math.log(this.base) + 1);
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if (numberTicks < 2) {
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numberTicks = 2;
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}
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if (minorTicks === 0) {
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var temp = dim/(numberTicks - 1);
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if (temp < 100) {
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minorTicks = 0;
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}
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else if (temp < 190) {
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minorTicks = 1;
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}
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else if (temp < 250) {
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minorTicks = 3;
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}
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else if (temp < 600) {
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minorTicks = 4;
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}
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else {
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minorTicks = 9;
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}
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}
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}
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else {
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numberTicks = 2;
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if (minorTicks === 0) {
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minorTicks = 1;
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}
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minorTicks = 0;
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}
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}
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else {
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numberTicks = this.numberTicks;
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}
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if (order >= 0 && minorTicks !== 3) {
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this._autoFormatString = '%d';
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}
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// Adjust format string for case with 3 ticks where we'll have like 1, 2.5, 5, 7.5, 10
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else if (order <= 0 && minorTicks === 3) {
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var temp = -(order - 1);
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this._autoFormatString = '%.'+ Math.abs(order-1) + 'f';
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}
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// Adjust format string for values less than 1.
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else if (order < 0) {
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var temp = -order;
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this._autoFormatString = '%.'+ Math.abs(order) + 'f';
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}
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else {
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this._autoFormatString = '%d';
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}
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var to, t, val, tt1, spread, interval;
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for (var i=0; i<numberTicks; i++){
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tt = Math.pow(this.base, i - numberTicks + 1) * this.max;
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t = new this.tickRenderer(this.tickOptions);
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if (this._overrideFormatString) {
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t.formatString = this._autoFormatString;
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}
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if (!this.showTicks) {
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t.showLabel = false;
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t.showMark = false;
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}
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else if (!this.showTickMarks) {
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t.showMark = false;
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}
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t.setTick(tt, this.name);
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this._ticks.push(t);
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if (minorTicks && i<numberTicks-1) {
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tt1 = Math.pow(this.base, i - numberTicks + 2) * this.max;
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spread = tt1 - tt;
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interval = tt1 / (minorTicks+1);
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for (var j=minorTicks-1; j>=0; j--) {
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val = tt1-interval*(j+1);
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t = new this.tickRenderer(this.tickOptions);
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if (this._overrideFormatString && this._autoFormatString != '') {
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t.formatString = this._autoFormatString;
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}
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if (!this.showTicks) {
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t.showLabel = false;
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t.showMark = false;
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}
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else if (!this.showTickMarks) {
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t.showMark = false;
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}
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t.setTick(val, this.name);
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this._ticks.push(t);
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}
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}
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}
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}
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// min and max are set as would be the case with zooming
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else if (this.min != null && this.max != null) {
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var opts = $.extend(true, {}, this.tickOptions, {name: this.name, value: null});
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var nt, ti;
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// don't have an interval yet, pick one that gives the most
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// "round" ticks we can get.
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if (this.numberTicks == null && this.tickInterval == null) {
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// var threshold = 30;
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var tdim = Math.max(dim, threshold+1);
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var nttarget = Math.ceil((tdim-threshold)/35 + 1);
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var ret = $.jqplot.LinearTickGenerator.bestConstrainedInterval(this.min, this.max, nttarget);
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this._autoFormatString = ret[3];
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nt = ret[2];
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ti = ret[4];
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for (var i=0; i<nt; i++) {
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opts.value = this.min + i * ti;
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t = new this.tickRenderer(opts);
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if (this._overrideFormatString && this._autoFormatString != '') {
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t.formatString = this._autoFormatString;
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}
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if (!this.showTicks) {
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t.showLabel = false;
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t.showMark = false;
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}
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else if (!this.showTickMarks) {
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t.showMark = false;
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}
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this._ticks.push(t);
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}
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}
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// for loose zoom, number ticks and interval are also set.
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else if (this.numberTicks != null && this.tickInterval != null) {
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nt = this.numberTicks;
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for (var i=0; i<nt; i++) {
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opts.value = this.min + i * this.tickInterval;
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t = new this.tickRenderer(opts);
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if (this._overrideFormatString && this._autoFormatString != '') {
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t.formatString = this._autoFormatString;
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}
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if (!this.showTicks) {
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t.showLabel = false;
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t.showMark = false;
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}
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else if (!this.showTickMarks) {
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t.showMark = false;
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}
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this._ticks.push(t);
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}
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}
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||
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}
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||
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};
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$.jqplot.LogAxisRenderer.prototype.pack = function(pos, offsets) {
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var lb = parseInt(this.base, 10);
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var ticks = this._ticks;
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|
|
var trans = function (v) { return Math.log(v)/Math.log(lb); };
|
||
|
|
var invtrans = function (v) { return Math.pow(Math.E, (Math.log(lb)*v)); };
|
||
|
|
var max = trans(this.max);
|
||
|
|
var min = trans(this.min);
|
||
|
|
var offmax = offsets.max;
|
||
|
|
var offmin = offsets.min;
|
||
|
|
var lshow = (this._label == null) ? false : this._label.show;
|
||
|
|
|
||
|
|
for (var p in pos) {
|
||
|
|
this._elem.css(p, pos[p]);
|
||
|
|
}
|
||
|
|
|
||
|
|
this._offsets = offsets;
|
||
|
|
// pixellength will be + for x axes and - for y axes becasue pixels always measured from top left.
|
||
|
|
var pixellength = offmax - offmin;
|
||
|
|
var unitlength = max - min;
|
||
|
|
|
||
|
|
// point to unit and unit to point conversions references to Plot DOM element top left corner.
|
||
|
|
this.p2u = function(p){
|
||
|
|
return invtrans((p - offmin) * unitlength / pixellength + min);
|
||
|
|
};
|
||
|
|
|
||
|
|
this.u2p = function(u){
|
||
|
|
return (trans(u) - min) * pixellength / unitlength + offmin;
|
||
|
|
};
|
||
|
|
|
||
|
|
if (this.name == 'xaxis' || this.name == 'x2axis'){
|
||
|
|
this.series_u2p = function(u){
|
||
|
|
return (trans(u) - min) * pixellength / unitlength;
|
||
|
|
};
|
||
|
|
this.series_p2u = function(p){
|
||
|
|
return invtrans(p * unitlength / pixellength + min);
|
||
|
|
};
|
||
|
|
}
|
||
|
|
// yaxis is max at top of canvas.
|
||
|
|
else {
|
||
|
|
this.series_u2p = function(u){
|
||
|
|
return (trans(u) - max) * pixellength / unitlength;
|
||
|
|
};
|
||
|
|
this.series_p2u = function(p){
|
||
|
|
return invtrans(p * unitlength / pixellength + max);
|
||
|
|
};
|
||
|
|
}
|
||
|
|
|
||
|
|
if (this.show) {
|
||
|
|
if (this.name == 'xaxis' || this.name == 'x2axis') {
|
||
|
|
for (var i=0; i<ticks.length; i++) {
|
||
|
|
var t = ticks[i];
|
||
|
|
if (t.show && t.showLabel) {
|
||
|
|
var shim;
|
||
|
|
|
||
|
|
if (t.constructor == $.jqplot.CanvasAxisTickRenderer && t.angle) {
|
||
|
|
switch (t.labelPosition) {
|
||
|
|
case 'auto':
|
||
|
|
// position at end
|
||
|
|
if (t.angle < 0) {
|
||
|
|
shim = -t.getWidth() + t._textRenderer.height * Math.sin(-t._textRenderer.angle) / 2;
|
||
|
|
}
|
||
|
|
// position at start
|
||
|
|
else {
|
||
|
|
shim = -t._textRenderer.height * Math.sin(t._textRenderer.angle) / 2;
|
||
|
|
}
|
||
|
|
break;
|
||
|
|
case 'end':
|
||
|
|
shim = -t.getWidth() + t._textRenderer.height * Math.sin(-t._textRenderer.angle) / 2;
|
||
|
|
break;
|
||
|
|
case 'start':
|
||
|
|
shim = -t._textRenderer.height * Math.sin(t._textRenderer.angle) / 2;
|
||
|
|
break;
|
||
|
|
case 'middle':
|
||
|
|
shim = -t.getWidth()/2 + t._textRenderer.height * Math.sin(-t._textRenderer.angle) / 2;
|
||
|
|
break;
|
||
|
|
default:
|
||
|
|
shim = -t.getWidth()/2 + t._textRenderer.height * Math.sin(-t._textRenderer.angle) / 2;
|
||
|
|
break;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
else {
|
||
|
|
shim = -t.getWidth()/2;
|
||
|
|
}
|
||
|
|
// var shim = t.getWidth()/2;
|
||
|
|
var val = this.u2p(t.value) + shim + 'px';
|
||
|
|
t._elem.css('left', val);
|
||
|
|
t.pack();
|
||
|
|
}
|
||
|
|
}
|
||
|
|
if (lshow) {
|
||
|
|
var w = this._label._elem.outerWidth(true);
|
||
|
|
this._label._elem.css('left', offmin + pixellength/2 - w/2 + 'px');
|
||
|
|
if (this.name == 'xaxis') {
|
||
|
|
this._label._elem.css('bottom', '0px');
|
||
|
|
}
|
||
|
|
else {
|
||
|
|
this._label._elem.css('top', '0px');
|
||
|
|
}
|
||
|
|
this._label.pack();
|
||
|
|
}
|
||
|
|
}
|
||
|
|
else {
|
||
|
|
for (var i=0; i<ticks.length; i++) {
|
||
|
|
var t = ticks[i];
|
||
|
|
if (t.show && t.showLabel) {
|
||
|
|
var shim;
|
||
|
|
if (t.constructor == $.jqplot.CanvasAxisTickRenderer && t.angle) {
|
||
|
|
switch (t.labelPosition) {
|
||
|
|
case 'auto':
|
||
|
|
// position at end
|
||
|
|
case 'end':
|
||
|
|
if (t.angle < 0) {
|
||
|
|
shim = -t._textRenderer.height * Math.cos(-t._textRenderer.angle) / 2;
|
||
|
|
}
|
||
|
|
else {
|
||
|
|
shim = -t.getHeight() + t._textRenderer.height * Math.cos(t._textRenderer.angle) / 2;
|
||
|
|
}
|
||
|
|
break;
|
||
|
|
case 'start':
|
||
|
|
if (t.angle > 0) {
|
||
|
|
shim = -t._textRenderer.height * Math.cos(-t._textRenderer.angle) / 2;
|
||
|
|
}
|
||
|
|
else {
|
||
|
|
shim = -t.getHeight() + t._textRenderer.height * Math.cos(t._textRenderer.angle) / 2;
|
||
|
|
}
|
||
|
|
break;
|
||
|
|
case 'middle':
|
||
|
|
// if (t.angle > 0) {
|
||
|
|
// shim = -t.getHeight()/2 + t._textRenderer.height * Math.sin(-t._textRenderer.angle) / 2;
|
||
|
|
// }
|
||
|
|
// else {
|
||
|
|
// shim = -t.getHeight()/2 - t._textRenderer.height * Math.sin(t._textRenderer.angle) / 2;
|
||
|
|
// }
|
||
|
|
shim = -t.getHeight()/2;
|
||
|
|
break;
|
||
|
|
default:
|
||
|
|
shim = -t.getHeight()/2;
|
||
|
|
break;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
else {
|
||
|
|
shim = -t.getHeight()/2;
|
||
|
|
}
|
||
|
|
|
||
|
|
var val = this.u2p(t.value) + shim + 'px';
|
||
|
|
t._elem.css('top', val);
|
||
|
|
t.pack();
|
||
|
|
}
|
||
|
|
}
|
||
|
|
if (lshow) {
|
||
|
|
var h = this._label._elem.outerHeight(true);
|
||
|
|
this._label._elem.css('top', offmax - pixellength/2 - h/2 + 'px');
|
||
|
|
if (this.name == 'yaxis') {
|
||
|
|
this._label._elem.css('left', '0px');
|
||
|
|
}
|
||
|
|
else {
|
||
|
|
this._label._elem.css('right', '0px');
|
||
|
|
}
|
||
|
|
this._label.pack();
|
||
|
|
}
|
||
|
|
}
|
||
|
|
}
|
||
|
|
};
|
||
|
|
})(jQuery);
|