440 lines
17 KiB
JavaScript
440 lines
17 KiB
JavaScript
/**
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* jqPlot
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* Pure JavaScript plotting plugin using jQuery
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*
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* Version: 1.0.0b2_r792
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*
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* Copyright (c) 2009-2011 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: $.jqplot.DateAxisRenderer
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* A plugin for a jqPlot to render an axis as a series of date values.
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* This renderer has no options beyond those supplied by the <Axis> class.
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* It supplies it's own tick formatter, so the tickOptions.formatter option
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* should not be overridden.
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*
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* Thanks to Ken Synder for his enhanced Date instance methods which are
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* included with this code <http://kendsnyder.com/sandbox/date/>.
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*
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* To use this renderer, include the plugin in your source
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* > <script type="text/javascript" language="javascript" src="plugins/jqplot.dateAxisRenderer.js"></script>
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*
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* and supply the appropriate options to your plot
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*
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* > {axes:{xaxis:{renderer:$.jqplot.DateAxisRenderer}}}
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*
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* Dates can be passed into the axis in almost any recognizable value and
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* will be parsed. They will be rendered on the axis in the format
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* specified by tickOptions.formatString. e.g. tickOptions.formatString = '%Y-%m-%d'.
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*
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* Accecptable format codes
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* are:
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*
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* > Code Result Description
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* > == Years ==
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* > %Y 2008 Four-digit year
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* > %y 08 Two-digit year
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* > == Months ==
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* > %m 09 Two-digit month
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* > %#m 9 One or two-digit month
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* > %B September Full month name
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* > %b Sep Abbreviated month name
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* > == Days ==
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* > %d 05 Two-digit day of month
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* > %#d 5 One or two-digit day of month
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* > %e 5 One or two-digit day of month
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* > %A Sunday Full name of the day of the week
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* > %a Sun Abbreviated name of the day of the week
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* > %w 0 Number of the day of the week (0 = Sunday, 6 = Saturday)
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* > %o th The ordinal suffix string following the day of the month
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* > == Hours ==
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* > %H 23 Hours in 24-hour format (two digits)
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* > %#H 3 Hours in 24-hour integer format (one or two digits)
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* > %I 11 Hours in 12-hour format (two digits)
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* > %#I 3 Hours in 12-hour integer format (one or two digits)
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* > %p PM AM or PM
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* > == Minutes ==
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* > %M 09 Minutes (two digits)
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* > %#M 9 Minutes (one or two digits)
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* > == Seconds ==
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* > %S 02 Seconds (two digits)
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* > %#S 2 Seconds (one or two digits)
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* > %s 1206567625723 Unix timestamp (Seconds past 1970-01-01 00:00:00)
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* > == Milliseconds ==
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* > %N 008 Milliseconds (three digits)
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* > %#N 8 Milliseconds (one to three digits)
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* > == Timezone ==
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* > %O 360 difference in minutes between local time and GMT
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* > %Z Mountain Standard Time Name of timezone as reported by browser
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* > %G -06:00 Hours and minutes between GMT
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* > == Shortcuts ==
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* > %F 2008-03-26 %Y-%m-%d
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* > %T 05:06:30 %H:%M:%S
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* > %X 05:06:30 %H:%M:%S
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* > %x 03/26/08 %m/%d/%y
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* > %D 03/26/08 %m/%d/%y
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* > %#c Wed Mar 26 15:31:00 2008 %a %b %e %H:%M:%S %Y
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* > %v 3-Sep-2008 %e-%b-%Y
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* > %R 15:31 %H:%M
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* > %r 3:31:00 PM %I:%M:%S %p
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* > == Characters ==
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* > %n \n Newline
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* > %t \t Tab
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* > %% % Percent Symbol
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*/
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$.jqplot.DateAxisRenderer = function() {
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$.jqplot.LinearAxisRenderer.call(this);
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this.date = new $.jsDate();
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};
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$.jqplot.DateAxisRenderer.prototype = new $.jqplot.LinearAxisRenderer();
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$.jqplot.DateAxisRenderer.prototype.constructor = $.jqplot.DateAxisRenderer;
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$.jqplot.DateTickFormatter = function(format, val) {
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if (!format) {
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format = '%Y/%m/%d';
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}
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return $.jsDate.strftime(val, format);
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};
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$.jqplot.DateAxisRenderer.prototype.init = function(options){
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// prop: tickRenderer
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// A class of a rendering engine for creating the ticks labels displayed on the plot,
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// See <$.jqplot.AxisTickRenderer>.
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// this.tickRenderer = $.jqplot.AxisTickRenderer;
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// this.labelRenderer = $.jqplot.AxisLabelRenderer;
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this.tickOptions.formatter = $.jqplot.DateTickFormatter;
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this.daTickInterval = null;
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this._daTickInterval = null;
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$.extend(true, this, options);
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var db = this._dataBounds,
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stats,
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sum,
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s,
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d,
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pd,
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sd,
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intv;
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// Go through all the series attached to this axis and find
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// the min/max bounds for this axis.
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for (var i=0; i<this._series.length; i++) {
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stats = {intervals:[], frequencies:{}, sortedIntervals:[], min:null, max:null, mean:null};
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sum = 0;
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s = this._series[i];
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d = s.data;
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pd = s._plotData;
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sd = s._stackData;
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intv = 0;
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for (var j=0; j<d.length; j++) {
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if (this.name == 'xaxis' || this.name == 'x2axis') {
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d[j][0] = new $.jsDate(d[j][0]).getTime();
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pd[j][0] = new $.jsDate(d[j][0]).getTime();
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sd[j][0] = new $.jsDate(d[j][0]).getTime();
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if ((d[j][0] != null && d[j][0] < db.min) || db.min == null) {
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db.min = d[j][0];
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}
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if ((d[j][0] != null && d[j][0] > db.max) || db.max == null) {
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db.max = d[j][0];
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}
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if (j>0) {
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intv = Math.abs(d[j][0] - d[j-1][0]);
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stats.intervals.push(intv);
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if (stats.frequencies.hasOwnProperty(intv)) {
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stats.frequencies[intv] += 1;
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}
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else {
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stats.frequencies[intv] = 1;
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}
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}
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sum += intv;
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}
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else {
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d[j][1] = new $.jsDate(d[j][1]).getTime();
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pd[j][1] = new $.jsDate(d[j][1]).getTime();
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sd[j][1] = new $.jsDate(d[j][1]).getTime();
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if ((d[j][1] != null && d[j][1] < db.min) || db.min == null) {
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db.min = d[j][1];
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}
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if ((d[j][1] != null && d[j][1] > db.max) || db.max == null) {
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db.max = d[j][1];
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}
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if (j>0) {
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intv = Math.abs(d[j][1] - d[j-1][1]);
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stats.intervals.push(intv);
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if (stats.frequencies.hasOwnProperty(intv)) {
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stats.frequencies[intv] += 1;
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}
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else {
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stats.frequencies[intv] = 1;
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}
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}
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}
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sum += intv;
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}
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var tempf = 0,
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tempn=0;
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for (var n in stats.frequencies) {
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stats.sortedIntervals.push({interval:n, frequency:stats.frequencies[n]});
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}
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stats.sortedIntervals.sort(function(a, b){
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return b.frequency - a.frequency;
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});
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stats.min = $.jqplot.arrayMin(stats.intervals);
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stats.max = $.jqplot.arrayMax(stats.intervals);
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stats.mean = sum/d.length;
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this._intervalStats.push(stats);
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stats = sum = s = d = pd = sd = null;
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}
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db = null;
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};
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// called with scope of an axis
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$.jqplot.DateAxisRenderer.prototype.reset = function() {
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this.min = this._min;
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this.max = this._max;
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this.tickInterval = this._tickInterval;
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this.numberTicks = this._numberTicks;
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this.daTickInterval = this._daTickInterval;
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// this._ticks = this.__ticks;
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};
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$.jqplot.DateAxisRenderer.prototype.createTicks = function() {
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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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// databounds were set on axis initialization.
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var db = this._dataBounds;
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var iv = this._intervalStats;
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var dim, 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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// if we already have ticks, use them.
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// ticks must be in order of increasing value.
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min = ((this.min != null) ? new $.jsDate(this.min).getTime() : db.min);
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max = ((this.max != null) ? new $.jsDate(this.max).getTime() : db.max);
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var range = max - min;
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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 = new $.jsDate(ut[0]).getTime();
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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(t.value, 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 = new $.jsDate(ut).getTime();
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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(t.value, 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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this.daTickInterval = [(this.max - this.min) / (this.numberTicks - 1)/1000, 'seconds'];
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}
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////////
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// We don't have any ticks yet, let's make some!
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// Doing complete autoscaling, no user options specified
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////////
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else if (this.tickInterval == null && this.min == null && this.max == null && this.numberTicks == null) {
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var ret = $.jqplot.LinearTickGenerator(min, max);
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// calculate a padded max and min, points should be less than these
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// so that they aren't too close to the edges of the plot.
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// User can adjust how much padding is allowed with pad, padMin and PadMax options.
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var tumin = min + range*(this.padMin - 1);
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var tumax = max - range*(this.padMax - 1);
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if (min <=tumin || max >= tumax) {
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tumin = min - range*(this.padMin - 1);
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tumax = max + range*(this.padMax - 1);
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ret = $.jqplot.LinearTickGenerator(tumin, tumax);
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}
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this.min = ret[0];
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this.max = ret[1];
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this.numberTicks = ret[2];
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this.tickInterval = ret[4];
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this.daTickInterval = [this.tickInterval/1000, 'seconds'];
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for (var i=0; i<this.numberTicks; i++){
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var min = new $.jsDate(this.min);
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tt = min.add(i*this.daTickInterval[0], this.daTickInterval[1]).getTime();
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var t = new this.tickRenderer(this.tickOptions);
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// var t = new $.jqplot.AxisTickRenderer(this.tickOptions);
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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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}
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}
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////////
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// Some option(s) specified, work around that.
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////////
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else {
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if (name == 'xaxis' || name == 'x2axis') {
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dim = this._plotDimensions.width;
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}
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else {
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dim = this._plotDimensions.height;
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}
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// if min, max and number of ticks specified, user can't specify interval.
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if (this.min != null && this.max != null && this.numberTicks != null) {
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this.tickInterval = null;
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}
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// if user specified a tick interval, convert to usable.
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if (this.tickInterval != null)
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{
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// if interval is a number or can be converted to one, use it.
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// Assume it is in SECONDS!!!
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if (Number(this.tickInterval)) {
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this.daTickInterval = [Number(this.tickInterval), 'seconds'];
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}
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// else, parse out something we can build from.
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else if (typeof this.tickInterval == "string") {
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var parts = this.tickInterval.split(' ');
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if (parts.length == 1) {
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this.daTickInterval = [1, parts[0]];
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}
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else if (parts.length == 2) {
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this.daTickInterval = [parts[0], parts[1]];
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}
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}
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}
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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 = 24*60*60*500; // 1/2 day
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min -= adj;
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max += adj;
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}
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range = max - min;
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var optNumTicks = 2 + parseInt(Math.max(0, dim-100)/100, 10);
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// Here try to set ticks based on data spacing.
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// if (this.min == null && this.max == null && this.numberTicks == null && this.tickInterval == null) {
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// //
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// }
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var rmin, rmax;
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rmin = (this.min != null) ? new $.jsDate(this.min).getTime() : min - range/2*(this.padMin - 1);
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rmax = (this.max != null) ? new $.jsDate(this.max).getTime() : max + range/2*(this.padMax - 1);
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this.min = rmin;
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this.max = rmax;
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range = this.max - this.min;
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if (this.numberTicks == null){
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// if tickInterval is specified by user, we will ignore computed maximum.
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// max will be equal or greater to fit even # of ticks.
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if (this.daTickInterval != null) {
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var nc = new $.jsDate(this.max).diff(this.min, this.daTickInterval[1], true);
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this.numberTicks = Math.ceil(nc/this.daTickInterval[0]) +1;
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// this.max = new $.jsDate(this.min).add(this.numberTicks-1, this.daTickInterval[1]).getTime();
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this.max = new $.jsDate(this.min).add((this.numberTicks-1) * this.daTickInterval[0], this.daTickInterval[1]).getTime();
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}
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else if (dim > 200) {
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this.numberTicks = parseInt(3+(dim-200)/100, 10);
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}
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else {
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this.numberTicks = 2;
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}
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}
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if (this.daTickInterval == null) {
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this.daTickInterval = [range / (this.numberTicks-1)/1000, 'seconds'];
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}
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for (var i=0; i<this.numberTicks; i++){
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var min = new $.jsDate(this.min);
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tt = min.add(i*this.daTickInterval[0], this.daTickInterval[1]).getTime();
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var t = new this.tickRenderer(this.tickOptions);
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// var t = new $.jqplot.AxisTickRenderer(this.tickOptions);
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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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}
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}
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if (this._daTickInterval == null) {
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this._daTickInterval = this.daTickInterval;
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}
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};
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})(jQuery);
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