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source: Dev/branches/rest-dojo-ui/jQueryUI/client/RGraph/libraries/RGraph.scatter.js @ 312

Last change on this file since 312 was 312, checked in by jkraaijeveld, 13 years ago

File size: 57.8 KB

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1	/**
2	* o------------------------------------------------------------------------------o
3	* \| This file is part of the RGraph package - you can learn more at: \|
4	* \| \|
5	* \| http://www.rgraph.net \|
6	* \| \|
7	* \| This package is licensed under the RGraph license. For all kinds of business \|
8	* \| purposes there is a small one-time licensing fee to pay and for non \|
9	* \| commercial purposes it is free to use. You can read the full license here: \|
10	* \| \|
11	* \| http://www.rgraph.net/LICENSE.txt \|
12	* o------------------------------------------------------------------------------o
13	*/
14
15	if (typeof(RGraph) == 'undefined') RGraph = {};
16
17	/**
18	* The scatter graph constructor
19	*
20	* @param object canvas The cxanvas object
21	* @param array data The chart data
22	*/
23	RGraph.Scatter = function (id, data)
24	{
25	// Get the canvas and context objects
26	this.id = id;
27	this.canvas = document.getElementById(id);
28	this.canvas.__object__ = this;
29	this.context = this.canvas.getContext ? this.canvas.getContext("2d") : null;
30	this.max = 0;
31	this.coords = [];
32	this.data = [];
33	this.type = 'scatter';
34	this.isRGraph = true;
35
36
37	/**
38	* Compatibility with older browsers
39	*/
40	RGraph.OldBrowserCompat(this.context);
41
42
43	// Various config properties
44	this.properties = {
45	'chart.background.barcolor1': 'rgba(0,0,0,0)',
46	'chart.background.barcolor2': 'rgba(0,0,0,0)',
47	'chart.background.grid': true,
48	'chart.background.grid.width': 1,
49	'chart.background.grid.color': '#ddd',
50	'chart.background.grid.hsize': 20,
51	'chart.background.grid.vsize': 20,
52	'chart.background.hbars': null,
53	'chart.background.vbars': null,
54	'chart.background.grid.vlines': true,
55	'chart.background.grid.hlines': true,
56	'chart.background.grid.border': true,
57	'chart.background.grid.autofit':false,
58	'chart.background.grid.autofit.numhlines': 7,
59	'chart.background.grid.autofit.numvlines': 20,
60	'chart.text.size': 10,
61	'chart.text.angle': 0,
62	'chart.text.color': 'black',
63	'chart.text.font': 'Verdana',
64	'chart.tooltips.effect': 'fade',
65	'chart.tooltips.hotspot': 3,
66	'chart.tooltips.css.class': 'RGraph_tooltip',
67	'chart.tooltips.highlight': true,
68	'chart.tooltips.coords.adjust': [0,0],
69	'chart.units.pre': '',
70	'chart.units.post': '',
71	'chart.tickmarks': 'cross',
72	'chart.ticksize': 5,
73	'chart.xticks': true,
74	'chart.xaxis': true,
75	'chart.gutter.left': 25,
76	'chart.gutter.right': 25,
77	'chart.gutter.top': 25,
78	'chart.gutter.bottom': 25,
79	'chart.xmax': 0,
80	'chart.ymax': null,
81	'chart.ymin': null,
82	'chart.scale.decimals': null,
83	'chart.scale.point': '.',
84	'chart.scale.thousand': ',',
85	'chart.title': '',
86	'chart.title.background': null,
87	'chart.title.hpos': null,
88	'chart.title.vpos': null,
89	'chart.title.xaxis': '',
90	'chart.title.yaxis': '',
91	'chart.title.xaxis.pos': 0.25,
92	'chart.title.yaxis.pos': 0.25,
93	'chart.labels': [],
94	'chart.labels.ingraph': null,
95	'chart.labels.above': false,
96	'chart.labels.above.size': 8,
97	'chart.labels.above.decimals': 0,
98	'chart.ylabels': true,
99	'chart.ylabels.count': 5,
100	'chart.ylabels.invert': false,
101	'chart.contextmenu': null,
102	'chart.defaultcolor': 'black',
103	'chart.xaxispos': 'bottom',
104	'chart.yaxispos': 'left',
105	'chart.noendxtick': false,
106	'chart.crosshairs': false,
107	'chart.crosshairs.color': '#333',
108	'chart.crosshairs.linewidth': 1,
109	'chart.crosshairs.coords': false,
110	'chart.crosshairs.coords.fixed':true,
111	'chart.crosshairs.coords.fadeout':false,
112	'chart.crosshairs.coords.labels.x': 'X',
113	'chart.crosshairs.coords.labels.y': 'Y',
114	'chart.annotatable': false,
115	'chart.annotate.color': 'black',
116	'chart.line': false,
117	'chart.line.linewidth': 1,
118	'chart.line.colors': ['green', 'red'],
119	'chart.line.shadow.color': 'rgba(0,0,0,0)',
120	'chart.line.shadow.blur': 2,
121	'chart.line.shadow.offsetx': 3,
122	'chart.line.shadow.offsety': 3,
123	'chart.line.stepped': false,
124	'chart.noaxes': false,
125	'chart.key': [],
126	'chart.key.background': 'white',
127	'chart.key.position': 'graph',
128	'chart.key.halign': 'right',
129	'chart.key.shadow': false,
130	'chart.key.shadow.color': '#666',
131	'chart.key.shadow.blur': 3,
132	'chart.key.shadow.offsetx': 2,
133	'chart.key.shadow.offsety': 2,
134	'chart.key.position.gutter.boxed': true,
135	'chart.key.position.x': null,
136	'chart.key.position.y': null,
137	'chart.key.color.shape': 'square',
138	'chart.key.rounded': true,
139	'chart.key.linewidth': 1,
140	'chart.axis.color': 'black',
141	'chart.zoom.factor': 1.5,
142	'chart.zoom.fade.in': true,
143	'chart.zoom.fade.out': true,
144	'chart.zoom.hdir': 'right',
145	'chart.zoom.vdir': 'down',
146	'chart.zoom.frames': 10,
147	'chart.zoom.delay': 50,
148	'chart.zoom.shadow': true,
149	'chart.zoom.mode': 'canvas',
150	'chart.zoom.thumbnail.width': 75,
151	'chart.zoom.thumbnail.height': 75,
152	'chart.zoom.background': true,
153	'chart.zoom.action': 'zoom',
154	'chart.boxplot.width': 8,
155	'chart.resizable': false,
156	'chart.resize.handle.adjust': [0,0],
157	'chart.resize.handle.background': null,
158	'chart.xmin': 0,
159	'chart.labels.specific.align': 'left'
160	}
161
162	// Handle multiple datasets being given as one argument
163	if (arguments[1][0] && arguments[1][0][0] && typeof(arguments[1][0][0][0]) == 'number') {
164	// Store the data set(s)
165	for (var i=0; i<arguments[1].length; ++i) {
166	this.data[i] = arguments[1][i];
167	}
168
169	// Handle multiple data sets being supplied as seperate arguments
170	} else {
171	// Store the data set(s)
172	for (var i=1; i<arguments.length; ++i) {
173	this.data[i - 1] = arguments[i];
174	}
175	}
176
177	// Check for support
178	if (!this.canvas) {
179	alert('[SCATTER] No canvas support');
180	return;
181	}
182
183
184	/**
185	* Set the .getShape commonly named method
186	*/
187	this.getShape = this.getPoint;
188	}
189
190
191	/**
192	* A simple setter
193	*
194	* @param string name The name of the property to set
195	* @param string value The value of the property
196	*/
197	RGraph.Scatter.prototype.Set = function (name, value)
198	{
199	/**
200	* This is here because the key expects a name of "chart.colors"
201	*/
202	if (name == 'chart.line.colors') {
203	this.properties['chart.colors'] = value;
204	}
205
206	/**
207	* Allow compatibility with older property names
208	*/
209	if (name == 'chart.tooltip.hotspot') {
210	name = 'chart.tooltips.hotspot';
211	}
212
213	/**
214	* chart.yaxispos should be left or right
215	*/
216	if (name == 'chart.yaxispos' && value != 'left' && value != 'right') {
217	alert("[SCATTER] chart.yaxispos should be left or right. You've set it to: '" + value + "' Changing it to left");
218	value = 'left';
219	}
220
221	/**
222	* Check for xaxispos
223	*/
224	if (name == 'chart.xaxispos' ) {
225	if (value != 'bottom' && value != 'center') {
226	alert('[SCATTER] (' + this.id + ') chart.xaxispos should be center or bottom. Tried to set it to: ' + value + ' Changing it to center');
227	value = 'center';
228	}
229	}
230
231	this.properties[name.toLowerCase()] = value;
232	}
233
234
235	/**
236	* A simple getter
237	*
238	* @param string name The name of the property to set
239	*/
240	RGraph.Scatter.prototype.Get = function (name)
241	{
242	return this.properties[name];
243	}
244
245
246	/**
247	* The function you call to draw the line chart
248	*/
249	RGraph.Scatter.prototype.Draw = function ()
250	{
251	// MUST be the first thing done!
252	if (typeof(this.Get('chart.background.image')) == 'string' && !this.__background_image__) {
253	RGraph.DrawBackgroundImage(this);
254	return;
255	}
256
257	/**
258	* Fire the onbeforedraw event
259	*/
260	RGraph.FireCustomEvent(this, 'onbeforedraw');
261
262	/**
263	* Clear all of this canvases event handlers (the ones installed by RGraph)
264	*/
265	RGraph.ClearEventListeners(this.id);
266
267	/**
268	* This is new in May 2011 and facilitates indiviual gutter settings,
269	* eg chart.gutter.left
270	*/
271	this.gutterLeft = this.Get('chart.gutter.left');
272	this.gutterRight = this.Get('chart.gutter.right');
273	this.gutterTop = this.Get('chart.gutter.top');
274	this.gutterBottom = this.Get('chart.gutter.bottom');
275
276	// Go through all the data points and see if a tooltip has been given
277	this.Set('chart.tooltips', false);
278	this.hasTooltips = false;
279	var overHotspot = false;
280
281	// Reset the coords array
282	this.coords = [];
283
284	if (!RGraph.isIE8()) {
285	for (var i=0; i<this.data.length; ++i) {
286	for (var j =0;j<this.data[i].length; ++j) {
287	if (this.data[i][j] && this.data[i][j][3] && typeof(this.data[i][j][3]) == 'string' && this.data[i][j][3].length) {
288	this.Set('chart.tooltips', [1]); // An array
289	this.hasTooltips = true;
290	}
291	}
292	}
293	}
294
295	// Reset the maximum value
296	this.max = 0;
297
298	// Work out the maximum Y value
299	if (this.Get('chart.ymax') && this.Get('chart.ymax') > 0) {
300
301	this.scale = [];
302	this.max = this.Get('chart.ymax');
303	this.min = this.Get('chart.ymin') ? this.Get('chart.ymin') : 0;
304
305	this.scale[0] = ((this.max - this.min) * (1/5)) + this.min;
306	this.scale[1] = ((this.max - this.min) * (2/5)) + this.min;
307	this.scale[2] = ((this.max - this.min) * (3/5)) + this.min;
308	this.scale[3] = ((this.max - this.min) * (4/5)) + this.min;
309	this.scale[4] = ((this.max - this.min) * (5/5)) + this.min;
310
311	var decimals = this.Get('chart.scale.decimals');
312
313	this.scale = [
314	Number(this.scale[0]).toFixed(decimals),
315	Number(this.scale[1]).toFixed(decimals),
316	Number(this.scale[2]).toFixed(decimals),
317	Number(this.scale[3]).toFixed(decimals),
318	Number(this.scale[4]).toFixed(decimals)
319	];
320
321	} else {
322
323	var i = 0;
324	var j = 0;
325
326	for (i=0; i<this.data.length; ++i) {
327	for (j=0; j<this.data[i].length; ++j) {
328	this.max = Math.max(this.max, typeof(this.data[i][j][1]) == 'object' ? RGraph.array_max(this.data[i][j][1]) : Math.abs(this.data[i][j][1]));
329	}
330	}
331
332	this.scale = RGraph.getScale(this.max, this);
333
334	this.max = this.scale[4];
335	this.min = this.Get('chart.ymin') ? this.Get('chart.ymin') : 0;
336
337	if (this.min) {
338	this.scale[0] = ((this.max - this.min) * (1/5)) + this.min;
339	this.scale[1] = ((this.max - this.min) * (2/5)) + this.min;
340	this.scale[2] = ((this.max - this.min) * (3/5)) + this.min;
341	this.scale[3] = ((this.max - this.min) * (4/5)) + this.min;
342	this.scale[4] = ((this.max - this.min) * (5/5)) + this.min;
343	}
344
345
346	if (typeof(this.Get('chart.scale.decimals')) == 'number') {
347	var decimals = this.Get('chart.scale.decimals');
348
349	this.scale = [
350	Number(this.scale[0]).toFixed(decimals),
351	Number(this.scale[1]).toFixed(decimals),
352	Number(this.scale[2]).toFixed(decimals),
353	Number(this.scale[3]).toFixed(decimals),
354	Number(this.scale[4]).toFixed(decimals)
355	];
356	}
357	}
358
359	this.grapharea = RGraph.GetHeight(this) - this.gutterTop - this.gutterBottom;
360
361	// Progressively Draw the chart
362	RGraph.background.Draw(this);
363
364	/**
365	* Draw any horizontal bars that have been specified
366	*/
367	if (this.Get('chart.background.hbars') && this.Get('chart.background.hbars').length) {
368	RGraph.DrawBars(this);
369	}
370
371	/**
372	* Draw any vertical bars that have been specified
373	*/
374	if (this.Get('chart.background.vbars') && this.Get('chart.background.vbars').length) {
375	this.DrawVBars();
376	}
377
378	if (!this.Get('chart.noaxes')) {
379	this.DrawAxes();
380	}
381
382	this.DrawLabels();
383
384	i = 0;
385	for(i=0; i<this.data.length; ++i) {
386	this.DrawMarks(i);
387
388	// Set the shadow
389	this.context.shadowColor = this.Get('chart.line.shadow.color');
390	this.context.shadowOffsetX = this.Get('chart.line.shadow.offsetx');
391	this.context.shadowOffsetY = this.Get('chart.line.shadow.offsety');
392	this.context.shadowBlur = this.Get('chart.line.shadow.blur');
393
394	this.DrawLine(i);
395
396	// Turn the shadow off
397	RGraph.NoShadow(this);
398	}
399
400
401	if (this.Get('chart.line')) {
402	for (var i=0;i<this.data.length; ++i) {
403	this.DrawMarks(i); // Call this again so the tickmarks appear over the line
404	}
405	}
406
407
408
409	/**
410	* Setup the context menu if required
411	*/
412	if (this.Get('chart.contextmenu')) {
413	RGraph.ShowContext(this);
414	}
415
416	/**
417	* Install the event handler for tooltips
418	*/
419	if (this.hasTooltips) {
420
421	/**
422	* Register all charts
423	*/
424	RGraph.Register(this);
425
426	var overHotspot = false;
427
428	var canvas_onmousemove_func = function (e)
429	{
430	e = RGraph.FixEventObject(e);
431
432	var canvas = e.target;
433	var obj = canvas.__object__;
434	var context = obj.context;
435	var mouseCoords = RGraph.getMouseXY(e);
436	var point = obj.getPoint(e);
437	var overHotspot = false;
438
439	if (point) {
440
441	var __dataset__ = point[2];
442	var __index__ = point[3];
443	var __text__ = point[4];
444	var overHotspot = true;
445
446	if (point[4]) {
447	canvas.style.cursor = 'pointer';
448
449	if (
450	!RGraph.Registry.Get('chart.tooltip') \|\|
451	RGraph.Registry.Get('chart.tooltip').__text__ != __text__ \|\|
452	RGraph.Registry.Get('chart.tooltip').__index__ != __index__ \|\|
453	RGraph.Registry.Get('chart.tooltip').__dataset__ != __dataset__
454	) {
455
456	if (obj.Get('chart.tooltips.highlight')) {
457	RGraph.Redraw();
458	}
459
460	/**
461	* Get the tooltip text
462	*/
463	if (typeof(__text__) == 'function') {
464	var text = String(__text__(i));
465
466	} else {
467	var text = String(__text__);
468	}
469
470	RGraph.Tooltip(canvas, text, e.pageX, e.pageY, __index__);
471
472	RGraph.Registry.Get('chart.tooltip').__index__ = __index__;
473
474	if (RGraph.Registry.Get('chart.tooltip')) {
475	RGraph.Registry.Get('chart.tooltip').__dataset__ = __dataset__;
476	}
477
478	/**
479	* Draw a circle around the mark
480	*/
481	if (obj.Get('chart.tooltips.highlight')) {
482	context.beginPath();
483	context.fillStyle = 'rgba(255,255,255,0.5)';
484	context.arc(point[0], point[1], 3, 0, 6.28, 0);
485	context.fill();
486	}
487	}
488	}
489	}
490
491	/**
492	* Reset the pointer
493	*/
494	if (!overHotspot \|\| !point[4]) {
495	canvas.style.cursor = 'default';
496	}
497	}
498	this.canvas.addEventListener('mousemove', canvas_onmousemove_func, false);
499	RGraph.AddEventListener(this.id, 'mousemove', canvas_onmousemove_func);
500	}
501
502
503	/**
504	* Draw the key if necessary
505	*/
506	if (this.Get('chart.key') && this.Get('chart.key').length) {
507	RGraph.DrawKey(this, this.Get('chart.key'), this.Get('chart.line.colors'));
508	}
509
510
511	/**
512	* Draw " above" labels if enabled
513	*/
514	if (this.Get('chart.labels.above')) {
515	this.DrawAboveLabels();
516	}
517
518	/**
519	* Draw the "in graph" labels, using the member function, NOT the shared function in RGraph.common.core.js
520	*/
521	this.DrawInGraphLabels(this);
522
523
524	/**
525	* Draw crosschairs
526	*/
527	RGraph.DrawCrosshairs(this);
528
529
530	/**
531	* If the canvas is annotatable, do install the event handlers
532	*/
533	if (this.Get('chart.annotatable')) {
534	RGraph.Annotate(this);
535	}
536
537	/**
538	* This bit shows the mini zoom window if requested
539	*/
540	if (this.Get('chart.zoom.mode') == 'thumbnail' \|\| this.Get('chart.zoom.mode') == 'area') {
541	RGraph.ShowZoomWindow(this);
542	}
543
544
545	/**
546	* This function enables resizing
547	*/
548	if (this.Get('chart.resizable')) {
549	RGraph.AllowResizing(this);
550	}
551
552	/**
553	* Fire the RGraph ondraw event
554	*/
555	RGraph.FireCustomEvent(this, 'ondraw');
556	}
557
558
559	/**
560	* Draws the axes of the scatter graph
561	*/
562	RGraph.Scatter.prototype.DrawAxes = function ()
563	{
564	var canvas = this.canvas;
565	var context = this.context;
566	var graphHeight = RGraph.GetHeight(this) - this.gutterTop - this.gutterBottom;
567
568	context.beginPath();
569	context.strokeStyle = this.Get('chart.axis.color');
570	context.lineWidth = 1;
571
572	// Draw the Y axis
573	if (this.Get('chart.yaxispos') == 'left') {
574	context.moveTo(this.gutterLeft, this.gutterTop);
575	context.lineTo(this.gutterLeft, RGraph.GetHeight(this) - this.gutterBottom);
576	} else {
577	context.moveTo(RGraph.GetWidth(this) - this.gutterRight, this.gutterTop);
578	context.lineTo(RGraph.GetWidth(this) - this.gutterRight, RGraph.GetHeight(this) - this.gutterBottom);
579	}
580
581
582	// Draw the X axis
583	if (this.Get('chart.xaxis')) {
584	if (this.Get('chart.xaxispos') == 'center') {
585	context.moveTo(this.gutterLeft, this.gutterTop + ((RGraph.GetHeight(this) - this.gutterTop - this.gutterBottom) / 2));
586	context.lineTo(RGraph.GetWidth(this) - this.gutterRight, this.gutterTop + ((RGraph.GetHeight(this) - this.gutterTop - this.gutterBottom) / 2));
587	} else {
588	context.moveTo(this.gutterLeft, RGraph.GetHeight(this) - this.gutterBottom);
589	context.lineTo(RGraph.GetWidth(this) - this.gutterRight, RGraph.GetHeight(this) - this.gutterBottom);
590	}
591	}
592
593	/**
594	* Draw the Y tickmarks
595	*/
596	for (y=this.gutterTop; y < RGraph.GetHeight(this) - this.gutterBottom + (this.Get('chart.xaxispos') == 'center' ? 1 : 0) ; y+=(graphHeight / 5) / 2) {
597
598	// This is here to accomodate the X axis being at the center
599	if (y == (this.gutterTop + ((RGraph.GetHeight(this) - this.gutterTop - this.gutterBottom) / 2)) ) continue;
600
601	if (this.Get('chart.yaxispos') == 'left') {
602	context.moveTo(this.gutterLeft, y);
603	context.lineTo(this.gutterLeft - 3, y);
604	} else {
605	context.moveTo(RGraph.GetWidth(this) - this.gutterRight +3, y);
606	context.lineTo(RGraph.GetWidth(this) - this.gutterRight, y);
607	}
608	}
609
610
611	/**
612	* Draw the X tickmarks
613	*/
614	if (this.Get('chart.xticks') && this.Get('chart.xaxis')) {
615
616	var x = 0;
617	var y = (this.Get('chart.xaxispos') == 'center') ? this.gutterTop + (this.grapharea / 2): (this.canvas.height - this.gutterBottom);
618	this.xTickGap = (this.Get('chart.labels') && this.Get('chart.labels').length) ? ((this.canvas.width - this.gutterLeft - this.gutterRight ) / this.Get('chart.labels').length) : (this.canvas.width - this.gutterLeft - this.gutterRight) / 10;
619
620	for (x = (this.gutterLeft + (this.Get('chart.yaxispos') == 'left' ? this.xTickGap : 0) );
621	x <= (this.canvas.width - this.gutterRight - (this.Get('chart.yaxispos') == 'left' ? 0 : 1));
622	x += this.xTickGap) {
623
624	if (this.Get('chart.yaxispos') == 'left' && this.Get('chart.noendxtick') == true && x == (RGraph.GetWidth(this) - this.gutterLeft) ) {
625	continue;
626	} else if (this.Get('chart.yaxispos') == 'right' && this.Get('chart.noendxtick') == true && x == this.gutterLeft) {
627	continue;
628	}
629
630	context.moveTo(x, y - (this.Get('chart.xaxispos') == 'center' ? 3 : 0));
631	context.lineTo(x, y + 3);
632	}
633	}
634
635	context.stroke();
636	}
637
638
639
640
641
642
643
644
645
646
647
648	/**
649	* Draws the labels on the scatter graph
650	*/
651	RGraph.Scatter.prototype.DrawLabels = function ()
652	{
653	this.context.fillStyle = this.Get('chart.text.color');
654	var font = this.Get('chart.text.font');
655	var xMin = this.Get('chart.xmin');
656	var xMax = this.Get('chart.xmax');
657	var yMax = this.scale[4];
658	var yMin = this.Get('chart.ymin');
659	var text_size = this.Get('chart.text.size');
660	var units_pre = this.Get('chart.units.pre');
661	var units_post = this.Get('chart.units.post');
662	var numYLabels = this.Get('chart.ylabels.count');
663	var invert = this.Get('chart.ylabels.invert');
664	var context = this.context;
665	var canvas = this.canvas;
666
667	this.halfTextHeight = text_size / 2;
668
669
670	this.halfGraphHeight = (RGraph.GetHeight(this) - this.gutterTop - this.gutterBottom) / 2;
671
672	/**
673	* Draw the Y yaxis labels, be it at the top or center
674	*/
675	if (this.Get('chart.ylabels')) {
676
677	var xPos = this.Get('chart.yaxispos') == 'left' ? this.gutterLeft - 5 : RGraph.GetWidth(this) - this.gutterRight + 5;
678	var align = this.Get('chart.yaxispos') == 'right' ? 'left' : 'right';
679
680	if (this.Get('chart.xaxispos') == 'center') {
681
682
683	/**
684	* Specific Y labels
685	*/
686	if (typeof(this.Get('chart.ylabels.specific')) == 'object') {
687
688	var labels = this.Get('chart.ylabels.specific');
689
690	for (var i=0; i<this.Get('chart.ylabels.specific').length; ++i) {
691	var y = this.gutterTop + (i * (this.grapharea / (labels.length * 2) ) );
692	RGraph.Text(context, font, text_size, xPos, y, labels[i], 'center', align);
693	}
694
695	var reversed_labels = RGraph.array_reverse(labels);
696
697	for (var i=0; i<reversed_labels.length; ++i) {
698	var y = this.gutterTop + (this.grapharea / 2) + ((i+1) * (this.grapharea / (labels.length * 2) ) );
699
700	RGraph.Text(context, font, text_size, xPos, y, reversed_labels[i], 'center', align);
701	}
702
703	return;
704	}
705
706
707	if (numYLabels == 1 \|\| numYLabels == 3 \|\| numYLabels == 5) {
708	// Draw the top halves labels
709	RGraph.Text(context, font, text_size, xPos, this.gutterTop, RGraph.number_format(this, this.scale[4], units_pre, units_post), 'center', align);
710
711
712	if (numYLabels >= 5) {
713	RGraph.Text(context, font, text_size, xPos, this.gutterTop + ((RGraph.GetHeight(this) - this.gutterTop - this.gutterBottom) * (1/10) ), RGraph.number_format(this, this.scale[3], units_pre, units_post), 'center', align);
714	RGraph.Text(context, font, text_size, xPos, this.gutterTop + ((RGraph.GetHeight(this) - this.gutterTop - this.gutterBottom) * (3/10) ), RGraph.number_format(this, this.scale[1], units_pre, units_post), 'center', align);
715	}
716
717	if (numYLabels >= 3) {
718	RGraph.Text(context, font, text_size, xPos, this.gutterTop + ((RGraph.GetHeight(this) - this.gutterTop - this.gutterBottom) * (2/10) ), RGraph.number_format(this, this.scale[2], units_pre, units_post), 'center', align);
719	RGraph.Text(context, font, text_size, xPos, this.gutterTop + ((RGraph.GetHeight(this) - this.gutterTop - this.gutterBottom) * (4/10) ), RGraph.number_format(this, this.scale[0], units_pre, units_post), 'center', align);
720	}
721
722	// Draw the bottom halves labels
723	if (numYLabels >= 3) {
724	RGraph.Text(context, font, text_size, xPos, this.gutterTop + ((RGraph.GetHeight(this) - this.gutterTop - this.gutterBottom) * (1/10) ) + this.halfGraphHeight, '-' + RGraph.number_format(this, this.scale[0], units_pre, units_post), 'center', align);
725	RGraph.Text(context, font, text_size, xPos, this.gutterTop + ((RGraph.GetHeight(this) - this.gutterTop - this.gutterBottom) * (3/10) ) + this.halfGraphHeight, '-' + RGraph.number_format(this, this.scale[2], units_pre, units_post), 'center', align);
726	}
727
728	if (numYLabels == 5) {
729	RGraph.Text(context, font, text_size, xPos, this.gutterTop + ((RGraph.GetHeight(this) - this.gutterTop - this.gutterBottom) * (2/10) ) + this.halfGraphHeight, '-' + RGraph.number_format(this, this.scale[1], units_pre, units_post), 'center', align);
730	RGraph.Text(context, font, text_size, xPos, this.gutterTop + ((RGraph.GetHeight(this) - this.gutterTop - this.gutterBottom) * (4/10) ) + this.halfGraphHeight, '-' + RGraph.number_format(this, this.scale[3], units_pre, units_post), 'center', align);
731	}
732
733	RGraph.Text(context, font, text_size, xPos, this.gutterTop + ((RGraph.GetHeight(this) - this.gutterTop - this.gutterBottom) * (5/10) ) + this.halfGraphHeight, '-' + RGraph.number_format(this, this.scale[4], units_pre, units_post), 'center', align);
734
735	} else if (numYLabels == 10) {
736	// 10 Y labels
737	var interval = (this.grapharea / numYLabels) / 2;
738
739	for (var i=0; i<numYLabels; ++i) {
740	RGraph.Text(context, font, text_size, xPos,this.gutterTop + ((RGraph.GetHeight(this) - this.gutterTop - this.gutterBottom) * (i/20) ),RGraph.number_format(this,
741
742	(this.max - (this.max * (i/10))).toFixed(this.Get('chart.scale.decimals')),
743
744	units_pre, units_post),'center', align);
745	RGraph.Text(context, font, text_size, xPos,this.gutterTop + ((RGraph.GetHeight(this) - this.gutterTop - this.gutterBottom) * (i/20) ) + (this.grapharea / 2) + (this.grapharea / 20),'-' + RGraph.number_format(this, ((this.max * (i/10)) + (this.max * (1/10))).toFixed((this.Get('chart.scale.decimals'))), units_pre, units_post), 'center', align);
746	}
747
748	} else {
749	alert('[SCATTER SCALE] Number of Y labels can be 1/3/5/10 only');
750	}
751
752	} else {
753
754	var xPos = this.Get('chart.yaxispos') == 'left' ? this.gutterLeft - 5 : RGraph.GetWidth(this) - this.gutterRight + 5;
755	var align = this.Get('chart.yaxispos') == 'right' ? 'left' : 'right';
756
757	/**
758	* Specific Y labels
759	*/
760	if (typeof(this.Get('chart.ylabels.specific')) == 'object' && this.Get('chart.ylabels.specific')) {
761
762	var labels = this.Get('chart.ylabels.specific');
763
764	for (var i=0; i<this.Get('chart.ylabels.specific').length; ++i) {
765	var y = this.gutterTop + (i * (this.grapharea / labels.length) );
766
767	RGraph.Text(context, font, text_size, xPos, y, labels[i], 'center', align);
768	}
769
770	return;
771	}
772
773	if (numYLabels == 1 \|\| numYLabels == 3 \|\| numYLabels == 5) {
774	if (invert) {
775	RGraph.Text(context, font, text_size, xPos, this.gutterTop, RGraph.number_format(this, 0, units_pre, units_post), 'center', align);
776	RGraph.Text(context, font, text_size, xPos, this.gutterTop + ((RGraph.GetHeight(this) - this.gutterTop - this.gutterBottom) * (5/5) ), RGraph.number_format(this, this.scale[4], units_pre, units_post), 'center', align);
777
778	if (numYLabels >= 5) {
779	RGraph.Text(context, font, text_size, xPos, this.gutterTop + ((RGraph.GetHeight(this) - this.gutterTop - this.gutterBottom) * (2/5) ), RGraph.number_format(this, this.scale[1], units_pre, units_post), 'center', align);
780	RGraph.Text(context, font, text_size, xPos, this.gutterTop + ((RGraph.GetHeight(this) - this.gutterTop - this.gutterBottom) * (4/5) ), RGraph.number_format(this, this.scale[3], units_pre, units_post), 'center', align);
781	}
782
783	if (numYLabels >= 3) {
784	RGraph.Text(context, font, text_size, xPos, this.gutterTop + ((RGraph.GetHeight(this) - this.gutterTop - this.gutterBottom) * (3/5) ), RGraph.number_format(this, this.scale[2], units_pre, units_post), 'center', align);
785	RGraph.Text(context, font, text_size, xPos, this.gutterTop + ((RGraph.GetHeight(this) - this.gutterTop - this.gutterBottom) * (1/5) ), RGraph.number_format(this, this.scale[0], units_pre, units_post), 'center', align);
786	}
787	} else {
788	RGraph.Text(context, font, text_size, xPos, this.gutterTop, RGraph.number_format(this, this.scale[4], units_pre, units_post), 'center', align);
789
790	if (numYLabels >= 5) {
791	RGraph.Text(context, font, text_size, xPos, this.gutterTop + ((RGraph.GetHeight(this) - this.gutterTop - this.gutterBottom) * (1/5) ), RGraph.number_format(this, this.scale[3], units_pre, units_post), 'center', align);
792	RGraph.Text(context, font, text_size, xPos, this.gutterTop + ((RGraph.GetHeight(this) - this.gutterTop - this.gutterBottom) * (3/5) ), RGraph.number_format(this, this.scale[1], units_pre, units_post), 'center', align);
793	}
794
795	if (numYLabels >= 3) {
796	RGraph.Text(context, font, text_size, xPos, this.gutterTop + ((RGraph.GetHeight(this) - this.gutterTop - this.gutterBottom) * (2/5) ), RGraph.number_format(this, this.scale[2], units_pre, units_post), 'center', align);
797	RGraph.Text(context, font, text_size, xPos, this.gutterTop + ((RGraph.GetHeight(this) - this.gutterTop - this.gutterBottom) * (4/5) ), RGraph.number_format(this, this.scale[0], units_pre, units_post), 'center', align);
798	}
799	}
800	} else if (numYLabels == 10) {
801	var interval = (this.grapharea / numYLabels) / 2;
802	if (invert) {
803	for (var i=numYLabels; i>=0; --i) {
804	RGraph.Text(context, font, text_size, xPos,this.gutterTop + ((RGraph.GetHeight(this) - this.gutterTop - this.gutterBottom) * ((10-i)/10) ),
805
806	RGraph.number_format(this,(this.max - (this.max * (i/10))).toFixed((this.Get('chart.scale.decimals'))), units_pre, units_post),
807
808	'center', align);
809	}
810	} else {
811	// 10 Y labels
812	for (var i=0; i<numYLabels; ++i) {
813
814	RGraph.Text(context, font, text_size, xPos,this.gutterTop + ((this.canvas.height - this.gutterTop - this.gutterBottom) * (i/10) ),
815
816	RGraph.number_format(this,
817	(this.max - ((this.max - this.min) * (i/10))).toFixed((this.Get('chart.scale.decimals'))),
818	units_pre,
819	units_post),
820	'center', align);
821	}
822	}
823	} else {
824	alert('[SCATTER SCALE] Number of Y labels can be 1/3/5/10 only');
825	}
826
827	if (this.Get('chart.ymin')) {
828	RGraph.Text(context, font, text_size, xPos, this.canvas.height - this.gutterBottom,RGraph.number_format(this, this.Get('chart.ymin').toFixed(this.Get('chart.scale.decimals')), units_pre, units_post),'center', align);
829	}
830	}
831	}
832
833
834
835
836
837
838	// Put the text on the X axis
839	var graphArea = RGraph.GetWidth(this) - this.gutterLeft - this.gutterRight;
840	var xInterval = graphArea / this.Get('chart.labels').length;
841	var xPos = this.gutterLeft;
842	var yPos = (RGraph.GetHeight(this) - this.gutterBottom) + 15;
843	var labels = this.Get('chart.labels');
844
845	/**
846	* Text angle
847	*/
848	var angle = 0;
849	var valign = null;
850	var halign = 'center';
851
852	if (this.Get('chart.text.angle') > 0) {
853	angle = -1 * this.Get('chart.text.angle');
854	valign = 'center';
855	halign = 'right';
856	yPos -= 10;
857	}
858
859	for (i=0; i<labels.length; ++i) {
860
861	if (typeof(labels[i]) == 'object') {
862
863	if (this.Get('chart.labels.specific.align') == 'center') {
864	var rightEdge = 0;
865
866	if (labels[i+1] && labels[i+1][1]) {
867	rightEdge = labels[i+1][1];
868	} else {
869	rightEdge = this.Get('chart.xmax');
870	}
871
872	var offset = (rightEdge - labels[i][1]) / 2;
873
874	} else {
875	var offset = 0;
876	}
877
878
879	RGraph.Text(context,
880	font,
881	this.Get('chart.text.size'),
882	this.gutterLeft + (graphArea * ((labels[i][1] - xMin + offset) / (this.Get('chart.xmax') - xMin))) + 5,
883	yPos,
884	String(labels[i][0]),
885	valign,
886	angle != 0 ? 'right' : (this.Get('chart.labels.specific.align') == 'center' ? 'center' : 'left'),
887	null,
888	angle
889	);
890
891	/**
892	* Draw the gray indicator line
893	*/
894	this.context.beginPath();
895	this.context.strokeStyle = '#bbb';
896	this.context.moveTo(this.gutterLeft + (graphArea * ((labels[i][1] - xMin)/ (this.Get('chart.xmax') - xMin))), RGraph.GetHeight(this) - this.gutterBottom);
897	this.context.lineTo(this.gutterLeft + (graphArea * ((labels[i][1] - xMin)/ (this.Get('chart.xmax') - xMin))), RGraph.GetHeight(this) - this.gutterBottom + 20);
898	this.context.stroke();
899
900	} else {
901	RGraph.Text(context, font, this.Get('chart.text.size'), xPos + (this.xTickGap / 2), yPos, String(labels[i]), valign, halign, null, angle);
902	}
903
904	// Do this for the next time around
905	xPos += xInterval;
906	}
907
908	/**
909	* Draw the final indicator line
910	*/
911	if (typeof(labels[0]) == 'object') {
912	this.context.beginPath();
913	this.context.strokeStyle = '#bbb';
914	this.context.moveTo(this.gutterLeft + graphArea, RGraph.GetHeight(this) - this.gutterBottom);
915	this.context.lineTo(this.gutterLeft + graphArea, RGraph.GetHeight(this) - this.gutterBottom + 20);
916	this.context.stroke();
917	}
918	}
919
920
921
922
923
924
925
926
927
928
929
930
931
932
933	/**
934	* Draws the actual scatter graph marks
935	*
936	* @param i integer The dataset index
937	*/
938	RGraph.Scatter.prototype.DrawMarks = function (i)
939	{
940	/**
941	* Reset the coords array
942	*/
943	this.coords[i] = [];
944
945	/**
946	* Plot the values
947	*/
948	var xmax = this.Get('chart.xmax');
949	var default_color = this.Get('chart.defaultcolor');
950
951	for (var j=0; j<this.data[i].length; ++j) {
952	/**
953	* This is here because tooltips are optional
954	*/
955	var data_point = this.data[i];
956
957	var xCoord = data_point[j][0];
958	var yCoord = data_point[j][1];
959	var color = data_point[j][2] ? data_point[j][2] : default_color;
960	var tooltip = (data_point[j] && data_point[j][3]) ? data_point[j][3] : null;
961
962
963	this.DrawMark(
964	i,
965	xCoord,
966	yCoord,
967	xmax,
968	this.scale[4],
969	color,
970	tooltip,
971	this.coords[i],
972	data_point
973	);
974	}
975	}
976
977
978	/**
979	* Draws a single scatter mark
980	*/
981	RGraph.Scatter.prototype.DrawMark = function (index, x, y, xMax, yMax, color, tooltip, coords, data)
982	{
983	/**
984	* Inverted Y scale handling
985	*/
986	if (this.Get('chart.ylabels.invert')) {
987	if (typeof(y) == 'number') {
988	y = yMax - y;
989	}
990	}
991
992	var tickmarks = this.Get('chart.tickmarks');
993	var tickSize = this.Get('chart.ticksize');
994	var xMin = this.Get('chart.xmin');
995	var x = ((x - xMin) / (xMax - xMin)) * (RGraph.GetWidth(this) - this.gutterLeft - this.gutterRight);
996	var originalX = x;
997	var originalY = y;
998
999
1000	/**
1001	* This allows chart.tickmarks to be an array
1002	*/
1003
1004	if (tickmarks && typeof(tickmarks) == 'object') {
1005	tickmarks = tickmarks[index];
1006	}
1007
1008
1009	/**
1010	* This allows chart.ticksize to be an array
1011	*/
1012	if (typeof(tickSize) == 'object') {
1013	var tickSize = tickSize[index];
1014	var halfTickSize = tickSize / 2;
1015	} else {
1016	var halfTickSize = tickSize / 2;
1017	}
1018
1019
1020	/**
1021	* This bit is for boxplots only
1022	*/
1023	if ( typeof(y) == 'object'
1024	&& typeof(y[0]) == 'number'
1025	&& typeof(y[1]) == 'number'
1026	&& typeof(y[2]) == 'number'
1027	&& typeof(y[3]) == 'number'
1028	&& typeof(y[4]) == 'number'
1029	) {
1030
1031	var yMin = this.Get('chart.ymin') ? this.Get('chart.ymin') : 0;
1032	this.Set('chart.boxplot', true);
1033	this.graphheight = RGraph.GetHeight(this) - this.gutterTop - this.gutterBottom;
1034
1035	if (this.Get('chart.xaxispos') == 'center') {
1036	this.graphheight /= 2;
1037	}
1038
1039	var y0 = (this.graphheight) - ((y[4] - yMin) / (yMax - yMin)) * (this.graphheight);
1040	var y1 = (this.graphheight) - ((y[3] - yMin) / (yMax - yMin)) * (this.graphheight);
1041	var y2 = (this.graphheight) - ((y[2] - yMin) / (yMax - yMin)) * (this.graphheight);
1042	var y3 = (this.graphheight) - ((y[1] - yMin) / (yMax - yMin)) * (this.graphheight);
1043	var y4 = (this.graphheight) - ((y[0] - yMin) / (yMax - yMin)) * (this.graphheight);
1044
1045	/**
1046	* Inverted labels
1047	*/
1048	if (this.Get('chart.ylabels.invert')) {
1049	y0 = this.graphheight - y0;
1050	y1 = this.graphheight - y1;
1051	y2 = this.graphheight - y2;
1052	y3 = this.graphheight - y3;
1053	y4 = this.graphheight - y4;
1054	}
1055
1056	var col1 = y[5];
1057	var col2 = y[6];
1058
1059	// Override the boxWidth
1060	if (typeof(y[7]) == 'number') {
1061	var boxWidth = y[7];
1062	}
1063
1064	var y = this.graphheight - y2;
1065
1066	} else {
1067	var yMin = this.Get('chart.ymin') ? this.Get('chart.ymin') : 0;
1068	var y = (( (y - yMin) / (yMax - yMin)) * (RGraph.GetHeight(this) - this.gutterTop - this.gutterBottom));
1069	}
1070
1071	/**
1072	* Account for the X axis being at the centre
1073	*/
1074	if (this.Get('chart.xaxispos') == 'center') {
1075	y /= 2;
1076	y += this.halfGraphHeight;
1077	}
1078
1079	// This is so that points are on the graph, and not the gutter
1080	x += this.gutterLeft;
1081	y = RGraph.GetHeight(this) - this.gutterBottom - y;
1082
1083	this.context.beginPath();
1084
1085	// Color
1086	this.context.strokeStyle = color;
1087
1088	/**
1089	* Boxplots
1090	*/
1091	if ( this.Get('chart.boxplot')
1092	&& typeof(y0) == 'number'
1093	&& typeof(y1) == 'number'
1094	&& typeof(y2) == 'number'
1095	&& typeof(y3) == 'number'
1096	&& typeof(y4) == 'number'
1097	) {
1098
1099	var boxWidth = boxWidth ? boxWidth : this.Get('chart.boxplot.width');
1100	var halfBoxWidth = boxWidth / 2;
1101
1102	this.context.beginPath();
1103
1104	// Draw the upper coloured box if a value is specified
1105	if (col1) {
1106	this.context.fillStyle = col1;
1107	this.context.fillRect(x - halfBoxWidth, y1 + this.gutterTop, boxWidth, y2 - y1);
1108	}
1109
1110	// Draw the lower coloured box if a value is specified
1111	if (col2) {
1112	this.context.fillStyle = col2;
1113	this.context.fillRect(x - halfBoxWidth, y2 + this.gutterTop, boxWidth, y3 - y2);
1114	}
1115
1116	this.context.strokeRect(x - halfBoxWidth, y1 + this.gutterTop, boxWidth, y3 - y1);
1117	this.context.stroke();
1118
1119	// Now draw the whiskers
1120	this.context.beginPath();
1121	this.context.moveTo(x - halfBoxWidth, y0 + this.gutterTop);
1122	this.context.lineTo(x + halfBoxWidth, y0 + this.gutterTop);
1123
1124	this.context.moveTo(x, y0 + this.gutterTop);
1125	this.context.lineTo(x, y1 + this.gutterTop);
1126
1127	this.context.moveTo(x - halfBoxWidth, y4 + this.gutterTop);
1128	this.context.lineTo(x + halfBoxWidth, y4 + this.gutterTop);
1129
1130	this.context.moveTo(x, y4 + this.gutterTop);
1131	this.context.lineTo(x, y3 + this.gutterTop);
1132
1133	this.context.stroke();
1134	}
1135
1136
1137	/**
1138	* Draw the tickmark, but not for boxplots
1139	*/
1140	if (!y0 && !y1 && !y2 && !y3 && !y4) {
1141
1142	this.graphheight = RGraph.GetHeight(this) - this.gutterTop - this.gutterBottom;
1143
1144
1145
1146	if (tickmarks == 'circle') {
1147	this.context.arc(x, y, halfTickSize, 0, 6.28, 0);
1148	this.context.fillStyle = color;
1149	this.context.fill();
1150
1151	} else if (tickmarks == 'plus') {
1152
1153	this.context.moveTo(x, y - halfTickSize);
1154	this.context.lineTo(x, y + halfTickSize);
1155	this.context.moveTo(x - halfTickSize, y);
1156	this.context.lineTo(x + halfTickSize, y);
1157	this.context.stroke();
1158
1159	} else if (tickmarks == 'square') {
1160	this.context.strokeStyle = color;
1161	this.context.fillStyle = color;
1162	this.context.fillRect(
1163	x - halfTickSize,
1164	y - halfTickSize,
1165	tickSize,
1166	tickSize
1167	);
1168	//this.context.fill();
1169
1170	} else if (tickmarks == 'cross') {
1171
1172	this.context.moveTo(x - halfTickSize, y - halfTickSize);
1173	this.context.lineTo(x + halfTickSize, y + halfTickSize);
1174	this.context.moveTo(x + halfTickSize, y - halfTickSize);
1175	this.context.lineTo(x - halfTickSize, y + halfTickSize);
1176
1177	this.context.stroke();
1178
1179	/**
1180	* Diamond shape tickmarks
1181	*/
1182	} else if (tickmarks == 'diamond') {
1183	this.context.fillStyle = this.context.strokeStyle;
1184
1185	this.context.moveTo(x, y - halfTickSize);
1186	this.context.lineTo(x + halfTickSize, y);
1187	this.context.lineTo(x, y + halfTickSize);
1188	this.context.lineTo(x - halfTickSize, y);
1189	this.context.lineTo(x, y - halfTickSize);
1190
1191	this.context.fill();
1192	this.context.stroke();
1193
1194	/**
1195	* Custom tickmark style
1196	*/
1197	} else if (typeof(tickmarks) == 'function') {
1198
1199	var graphWidth = RGraph.GetWidth(this) - this.gutterLeft - this.gutterRight
1200	var xVal = ((x - this.gutterLeft) / graphWidth) * xMax;
1201	var yVal = ((this.graphheight - (y - this.gutterTop)) / this.graphheight) * yMax;
1202
1203	tickmarks(this, data, x, y, xVal, yVal, xMax, yMax, color)
1204
1205	/**
1206	* No tickmarks
1207	*/
1208	} else if (tickmarks == null) {
1209
1210	/**
1211	* Unknown tickmark type
1212	*/
1213	} else {
1214	alert('[SCATTER] (' + this.id + ') Unknown tickmark style: ' + tickmarks );
1215	}
1216	}
1217
1218	/**
1219	* Add the tickmark to the coords array
1220	*/
1221	coords.push([x, y, tooltip]);
1222	}
1223
1224
1225	/**
1226	* Draws an optional line connecting the tick marks.
1227	*
1228	* @param i The index of the dataset to use
1229	*/
1230	RGraph.Scatter.prototype.DrawLine = function (i)
1231	{
1232	if (this.Get('chart.line') && this.coords[i].length >= 2) {
1233
1234	this.context.lineCap = 'round';
1235	this.context.lineJoin = 'round';
1236	this.context.lineWidth = this.GetLineWidth(i);// i is the index of the set of coordinates
1237	this.context.strokeStyle = this.Get('chart.line.colors')[i];
1238	this.context.beginPath();
1239
1240	var len = this.coords[i].length;
1241
1242	for (var j=0; j<this.coords[i].length; ++j) {
1243
1244	var xPos = this.coords[i][j][0];
1245	var yPos = this.coords[i][j][1];
1246
1247	if (j == 0) {
1248	this.context.moveTo(xPos, yPos);
1249	} else {
1250
1251	// Stepped?
1252	var stepped = this.Get('chart.line.stepped');
1253
1254	if ( (typeof(stepped) == 'boolean' && stepped)
1255	\|\| (typeof(stepped) == 'object' && stepped[i])
1256	) {
1257	this.context.lineTo(this.coords[i][j][0], this.coords[i][j - 1][1]);
1258	}
1259
1260	this.context.lineTo(xPos, yPos);
1261	}
1262	}
1263
1264	this.context.stroke();
1265	}
1266
1267	/**
1268	* Set the linewidth back to 1
1269	*/
1270	this.context.lineWidth = 1;
1271	}
1272
1273
1274	/**
1275	* Returns the linewidth
1276	*
1277	* @param number i The index of the "line" (/set of coordinates)
1278	*/
1279	RGraph.Scatter.prototype.GetLineWidth = function (i)
1280	{
1281	var linewidth = this.Get('chart.line.linewidth');
1282
1283	if (typeof(linewidth) == 'number') {
1284	return linewidth;
1285
1286	} else if (typeof(linewidth) == 'object') {
1287	if (linewidth[i]) {
1288	return linewidth[i];
1289	} else {
1290	return linewidth[0];
1291	}
1292
1293	alert('[SCATTER] Error! chart.linewidth should be a single number or an array of one or more numbers');
1294	}
1295	}
1296
1297
1298	/**
1299	* Draws vertical bars. Line chart doesn't use a horizontal scale, hence this function
1300	* is not common
1301	*/
1302	RGraph.Scatter.prototype.DrawVBars = function ()
1303	{
1304	var canvas = this.canvas;
1305	var context = this.context;
1306	var vbars = this.Get('chart.background.vbars');
1307	var graphWidth = RGraph.GetWidth(this) - this.gutterLeft - this.gutterRight;
1308
1309	if (vbars) {
1310
1311	var xmax = this.Get('chart.xmax');
1312
1313	for (var i=0; i<vbars.length; ++i) {
1314	var startX = ((vbars[i][0] / xmax) * graphWidth) + this.gutterLeft;
1315	var width = (vbars[i][1] / xmax) * graphWidth;
1316
1317	context.beginPath();
1318	context.fillStyle = vbars[i][2];
1319	context.fillRect(startX, this.gutterTop, width, (RGraph.GetHeight(this) - this.gutterTop - this.gutterBottom));
1320	context.fill();
1321	}
1322	}
1323	}
1324
1325
1326
1327
1328
1329	/**
1330	* Draws in-graph labels.
1331	*
1332	* @param object obj The graph object
1333	*/
1334	RGraph.Scatter.prototype.DrawInGraphLabels = function (obj)
1335	{
1336	var canvas = obj.canvas;
1337	var context = obj.context;
1338	var labels = obj.Get('chart.labels.ingraph');
1339	var labels_processed = [];
1340
1341	// Defaults
1342	var fgcolor = 'black';
1343	var bgcolor = 'white';
1344	var direction = 1;
1345
1346	if (!labels) {
1347	return;
1348	}
1349
1350	/**
1351	* Preprocess the labels array. Numbers are expanded
1352	*/
1353	for (var i=0; i<labels.length; ++i) {
1354	if (typeof(labels[i]) == 'number') {
1355	for (var j=0; j<labels[i]; ++j) {
1356	labels_processed.push(null);
1357	}
1358	} else if (typeof(labels[i]) == 'string' \|\| typeof(labels[i]) == 'object') {
1359	labels_processed.push(labels[i]);
1360
1361	} else {
1362	labels_processed.push('');
1363	}
1364	}
1365
1366	/**
1367	* Turn off any shadow
1368	*/
1369	RGraph.NoShadow(obj);
1370
1371	if (labels_processed && labels_processed.length > 0) {
1372
1373	var i=0;
1374
1375	for (var set=0; set<obj.coords.length; ++set) {
1376	for (var point = 0; point<obj.coords[set].length; ++point) {
1377	if (labels_processed[i]) {
1378	var x = obj.coords[set][point][0];
1379	var y = obj.coords[set][point][1];
1380	var length = typeof(labels_processed[i][4]) == 'number' ? labels_processed[i][4] : 25;
1381
1382	var text_x = x;
1383	var text_y = y - 5 - length;
1384
1385	context.moveTo(x, y - 5);
1386	context.lineTo(x, y - 5 - length);
1387
1388	context.stroke();
1389	context.beginPath();
1390
1391	// This draws the arrow
1392	context.moveTo(x, y - 5);
1393	context.lineTo(x - 3, y - 10);
1394	context.lineTo(x + 3, y - 10);
1395	context.closePath();
1396
1397
1398	context.beginPath();
1399
1400	// Fore ground color
1401	context.fillStyle = (typeof(labels_processed[i]) == 'object' && typeof(labels_processed[i][1]) == 'string') ? labels_processed[i][1] : 'black';
1402
1403	RGraph.Text(context,
1404	obj.Get('chart.text.font'),
1405	obj.Get('chart.text.size'),
1406	text_x,
1407	text_y,
1408	(typeof(labels_processed[i]) == 'object' && typeof(labels_processed[i][0]) == 'string') ? labels_processed[i][0] : labels_processed[i],
1409	'bottom',
1410	'center',
1411	true,
1412	null,
1413	(typeof(labels_processed[i]) == 'object' && typeof(labels_processed[i][2]) == 'string') ? labels_processed[i][2] : 'white');
1414	context.fill();
1415	}
1416
1417	i++;
1418	}
1419	}
1420	}
1421	}
1422
1423
1424	/**
1425	* This function makes it much easier to get the (if any) point that is currently being hovered over.
1426	*
1427	* @param object e The event object
1428	*/
1429	RGraph.Scatter.prototype.getPoint = function (e)
1430	{
1431	var canvas = e.target;
1432	var obj = canvas.__object__;
1433	var context = obj.context;
1434	var context = obj.context;
1435	var mouseXY = RGraph.getMouseXY(e);
1436	var mouseX = mouseXY[0];
1437	var mouseY = mouseXY[1];
1438	var overHotspot = false;
1439	var offset = obj.Get('chart.tooltips.hotspot'); // This is how far the hotspot extends
1440
1441	for (var set=0; set<obj.coords.length; ++set) {
1442	for (var i=0; i<obj.coords[set].length; ++i) {
1443
1444	var xCoord = obj.coords[set][i][0];
1445	var yCoord = obj.coords[set][i][1];
1446
1447	if (mouseX <= (xCoord + offset) &&
1448	mouseX >= (xCoord - offset) &&
1449	mouseY <= (yCoord + offset) &&
1450	mouseY >= (yCoord - offset)) {
1451
1452	return [xCoord, yCoord, set, i, obj.data[set][i][3]];
1453	}
1454	}
1455	}
1456	}
1457
1458
1459	/**
1460	* Draws the above line labels
1461	*/
1462	RGraph.Scatter.prototype.DrawAboveLabels = function ()
1463	{
1464	var context = this.context;
1465	var size = this.Get('chart.labels.above.size');
1466	var font = this.Get('chart.text.font');
1467	var units_pre = this.Get('chart.units.pre');
1468	var units_post = this.Get('chart.units.post');
1469
1470
1471	for (var set=0; set<this.coords.length; ++set) {
1472	for (var point=0; point<this.coords[set].length; ++point) {
1473
1474	var x_val = this.data[set][point][0];
1475	var y_val = this.data[set][point][1];
1476
1477
1478	var x_pos = this.coords[set][point][0];
1479	var y_pos = this.coords[set][point][1];
1480
1481	RGraph.Text(context,
1482	font,
1483	size,
1484	x_pos,
1485	y_pos - 5 - size,
1486	x_val.toFixed(this.Get('chart.labels.above.decimals')) + ', ' + y_val.toFixed(this.Get('chart.labels.above.decimals')),
1487	'center',
1488	'center',
1489	true,
1490	null,
1491	'rgba(255, 255, 255, 0.7)');
1492	}
1493	}
1494	}

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