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Edit File: jqplot.dateAxisRenderer.js

/**
 * jqPlot
 * Pure JavaScript plotting plugin using jQuery
 *
 * Version: 1.0.9
 * Revision: dff2f04
 *
 * Copyright (c) 2009-2016 Chris Leonello
 * jqPlot is currently available for use in all personal or commercial projects 
 * under both the MIT (http://www.opensource.org/licenses/mit-license.php) and GPL 
 * version 2.0 (http://www.gnu.org/licenses/gpl-2.0.html) licenses. This means that you can 
 * choose the license that best suits your project and use it accordingly. 
 *
 * Although not required, the author would appreciate an email letting him 
 * know of any substantial use of jqPlot.  You can reach the author at: 
 * chris at jqplot dot com or see http://www.jqplot.com/info.php .
 *
 * If you are feeling kind and generous, consider supporting the project by
 * making a donation at: http://www.jqplot.com/donate.php .
 *
 * sprintf functions contained in jqplot.sprintf.js by Ash Searle:
 *
 *     version 2007.04.27
 *     author Ash Searle
 *     http://hexmen.com/blog/2007/03/printf-sprintf/
 *     http://hexmen.com/js/sprintf.js
 *     The author (Ash Searle) has placed this code in the public domain:
 *     "This code is unrestricted: you are free to use it however you like."
 * 
 */
(function($) {  
    /**
     * Class: $.jqplot.DateAxisRenderer
     * A plugin for a jqPlot to render an axis as a series of date values.
     * This renderer has no options beyond those supplied by the <Axis> class.
     * It supplies its own tick formatter, so the tickOptions.formatter option
     * should not be overridden.
     * 
     * Thanks to Ken Synder for his enhanced Date instance methods which are
     * included with this code <http://kendsnyder.com/sandbox/date/>.
     * 
     * To use this renderer, include the plugin in your source
     * > <script type="text/javascript" language="javascript" src="plugins/jqplot.dateAxisRenderer.js"></script>
     * 
     * and supply the appropriate options to your plot
     * 
     * > {axes:{xaxis:{renderer:$.jqplot.DateAxisRenderer}}}
     * 
     * Dates can be passed into the axis in almost any recognizable value and 
     * will be parsed.  They will be rendered on the axis in the format
     * specified by tickOptions.formatString.  e.g. tickOptions.formatString = '%Y-%m-%d'.
     * 
     * Accecptable format codes 
     * are:
     * 
     * > Code    Result                  Description
     * >             == Years ==
     * > %Y      2008                Four-digit year
     * > %y      08                  Two-digit year
     * >             == Months ==
     * > %m      09                  Two-digit month
     * > %#m     9                   One or two-digit month
     * > %B      September           Full month name
     * > %b      Sep                 Abbreviated month name
     * >             == Days ==
     * > %d      05                  Two-digit day of month
     * > %#d     5                   One or two-digit day of month
     * > %e      5                   One or two-digit day of month
     * > %A      Sunday              Full name of the day of the week
     * > %a      Sun                 Abbreviated name of the day of the week
     * > %w      0                   Number of the day of the week (0 = Sunday, 6 = Saturday)
     * > %o      th                  The ordinal suffix string following the day of the month
     * >             == Hours ==
     * > %H      23                  Hours in 24-hour format (two digits)
     * > %#H     3                   Hours in 24-hour integer format (one or two digits)
     * > %I      11                  Hours in 12-hour format (two digits)
     * > %#I     3                   Hours in 12-hour integer format (one or two digits)
     * > %p      PM                  AM or PM
     * >             == Minutes ==
     * > %M      09                  Minutes (two digits)
     * > %#M     9                   Minutes (one or two digits)
     * >             == Seconds ==
     * > %S      02                  Seconds (two digits)
     * > %#S     2                   Seconds (one or two digits)
     * > %s      1206567625723       Unix timestamp (Seconds past 1970-01-01 00:00:00)
     * >             == Milliseconds ==
     * > %N      008                 Milliseconds (three digits)
     * > %#N     8                   Milliseconds (one to three digits)
     * >             == Timezone ==
     * > %O      360                 difference in minutes between local time and GMT
     * > %Z      Mountain Standard Time  Name of timezone as reported by browser
     * > %G      -06:00              Hours and minutes between GMT
     * >             == Shortcuts ==
     * > %F      2008-03-26          %Y-%m-%d
     * > %T      05:06:30            %H:%M:%S
     * > %X      05:06:30            %H:%M:%S
     * > %x      03/26/08            %m/%d/%y
     * > %D      03/26/08            %m/%d/%y
     * > %#c     Wed Mar 26 15:31:00 2008  %a %b %e %H:%M:%S %Y
     * > %v      3-Sep-2008          %e-%b-%Y
     * > %R      15:31               %H:%M
     * > %r      3:31:00 PM          %I:%M:%S %p
     * >             == Characters ==
     * > %n      \n                  Newline
     * > %t      \t                  Tab
     * > %%      %                   Percent Symbol 
     */
    $.jqplot.DateAxisRenderer = function() {
        $.jqplot.LinearAxisRenderer.call(this);
        this.date = new $.jsDate();
    };

var second = 1000;
    var minute = 60 * second;
    var hour = 60 * minute;
    var day = 24 * hour;
    var week = 7 * day;

// these are less definitive
    var month = 30.4368499 * day;
    var year = 365.242199 * day;

var daysInMonths = [31,28,31,30,31,30,31,30,31,30,31,30];
    // array of consistent nice intervals.  Longer intervals
    // will depend on days in month, days in year, etc.
    var niceFormatStrings = ['%M:%S.%#N', '%M:%S.%#N', '%M:%S.%#N', '%M:%S', '%M:%S', '%M:%S', '%M:%S', '%H:%M:%S', '%H:%M:%S', '%H:%M', '%H:%M', '%H:%M', '%H:%M', '%H:%M', '%H:%M', '%a %H:%M', '%a %H:%M', '%b %e %H:%M', '%b %e %H:%M', '%b %e %H:%M', '%b %e %H:%M', '%v', '%v', '%v', '%v', '%v', '%v', '%v'];
    var niceIntervals = [0.1*second, 0.2*second, 0.5*second, second, 2*second, 5*second, 10*second, 15*second, 30*second, minute, 2*minute, 5*minute, 10*minute, 15*minute, 30*minute, hour, 2*hour, 4*hour, 6*hour, 8*hour, 12*hour, day, 2*day, 3*day, 4*day, 5*day, week, 2*week];

var niceMonthlyIntervals = [];

function bestDateInterval(min, max, titarget) {
        // iterate through niceIntervals to find one closest to titarget
        var badness = Number.MAX_VALUE;
        var temp, bestTi, bestfmt;
        for (var i=0, l=niceIntervals.length; i < l; i++) {
            temp = Math.abs(titarget - niceIntervals[i]);
            if (temp < badness) {
                badness = temp;
                bestTi = niceIntervals[i];
                bestfmt = niceFormatStrings[i];
            }
        }

return [bestTi, bestfmt];
    }
    
    $.jqplot.DateAxisRenderer.prototype = new $.jqplot.LinearAxisRenderer();
    $.jqplot.DateAxisRenderer.prototype.constructor = $.jqplot.DateAxisRenderer;
    
    $.jqplot.DateTickFormatter = function(format, val) {
        if (!format) {
            format = '%Y/%m/%d';
        }
        return $.jsDate.strftime(val, format);
    };
    
    $.jqplot.DateAxisRenderer.prototype.init = function(options){
        // prop: tickRenderer
        // A class of a rendering engine for creating the ticks labels displayed on the plot, 
        // See <$.jqplot.AxisTickRenderer>.
        // this.tickRenderer = $.jqplot.AxisTickRenderer;
        // this.labelRenderer = $.jqplot.AxisLabelRenderer;
        this.tickOptions.formatter = $.jqplot.DateTickFormatter;
        // prop: tickInset
        // Controls the amount to inset the first and last ticks from 
        // the edges of the grid, in multiples of the tick interval.
        // 0 is no inset, 0.5 is one half a tick interval, 1 is a full
        // tick interval, etc.
        this.tickInset = 0;
        // prop: drawBaseline
        // True to draw the axis baseline.
        this.drawBaseline = true;
        // prop: baselineWidth
        // width of the baseline in pixels.
        this.baselineWidth = null;
        // prop: baselineColor
        // CSS color spec for the baseline.
        this.baselineColor = null;
        this.daTickInterval = null;
        this._daTickInterval = null;
        
        $.extend(true, this, options);
        
        var db = this._dataBounds,
            stats, 
            sum,
            s,
            d,
            pd,
            sd,
            intv;
        
        // Go through all the series attached to this axis and find
        // the min/max bounds for this axis.
        for (var i=0; i<this._series.length; i++) {
            stats = {intervals:[], frequencies:{}, sortedIntervals:[], min:null, max:null, mean:null};
            sum = 0;
            s = this._series[i];
            d = s.data;
            pd = s._plotData;
            sd = s._stackData;
            intv = 0;
            
            for (var j=0; j<d.length; j++) { 
                if (this.name == 'xaxis' || this.name == 'x2axis') {
                    d[j][0] = new $.jsDate(d[j][0]).getTime();
                    pd[j][0] = new $.jsDate(pd[j][0]).getTime();
                    sd[j][0] = new $.jsDate(sd[j][0]).getTime();
                    if ((d[j][0] != null && d[j][0] < db.min) || db.min == null) {
                        db.min = d[j][0];
                    }
                    if ((d[j][0] != null && d[j][0] > db.max) || db.max == null) {
                        db.max = d[j][0];
                    }
                    if (j>0) {
                        intv = Math.abs(d[j][0] - d[j-1][0]);
                        stats.intervals.push(intv);
                        if (stats.frequencies.hasOwnProperty(intv)) {
                            stats.frequencies[intv] += 1;
                        }
                        else {
                            stats.frequencies[intv] = 1;
                        }
                    }
                    sum += intv;
                    
                }              
                else {
                    d[j][1] = new $.jsDate(d[j][1]).getTime();
                    pd[j][1] = new $.jsDate(pd[j][1]).getTime();
                    sd[j][1] = new $.jsDate(sd[j][1]).getTime();
                    if ((d[j][1] != null && d[j][1] < db.min) || db.min == null) {
                        db.min = d[j][1];
                    }
                    if ((d[j][1] != null && d[j][1] > db.max) || db.max == null) {
                        db.max = d[j][1];
                    }
                    if (j>0) {
                        intv = Math.abs(d[j][1] - d[j-1][1]);
                        stats.intervals.push(intv);
                        if (stats.frequencies.hasOwnProperty(intv)) {
                            stats.frequencies[intv] += 1;
                        }
                        else {
                            stats.frequencies[intv] = 1;
                        }
                    }
                }
                sum += intv;              
            }

if (s.renderer.bands) {
                if (s.renderer.bands.hiData.length) {
                    var bd = s.renderer.bands.hiData;
                    for (var j=0, l=bd.length; j < l; j++) {
                        if (this.name === 'xaxis' || this.name === 'x2axis') {
                            bd[j][0] = new $.jsDate(bd[j][0]).getTime();
                            if ((bd[j][0] != null && bd[j][0] > db.max) || db.max == null) {
                                db.max = bd[j][0];
                            }                        
                        }              
                        else {
                            bd[j][1] = new $.jsDate(bd[j][1]).getTime();
                            if ((bd[j][1] != null && bd[j][1] > db.max) || db.max == null) {
                                db.max = bd[j][1];
                            }
                        }
                    }
                }
                if (s.renderer.bands.lowData.length) {
                    var bd = s.renderer.bands.lowData;
                    for (var j=0, l=bd.length; j < l; j++) {
                        if (this.name === 'xaxis' || this.name === 'x2axis') {
                            bd[j][0] = new $.jsDate(bd[j][0]).getTime();
                            if ((bd[j][0] != null && bd[j][0] < db.min) || db.min == null) {
                                db.min = bd[j][0];
                            }                       
                        }              
                        else {
                            bd[j][1] = new $.jsDate(bd[j][1]).getTime();
                            if ((bd[j][1] != null && bd[j][1] < db.min) || db.min == null) {
                                db.min = bd[j][1];
                            }
                        }
                    }
                }
            }
            
            var tempf = 0,
                tempn=0;
            for (var n in stats.frequencies) {
                stats.sortedIntervals.push({interval:n, frequency:stats.frequencies[n]});
            }
            stats.sortedIntervals.sort(function(a, b){
                return b.frequency - a.frequency;
            });
            
            stats.min = $.jqplot.arrayMin(stats.intervals);
            stats.max = $.jqplot.arrayMax(stats.intervals);
            stats.mean = sum/d.length;
            this._intervalStats.push(stats);
            stats = sum = s = d = pd = sd = null;
        }
        db = null;
        
    };
    
    // called with scope of an axis
    $.jqplot.DateAxisRenderer.prototype.reset = function() {
        this.min = this._options.min;
        this.max = this._options.max;
        this.tickInterval = this._options.tickInterval;
        this.numberTicks = this._options.numberTicks;
        this._autoFormatString = '';
        if (this._overrideFormatString && this.tickOptions && this.tickOptions.formatString) {
            this.tickOptions.formatString = '';
        }
        this.daTickInterval = this._daTickInterval;
        // this._ticks = this.__ticks;
    };
    
    $.jqplot.DateAxisRenderer.prototype.createTicks = function(plot) {
        // we're are operating on an axis here
        var ticks = this._ticks;
        var userTicks = this.ticks;
        var name = this.name;
        // databounds were set on axis initialization.
        var db = this._dataBounds;
        var iv = this._intervalStats;
        var dim = (this.name.charAt(0) === 'x') ? this._plotDimensions.width : this._plotDimensions.height;
        var interval;
        var min, max;
        var pos1, pos2;
        var tt, i;
        var threshold = 30;
        var insetMult = 1;
        var daTickInterval = null;
        
        // if user specified a tick interval, convert to usable.
        if (this.tickInterval != null)
        {
            // if interval is a number or can be converted to one, use it.
            // Assume it is in SECONDS!!!
            if (Number(this.tickInterval)) {
                daTickInterval = [Number(this.tickInterval), 'seconds'];
            }
            // else, parse out something we can build from.
            else if (typeof this.tickInterval == "string") {
                var parts = this.tickInterval.split(' ');
                if (parts.length == 1) {
                    daTickInterval = [1, parts[0]];
                }
                else if (parts.length == 2) {
                    daTickInterval = [parts[0], parts[1]];
                }
            }
        }

var tickInterval = this.tickInterval;
        
        // if we already have ticks, use them.
        // ticks must be in order of increasing value.
        
        min = new $.jsDate((this.min != null) ? this.min : db.min).getTime();
        max = new $.jsDate((this.max != null) ? this.max : db.max).getTime();

// see if we're zooming.  if we are, don't use the min and max we're given,
        // but compute some nice ones.  They will be reset later.

var cursor = plot.plugins.cursor;

if (cursor && cursor._zoom && cursor._zoom.zooming) {
            this.min = null;
            this.max = null;
        }

var range = max - min;

if (this.tickOptions == null || !this.tickOptions.formatString) {
            this._overrideFormatString = true;
        }
        
        if (userTicks.length) {
            // ticks could be 1D or 2D array of [val, val, ,,,] or [[val, label], [val, label], ...] or mixed
            for (i=0; i<userTicks.length; i++){
                var ut = userTicks[i];
                var t = new this.tickRenderer(this.tickOptions);
                if (ut.constructor == Array) {
                    t.value = new $.jsDate(ut[0]).getTime();
                    t.label = ut[1];
                    if (!this.showTicks) {
                        t.showLabel = false;
                        t.showMark = false;
                    }
                    else if (!this.showTickMarks) {
                        t.showMark = false;
                    }
                    t.setTick(t.value, this.name);
                    this._ticks.push(t);
                }
                
                else {
                    t.value = new $.jsDate(ut).getTime();
                    if (!this.showTicks) {
                        t.showLabel = false;
                        t.showMark = false;
                    }
                    else if (!this.showTickMarks) {
                        t.showMark = false;
                    }
                    t.setTick(t.value, this.name);
                    this._ticks.push(t);
                }
            }
            this.numberTicks = userTicks.length;
            this.min = this._ticks[0].value;
            this.max = this._ticks[this.numberTicks-1].value;
            this.daTickInterval = [(this.max - this.min) / (this.numberTicks - 1)/1000, 'seconds'];
        }

////////
        // We don't have any ticks yet, let's make some!
        ////////

// special case when there is only one point, make three tick marks to center the point
        else if (this.min == null && this.max == null && db.min == db.max)
        {
             var onePointOpts = $.extend(true, {}, this.tickOptions, {name: this.name, value: null});
             var delta = 300000;
             this.min = db.min - delta;
             this.max = db.max + delta;
             this.numberTicks = 3;

for(var i=this.min;i<=this.max;i+= delta)
             {
                 onePointOpts.value = i;

var t = new this.tickRenderer(onePointOpts);

if (this._overrideFormatString && this._autoFormatString != '') {
                    t.formatString = this._autoFormatString;
                 }

t.showLabel = false;
                 t.showMark = false;

this._ticks.push(t);
             }

if(this.showTicks) {
                 this._ticks[1].showLabel = true;
             }
             if(this.showTickMarks) {
                 this._ticks[1].showTickMarks = true;
             }                   
        }
        // if user specified min and max are null, we set those to make best ticks.
        else if (this.min == null && this.max == null) {

var opts = $.extend(true, {}, this.tickOptions, {name: this.name, value: null});

// want to find a nice interval 
            var nttarget,
                titarget;

// if no tickInterval or numberTicks options specified,  make a good guess.
            if (!this.tickInterval && !this.numberTicks) {
                var tdim = Math.max(dim, threshold+1);
                // how many ticks to put on the axis?
                // date labels tend to be long.  If ticks not rotated,
                // don't use too many and have a high spacing factor.
                // If we are rotating ticks, use a lower factor.
                var spacingFactor = 115;
                if (this.tickRenderer === $.jqplot.CanvasAxisTickRenderer && this.tickOptions.angle) {
                    spacingFactor = 115 - 40 * Math.abs(Math.sin(this.tickOptions.angle/180*Math.PI));
                }

nttarget =  Math.ceil((tdim-threshold)/spacingFactor + 1);
                titarget = (max - min) / (nttarget - 1);
            }

// If tickInterval is specified, we'll try to honor it.
            // Not guaranteed to get this interval, but we'll get as close as
            // we can.
            // tickInterval will be used before numberTicks, that is if
            // both are specified, numberTicks will be ignored.
            else if (this.tickInterval) {
                titarget = new $.jsDate(0).add(daTickInterval[0], daTickInterval[1]).getTime();
            }

// if numberTicks specified, try to honor it.
            // Not guaranteed, but will try to get close.
            else if (this.numberTicks) {
                nttarget = this.numberTicks;
                titarget = (max - min) / (nttarget - 1);
            }

// If we can use an interval of 2 weeks or less, pick best one
            if (titarget <= 19*day) {
                var ret = bestDateInterval(min, max, titarget);
                var tempti = ret[0];
                this._autoFormatString = ret[1];

min = new $.jsDate(min);
                min = Math.floor((min.getTime() - min.getUtcOffset())/tempti) * tempti + min.getUtcOffset();

nttarget = Math.ceil((max - min) / tempti) + 1;
                this.min = min;
                this.max = min + (nttarget - 1) * tempti;

// if max is less than max, add an interval
                if (this.max < max) {
                    this.max += tempti;
                    nttarget += 1;
                }
                this.tickInterval = tempti;
                this.numberTicks = nttarget;

for (var i=0; i<nttarget; i++) {
                    opts.value = this.min + i * tempti;
                    t = new this.tickRenderer(opts);
                    
                    if (this._overrideFormatString && this._autoFormatString != '') {
                        t.formatString = this._autoFormatString;
                    }
                    if (!this.showTicks) {
                        t.showLabel = false;
                        t.showMark = false;
                    }
                    else if (!this.showTickMarks) {
                        t.showMark = false;
                    }
                    this._ticks.push(t);
                }

insetMult = this.tickInterval;
            }

// should we use a monthly interval?
            else if (titarget <= 9 * month) {

this._autoFormatString = '%v';

// how many months in an interval?
                var intv = Math.round(titarget/month);
                if (intv < 1) {
                    intv = 1;
                }
                else if (intv > 6) {
                    intv = 6;
                }

// figure out the starting month and ending month.
                var mstart = new $.jsDate(min).setDate(1).setHours(0,0,0,0);

// See if max ends exactly on a month
                var tempmend = new $.jsDate(max);
                var mend = new $.jsDate(max).setDate(1).setHours(0,0,0,0);

if (tempmend.getTime() !== mend.getTime()) {
                    mend = mend.add(1, 'month');
                }

var nmonths = mend.diff(mstart, 'month');

nttarget = Math.ceil(nmonths/intv) + 1;

this.min = mstart.getTime();
                this.max = mstart.clone().add((nttarget - 1) * intv, 'month').getTime();
                this.numberTicks = nttarget;

for (var i=0; i<nttarget; i++) {
                    if (i === 0) {
                        opts.value = mstart.getTime();
                    }
                    else {
                        opts.value = mstart.add(intv, 'month').getTime();
                    }
                    t = new this.tickRenderer(opts);
                    
                    if (this._overrideFormatString && this._autoFormatString != '') {
                        t.formatString = this._autoFormatString;
                    }
                    if (!this.showTicks) {
                        t.showLabel = false;
                        t.showMark = false;
                    }
                    else if (!this.showTickMarks) {
                        t.showMark = false;
                    }
                    this._ticks.push(t);
                }

insetMult = intv * month;
            }

// use yearly intervals
            else {

this._autoFormatString = '%v';

// how many years in an interval?
                var intv = Math.round(titarget/year);
                if (intv < 1) {
                    intv = 1;
                }

// figure out the starting and ending years.
                var mstart = new $.jsDate(min).setMonth(0, 1).setHours(0,0,0,0);
                var mend = new $.jsDate(max).add(1, 'year').setMonth(0, 1).setHours(0,0,0,0);

var nyears = mend.diff(mstart, 'year');

nttarget = Math.ceil(nyears/intv) + 1;

this.min = mstart.getTime();
                this.max = mstart.clone().add((nttarget - 1) * intv, 'year').getTime();
                this.numberTicks = nttarget;

for (var i=0; i<nttarget; i++) {
                    if (i === 0) {
                        opts.value = mstart.getTime();
                    }
                    else {
                        opts.value = mstart.add(intv, 'year').getTime();
                    }
                    t = new this.tickRenderer(opts);
                    
                    if (this._overrideFormatString && this._autoFormatString != '') {
                        t.formatString = this._autoFormatString;
                    }
                    if (!this.showTicks) {
                        t.showLabel = false;
                        t.showMark = false;
                    }
                    else if (!this.showTickMarks) {
                        t.showMark = false;
                    }
                    this._ticks.push(t);
                }

insetMult = intv * year;
            }
        }

////////
        // Some option(s) specified, work around that.
        ////////
        
        else {      
            if (name == 'xaxis' || name == 'x2axis') {
                dim = this._plotDimensions.width;
            }
            else {
                dim = this._plotDimensions.height;
            }
            
            // if min, max and number of ticks specified, user can't specify interval.
            if (this.min != null && this.max != null && this.numberTicks != null) {
                this.tickInterval = null;
            }
            
            if (this.tickInterval != null && daTickInterval != null) {
                this.daTickInterval = daTickInterval;
            }
            
            // if min and max are same, space them out a bit
            if (min == max) {
                var adj = 24*60*60*500;  // 1/2 day
                min -= adj;
                max += adj;
            }

range = max - min;
            
            var optNumTicks = 2 + parseInt(Math.max(0, dim-100)/100, 10);
            
            
            var rmin, rmax;
            
            rmin = (this.min != null) ? new $.jsDate(this.min).getTime() : min - range/2*(this.padMin - 1);
            rmax = (this.max != null) ? new $.jsDate(this.max).getTime() : max + range/2*(this.padMax - 1);
            this.min = rmin;
            this.max = rmax;
            range = this.max - this.min;
            
            if (this.numberTicks == null){
                // if tickInterval is specified by user, we will ignore computed maximum.
                // max will be equal or greater to fit even # of ticks.
                if (this.daTickInterval != null) {
                    var nc = new $.jsDate(this.max).diff(this.min, this.daTickInterval[1], true);
                    this.numberTicks = Math.ceil(nc/this.daTickInterval[0]) +1;
                    // this.max = new $.jsDate(this.min).add(this.numberTicks-1, this.daTickInterval[1]).getTime();
                    this.max = new $.jsDate(this.min).add((this.numberTicks-1) * this.daTickInterval[0], this.daTickInterval[1]).getTime();
                }
                else if (dim > 200) {
                    this.numberTicks = parseInt(3+(dim-200)/100, 10);
                }
                else {
                    this.numberTicks = 2;
                }
            }
            
            insetMult = range / (this.numberTicks-1)/1000;

if (this.daTickInterval == null) {
                this.daTickInterval = [insetMult, 'seconds'];
            }

for (var i=0; i<this.numberTicks; i++){
                var min = new $.jsDate(this.min);
                tt = min.add(i*this.daTickInterval[0], this.daTickInterval[1]).getTime();
                var t = new this.tickRenderer(this.tickOptions);
                // var t = new $.jqplot.AxisTickRenderer(this.tickOptions);
                if (!this.showTicks) {
                    t.showLabel = false;
                    t.showMark = false;
                }
                else if (!this.showTickMarks) {
                    t.showMark = false;
                }
                t.setTick(tt, this.name);
                this._ticks.push(t);
            }
        }

if (this.tickInset) {
            this.min = this.min - this.tickInset * insetMult;
            this.max = this.max + this.tickInset * insetMult;
        }

if (this._daTickInterval == null) {
            this._daTickInterval = this.daTickInterval;    
        }

ticks = null;
    };
   
})(jQuery);