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-/**
- * jqPlot
- * Pure JavaScript plotting plugin using jQuery
- *
- * Version: 1.0.4
- * Revision: 1121
- *
- * Copyright (c) 2009-2012 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: $.jqplot.LogAxisRenderer
- * A plugin for a jqPlot to render a logarithmic axis.
- *
- * To use this renderer, include the plugin in your source
- * > <script type="text/javascript" language="javascript" src="plugins/jqplot.logAxisRenderer.js"></script>
- *
- * and supply the appropriate options to your plot
- *
- * > {axes:{xaxis:{renderer:$.jqplot.LogAxisRenderer}}}
- **/
- $.jqplot.LogAxisRenderer = function() {
- $.jqplot.LinearAxisRenderer.call(this);
- // prop: axisDefaults
- // Default properties which will be applied directly to the series.
- //
- // Group: Properties
- //
- // Properties
- //
- // base - the logarithmic base, commonly 2, 10 or Math.E
- // tickDistribution - Deprecated. "power" distribution of ticks
- // always used. Option has no effect.
- this.axisDefaults = {
- base : 10,
- tickDistribution :'power'
- };
- };
-
- $.jqplot.LogAxisRenderer.prototype = new $.jqplot.LinearAxisRenderer();
- $.jqplot.LogAxisRenderer.prototype.constructor = $.jqplot.LogAxisRenderer;
-
- $.jqplot.LogAxisRenderer.prototype.init = function(options) {
- // prop: drawBaseline
- // True to draw the axis baseline.
- this.drawBaseline = true;
- // prop: minorTicks
- // Number of ticks to add between "major" ticks.
- // Major ticks are ticks supplied by user or auto computed.
- // Minor ticks cannot be created by user.
- this.minorTicks = 'auto';
- this._scalefact = 1.0;
-
- $.extend(true, this, options);
-
- this._autoFormatString = '%d';
- this._overrideFormatString = false;
-
- for (var d in this.renderer.axisDefaults) {
- if (this[d] == null) {
- this[d] = this.renderer.axisDefaults[d];
- }
- }
-
- this.resetDataBounds();
- };
-
- $.jqplot.LogAxisRenderer.prototype.createTicks = function(plot) {
- // we're are operating on an axis here
- var ticks = this._ticks;
- var userTicks = this.ticks;
- var name = this.name;
- var db = this._dataBounds;
- var dim = (this.name.charAt(0) === 'x') ? this._plotDimensions.width : this._plotDimensions.height;
- var interval;
- var min, max;
- var pos1, pos2;
- var tt, i;
-
- var threshold = 30;
- // For some reason scalefactor is screwing up ticks.
- this._scalefact = (Math.max(dim, threshold+1) - threshold)/300;
-
- // if we already have ticks, use them.
- // ticks must be in order of increasing value.
- if (userTicks.length) {
- // ticks could be 1D or 2D array of [val, val, ,,,] or [[val, label], [val, label], ...] or mixed
- for (i=0; i<userTicks.length; i++){
- var ut = userTicks[i];
- var t = new this.tickRenderer(this.tickOptions);
- if (ut.constructor == Array) {
- t.value = ut[0];
- t.label = ut[1];
- if (!this.showTicks) {
- t.showLabel = false;
- t.showMark = false;
- }
- else if (!this.showTickMarks) {
- t.showMark = false;
- }
- t.setTick(ut[0], this.name);
- this._ticks.push(t);
- }
-
- else if ($.isPlainObject(ut)) {
- $.extend(true, t, ut);
- t.axis = this.name;
- this._ticks.push(t);
- }
-
- else {
- t.value = ut;
- if (!this.showTicks) {
- t.showLabel = false;
- t.showMark = false;
- }
- else if (!this.showTickMarks) {
- t.showMark = false;
- }
- t.setTick(ut, this.name);
- this._ticks.push(t);
- }
- }
- this.numberTicks = userTicks.length;
- this.min = this._ticks[0].value;
- this.max = this._ticks[this.numberTicks-1].value;
- }
-
- // we don't have any ticks yet, let's make some!
- else if (this.min == null && this.max == null) {
- min = db.min * (2 - this.padMin);
- max = db.max * this.padMax;
-
- // if min and max are same, space them out a bit
- if (min == max) {
- var adj = 0.05;
- min = min*(1-adj);
- max = max*(1+adj);
- }
-
- // perform some checks
- if (this.min != null && this.min <= 0) {
- throw('log axis minimum must be greater than 0');
- }
- if (this.max != null && this.max <= 0) {
- throw('log axis maximum must be greater than 0');
- }
-
- function findCeil (val) {
- var order = Math.pow(10, Math.floor(Math.log(val)/Math.LN10));
- return Math.ceil(val/order) * order;
- }
-
- function findFloor(val) {
- var order = Math.pow(10, Math.floor(Math.log(val)/Math.LN10));
- return Math.floor(val/order) * order;
- }
-
- // var range = max - min;
- var rmin, rmax;
-
- // for power distribution, open up range to get a nice power of axis.renderer.base.
- // power distribution won't respect the user's min/max settings.
- rmin = Math.pow(this.base, Math.floor(Math.log(min)/Math.log(this.base)));
- rmax = Math.pow(this.base, Math.ceil(Math.log(max)/Math.log(this.base)));
-
- // // if min and max are same, space them out a bit
- // if (rmin === rmax) {
- // var adj = 0.05;
- // rmin = rmin*(1-adj);
- // rmax = rmax*(1+adj);
- // }
-
- var order = Math.round(Math.log(rmin)/Math.LN10);
-
- if (this.tickOptions == null || !this.tickOptions.formatString) {
- this._overrideFormatString = true;
- }
-
- this.min = rmin;
- this.max = rmax;
- var range = this.max - this.min;
-
- var minorTicks = (this.minorTicks === 'auto') ? 0 : this.minorTicks;
- var numberTicks;
- if (this.numberTicks == null){
- if (dim > 140) {
- numberTicks = Math.round(Math.log(this.max/this.min)/Math.log(this.base) + 1);
- if (numberTicks < 2) {
- numberTicks = 2;
- }
- if (minorTicks === 0) {
- var temp = dim/(numberTicks - 1);
- if (temp < 100) {
- minorTicks = 0;
- }
- else if (temp < 190) {
- minorTicks = 1;
- }
- else if (temp < 250) {
- minorTicks = 3;
- }
- else if (temp < 600) {
- minorTicks = 4;
- }
- else {
- minorTicks = 9;
- }
- }
- }
- else {
- numberTicks = 2;
- if (minorTicks === 0) {
- minorTicks = 1;
- }
- minorTicks = 0;
- }
- }
- else {
- numberTicks = this.numberTicks;
- }
-
- if (order >= 0 && minorTicks !== 3) {
- this._autoFormatString = '%d';
- }
- // Adjust format string for case with 3 ticks where we'll have like 1, 2.5, 5, 7.5, 10
- else if (order <= 0 && minorTicks === 3) {
- var temp = -(order - 1);
- this._autoFormatString = '%.'+ Math.abs(order-1) + 'f';
- }
-
- // Adjust format string for values less than 1.
- else if (order < 0) {
- var temp = -order;
- this._autoFormatString = '%.'+ Math.abs(order) + 'f';
- }
-
- else {
- this._autoFormatString = '%d';
- }
-
- var to, t, val, tt1, spread, interval;
- for (var i=0; i<numberTicks; i++){
- tt = Math.pow(this.base, i - numberTicks + 1) * this.max;
-
- t = new this.tickRenderer(this.tickOptions);
-
- if (this._overrideFormatString) {
- t.formatString = this._autoFormatString;
- }
-
- 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 (minorTicks && i<numberTicks-1) {
- tt1 = Math.pow(this.base, i - numberTicks + 2) * this.max;
- spread = tt1 - tt;
- interval = tt1 / (minorTicks+1);
- for (var j=minorTicks-1; j>=0; j--) {
- val = tt1-interval*(j+1);
- t = new this.tickRenderer(this.tickOptions);
-
- 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;
- }
- t.setTick(val, this.name);
- this._ticks.push(t);
- }
- }
- }
- }
-
- // min and max are set as would be the case with zooming
- else if (this.min != null && this.max != null) {
- var opts = $.extend(true, {}, this.tickOptions, {name: this.name, value: null});
- var nt, ti;
- // don't have an interval yet, pick one that gives the most
- // "round" ticks we can get.
- if (this.numberTicks == null && this.tickInterval == null) {
- // var threshold = 30;
- var tdim = Math.max(dim, threshold+1);
- var nttarget = Math.ceil((tdim-threshold)/35 + 1);
-
- var ret = $.jqplot.LinearTickGenerator.bestConstrainedInterval(this.min, this.max, nttarget);
-
- this._autoFormatString = ret[3];
- nt = ret[2];
- ti = ret[4];
-
- for (var i=0; i<nt; i++) {
- opts.value = this.min + i * ti;
- 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);
- }
- }
-
- // for loose zoom, number ticks and interval are also set.
- else if (this.numberTicks != null && this.tickInterval != null) {
- nt = this.numberTicks;
- for (var i=0; i<nt; i++) {
- opts.value = this.min + i * this.tickInterval;
- 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);
- }
- }
- }
- };
-
- $.jqplot.LogAxisRenderer.prototype.pack = function(pos, offsets) {
- var lb = parseInt(this.base, 10);
- var ticks = this._ticks;
- 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); \ No newline at end of file