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Editing: jqplot.dateAxisRenderer.js
/** * jqPlot * Pure JavaScript plotting plugin using jQuery * * Version: 1.0.9 * Revision: d96a669 * * 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(d[j][0]).getTime(); sd[j][0] = new $.jsDate(d[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(d[j][1]).getTime(); sd[j][1] = new $.jsDate(d[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);
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