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6a1aa64f DV |
1 | // Copyright 2006 Dan Vanderkam (danvdk@gmail.com) |
2 | // All Rights Reserved. | |
3 | ||
4 | /** | |
5 | * @fileoverview Subclasses various parts of PlotKit to meet the additional | |
285a6bda | 6 | * needs of Dygraph: grid overlays and error bars |
6a1aa64f DV |
7 | */ |
8 | ||
9 | // Subclass PlotKit.Layout to add: | |
10 | // 1. Sigma/errorBars properties | |
11 | // 2. Copy error terms for PlotKit.CanvasRenderer._renderLineChart | |
12 | ||
13 | /** | |
285a6bda | 14 | * Creates a new DygraphLayout object. Options are the same as those allowed |
6a1aa64f DV |
15 | * by the PlotKit.Layout constructor. |
16 | * @param {Object} options Options for PlotKit.Layout | |
285a6bda | 17 | * @return {Object} The DygraphLayout object |
6a1aa64f | 18 | */ |
efe0829a DV |
19 | DygraphLayout = function(dygraph, options) { |
20 | this.dygraph_ = dygraph; | |
21 | this.options = {}; // TODO(danvk): remove, use attr_ instead. | |
22 | MochiKit.Base.update(this.options, options ? options : {}); | |
23 | this.datasets = new Array(); | |
6a1aa64f | 24 | }; |
efe0829a DV |
25 | |
26 | DygraphLayout.prototype.attr_ = function(name) { | |
27 | return this.dygraph_.attr_(name); | |
28 | }; | |
29 | ||
30 | DygraphLayout.prototype.addDataset = function(setname, set_xy) { | |
31 | this.datasets[setname] = set_xy; | |
32 | }; | |
33 | ||
34 | DygraphLayout.prototype.evaluate = function() { | |
35 | this._evaluateLimits(); | |
36 | this._evaluateLineCharts(); | |
37 | this._evaluateLineTicks(); | |
38 | }; | |
39 | ||
40 | DygraphLayout.prototype._evaluateLimits = function() { | |
41 | this.minxval = this.maxxval = null; | |
42 | for (var name in this.datasets) { | |
43 | var series = this.datasets[name]; | |
44 | var x1 = series[0][0]; | |
45 | if (!this.minxval || x1 < this.minxval) this.minxval = x1; | |
46 | ||
47 | var x2 = series[series.length - 1][0]; | |
48 | if (!this.maxxval || x2 > this.maxxval) this.maxxval = x2; | |
49 | } | |
50 | this.xrange = this.maxxval - this.minxval; | |
51 | this.xscale = (this.xrange != 0 ? 1/this.xrange : 1.0); | |
52 | ||
53 | this.minyval = this.options.yAxis[0]; | |
54 | this.maxyval = this.options.yAxis[1]; | |
55 | this.yrange = this.maxyval - this.minyval; | |
56 | this.yscale = (this.yrange != 0 ? 1/this.yrange : 1.0); | |
57 | }; | |
58 | ||
59 | DygraphLayout.prototype._evaluateLineCharts = function() { | |
60 | // add all the rects | |
61 | this.points = new Array(); | |
62 | for (var setName in this.datasets) { | |
63 | var dataset = this.datasets[setName]; | |
64 | for (var j = 0; j < dataset.length; j++) { | |
65 | var item = dataset[j]; | |
66 | var point = { | |
67 | x: ((parseFloat(item[0]) - this.minxval) * this.xscale), | |
68 | y: 1.0 - ((parseFloat(item[1]) - this.minyval) * this.yscale), | |
69 | xval: parseFloat(item[0]), | |
70 | yval: parseFloat(item[1]), | |
71 | name: setName | |
72 | }; | |
73 | ||
74 | // limit the x, y values so they do not overdraw | |
75 | if (point.y <= 0.0) { | |
76 | point.y = 0.0; | |
77 | } | |
78 | if (point.y >= 1.0) { | |
79 | point.y = 1.0; | |
80 | } | |
81 | if ((point.x >= 0.0) && (point.x <= 1.0)) { | |
82 | this.points.push(point); | |
83 | } | |
84 | } | |
85 | } | |
86 | }; | |
87 | ||
88 | DygraphLayout.prototype._evaluateLineTicks = function() { | |
89 | this.xticks = new Array(); | |
90 | for (var i = 0; i < this.options.xTicks.length; i++) { | |
91 | var tick = this.options.xTicks[i]; | |
92 | var label = tick.label; | |
93 | var pos = this.xscale * (tick.v - this.minxval); | |
94 | if ((pos >= 0.0) && (pos <= 1.0)) { | |
95 | this.xticks.push([pos, label]); | |
96 | } | |
97 | } | |
98 | ||
99 | this.yticks = new Array(); | |
100 | for (var i = 0; i < this.options.yTicks.length; i++) { | |
101 | var tick = this.options.yTicks[i]; | |
102 | var label = tick.label; | |
103 | var pos = 1.0 - (this.yscale * (tick.v - this.minyval)); | |
104 | if ((pos >= 0.0) && (pos <= 1.0)) { | |
105 | this.yticks.push([pos, label]); | |
106 | } | |
107 | } | |
108 | }; | |
109 | ||
6a1aa64f DV |
110 | |
111 | /** | |
112 | * Behaves the same way as PlotKit.Layout, but also copies the errors | |
113 | * @private | |
114 | */ | |
285a6bda | 115 | DygraphLayout.prototype.evaluateWithError = function() { |
6a1aa64f DV |
116 | this.evaluate(); |
117 | if (!this.options.errorBars) return; | |
118 | ||
119 | // Copy over the error terms | |
120 | var i = 0; // index in this.points | |
121 | for (var setName in this.datasets) { | |
122 | var j = 0; | |
123 | var dataset = this.datasets[setName]; | |
124 | if (PlotKit.Base.isFuncLike(dataset)) continue; | |
125 | for (var j = 0; j < dataset.length; j++, i++) { | |
126 | var item = dataset[j]; | |
127 | var xv = parseFloat(item[0]); | |
128 | var yv = parseFloat(item[1]); | |
129 | ||
130 | if (xv == this.points[i].xval && | |
131 | yv == this.points[i].yval) { | |
132 | this.points[i].errorMinus = parseFloat(item[2]); | |
133 | this.points[i].errorPlus = parseFloat(item[3]); | |
134 | } | |
135 | } | |
136 | } | |
137 | }; | |
138 | ||
139 | /** | |
140 | * Convenience function to remove all the data sets from a graph | |
141 | */ | |
285a6bda | 142 | DygraphLayout.prototype.removeAllDatasets = function() { |
6a1aa64f DV |
143 | delete this.datasets; |
144 | this.datasets = new Array(); | |
145 | }; | |
146 | ||
147 | /** | |
148 | * Change the values of various layout options | |
149 | * @param {Object} new_options an associative array of new properties | |
150 | */ | |
285a6bda | 151 | DygraphLayout.prototype.updateOptions = function(new_options) { |
6a1aa64f DV |
152 | MochiKit.Base.update(this.options, new_options ? new_options : {}); |
153 | }; | |
154 | ||
155 | // Subclass PlotKit.CanvasRenderer to add: | |
156 | // 1. X/Y grid overlay | |
157 | // 2. Ability to draw error bars (if required) | |
158 | ||
159 | /** | |
160 | * Sets some PlotKit.CanvasRenderer options | |
161 | * @param {Object} element The canvas to attach to | |
285a6bda | 162 | * @param {Layout} layout The DygraphLayout object for this graph. |
6a1aa64f DV |
163 | * @param {Object} options Options to pass on to CanvasRenderer |
164 | */ | |
9317362d DV |
165 | DygraphCanvasRenderer = function(dygraph, element, layout, options) { |
166 | // TODO(danvk): remove options, just use dygraph.attr_. | |
9317362d | 167 | this.dygraph_ = dygraph; |
fbe31dc8 DV |
168 | |
169 | // default options | |
170 | this.options = { | |
171 | "strokeWidth": 0.5, | |
172 | "drawXAxis": true, | |
173 | "drawYAxis": true, | |
174 | "axisLineColor": Color.blackColor(), | |
175 | "axisLineWidth": 0.5, | |
176 | "axisTickSize": 3, | |
177 | "axisLabelColor": Color.blackColor(), | |
178 | "axisLabelFont": "Arial", | |
179 | "axisLabelFontSize": 9, | |
180 | "axisLabelWidth": 50, | |
181 | "drawYGrid": true, | |
182 | "drawXGrid": true, | |
183 | "gridLineColor": MochiKit.Color.Color.grayColor() | |
184 | }; | |
6a1aa64f DV |
185 | MochiKit.Base.update(this.options, options); |
186 | ||
fbe31dc8 DV |
187 | this.layout = layout; |
188 | this.element = MochiKit.DOM.getElement(element); | |
189 | this.container = this.element.parentNode; | |
190 | ||
191 | // Stuff relating to Canvas on IE support | |
192 | this.isIE = PlotKit.Base.excanvasSupported(); | |
193 | ||
194 | if (this.isIE && !isNil(G_vmlCanvasManager)) { | |
195 | this.IEDelay = 0.5; | |
196 | this.maxTries = 5; | |
197 | this.renderDelay = null; | |
198 | this.clearDelay = null; | |
199 | this.element = G_vmlCanvasManager.initElement(this.element); | |
200 | } | |
201 | ||
202 | this.height = this.element.height; | |
203 | this.width = this.element.width; | |
204 | ||
205 | // --- check whether everything is ok before we return | |
206 | if (!this.isIE && !(DygraphCanvasRenderer.isSupported(this.element))) | |
207 | throw "Canvas is not supported."; | |
208 | ||
209 | // internal state | |
210 | this.xlabels = new Array(); | |
211 | this.ylabels = new Array(); | |
212 | ||
213 | this.area = { | |
214 | x: this.options.yAxisLabelWidth + 2 * this.options.axisTickSize, | |
215 | y: 0 | |
216 | }; | |
217 | this.area.w = this.width - this.area.x - this.options.rightGap; | |
218 | this.area.h = this.height - this.options.axisLabelFontSize - | |
219 | 2 * this.options.axisTickSize; | |
220 | ||
221 | MochiKit.DOM.updateNodeAttributes(this.container, | |
222 | {"style":{ "position": "relative", "width": this.width + "px"}}); | |
223 | }; | |
224 | ||
225 | DygraphCanvasRenderer.prototype.clear = function() { | |
226 | if (this.isIE) { | |
227 | // VML takes a while to start up, so we just poll every this.IEDelay | |
228 | try { | |
229 | if (this.clearDelay) { | |
230 | this.clearDelay.cancel(); | |
231 | this.clearDelay = null; | |
232 | } | |
233 | var context = this.element.getContext("2d"); | |
234 | } | |
235 | catch (e) { | |
236 | this.clearDelay = MochiKit.Async.wait(this.IEDelay); | |
237 | this.clearDelay.addCallback(bind(this.clear, this)); | |
238 | return; | |
239 | } | |
240 | } | |
241 | ||
242 | var context = this.element.getContext("2d"); | |
243 | context.clearRect(0, 0, this.width, this.height); | |
244 | ||
245 | MochiKit.Iter.forEach(this.xlabels, MochiKit.DOM.removeElement); | |
246 | MochiKit.Iter.forEach(this.ylabels, MochiKit.DOM.removeElement); | |
247 | this.xlabels = new Array(); | |
248 | this.ylabels = new Array(); | |
249 | }; | |
250 | ||
251 | ||
252 | DygraphCanvasRenderer.isSupported = function(canvasName) { | |
253 | var canvas = null; | |
254 | try { | |
255 | if (MochiKit.Base.isUndefinedOrNull(canvasName)) | |
256 | canvas = MochiKit.DOM.CANVAS({}); | |
257 | else | |
258 | canvas = MochiKit.DOM.getElement(canvasName); | |
259 | var context = canvas.getContext("2d"); | |
260 | } | |
261 | catch (e) { | |
262 | var ie = navigator.appVersion.match(/MSIE (\d\.\d)/); | |
263 | var opera = (navigator.userAgent.toLowerCase().indexOf("opera") != -1); | |
264 | if ((!ie) || (ie[1] < 6) || (opera)) | |
265 | return false; | |
266 | return true; | |
267 | } | |
268 | return true; | |
6a1aa64f | 269 | }; |
6a1aa64f DV |
270 | |
271 | /** | |
272 | * Draw an X/Y grid on top of the existing plot | |
273 | */ | |
285a6bda | 274 | DygraphCanvasRenderer.prototype.render = function() { |
6a1aa64f DV |
275 | // Draw the new X/Y grid |
276 | var ctx = this.element.getContext("2d"); | |
277 | if (this.options.drawYGrid) { | |
278 | var ticks = this.layout.yticks; | |
279 | ctx.save(); | |
280 | ctx.strokeStyle = this.options.gridLineColor.toRGBString(); | |
281 | ctx.lineWidth = this.options.axisLineWidth; | |
282 | for (var i = 0; i < ticks.length; i++) { | |
283 | var x = this.area.x; | |
284 | var y = this.area.y + ticks[i][0] * this.area.h; | |
285 | ctx.beginPath(); | |
286 | ctx.moveTo(x, y); | |
287 | ctx.lineTo(x + this.area.w, y); | |
288 | ctx.closePath(); | |
289 | ctx.stroke(); | |
290 | } | |
291 | } | |
292 | ||
293 | if (this.options.drawXGrid) { | |
294 | var ticks = this.layout.xticks; | |
295 | ctx.save(); | |
296 | ctx.strokeStyle = this.options.gridLineColor.toRGBString(); | |
297 | ctx.lineWidth = this.options.axisLineWidth; | |
298 | for (var i=0; i<ticks.length; i++) { | |
299 | var x = this.area.x + ticks[i][0] * this.area.w; | |
300 | var y = this.area.y + this.area.h; | |
301 | ctx.beginPath(); | |
302 | ctx.moveTo(x, y); | |
303 | ctx.lineTo(x, this.area.y); | |
304 | ctx.closePath(); | |
305 | ctx.stroke(); | |
306 | } | |
307 | } | |
2ce09b19 DV |
308 | |
309 | // Do the ordinary rendering, as before | |
310 | // TODO(danvk) Call super.render() | |
311 | this._renderLineChart(); | |
fbe31dc8 DV |
312 | this._renderAxis(); |
313 | }; | |
314 | ||
315 | ||
316 | DygraphCanvasRenderer.prototype._renderAxis = function() { | |
317 | if (!this.options.drawXAxis && !this.options.drawYAxis) | |
318 | return; | |
319 | ||
320 | var context = this.element.getContext("2d"); | |
321 | ||
322 | var labelStyle = {"style": | |
323 | {"position": "absolute", | |
324 | "fontSize": this.options.axisLabelFontSize + "px", | |
325 | "zIndex": 10, | |
326 | "color": this.options.axisLabelColor.toRGBString(), | |
327 | "width": this.options.axisLabelWidth + "px", | |
328 | "overflow": "hidden" | |
329 | } | |
330 | }; | |
331 | ||
332 | // axis lines | |
333 | context.save(); | |
334 | context.strokeStyle = this.options.axisLineColor.toRGBString(); | |
335 | context.lineWidth = this.options.axisLineWidth; | |
336 | ||
337 | ||
338 | if (this.options.drawYAxis) { | |
339 | if (this.layout.yticks) { | |
340 | var drawTick = function(tick) { | |
341 | if (typeof(tick) == "function") return; | |
342 | var x = this.area.x; | |
343 | var y = this.area.y + tick[0] * this.area.h; | |
344 | context.beginPath(); | |
345 | context.moveTo(x, y); | |
346 | context.lineTo(x - this.options.axisTickSize, y); | |
347 | context.closePath(); | |
348 | context.stroke(); | |
349 | ||
350 | var label = DIV(labelStyle, tick[1]); | |
351 | var top = (y - this.options.axisLabelFontSize / 2); | |
352 | if (top < 0) top = 0; | |
353 | ||
354 | if (top + this.options.axisLabelFontSize + 3 > this.height) { | |
355 | label.style.bottom = "0px"; | |
356 | } else { | |
357 | label.style.top = top + "px"; | |
358 | } | |
359 | label.style.left = "0px"; | |
360 | label.style.textAlign = "right"; | |
361 | label.style.width = this.options.yAxisLabelWidth + "px"; | |
362 | MochiKit.DOM.appendChildNodes(this.container, label); | |
363 | this.ylabels.push(label); | |
364 | }; | |
365 | ||
366 | MochiKit.Iter.forEach(this.layout.yticks, bind(drawTick, this)); | |
367 | ||
368 | // The lowest tick on the y-axis often overlaps with the leftmost | |
369 | // tick on the x-axis. Shift the bottom tick up a little bit to | |
370 | // compensate if necessary. | |
371 | var bottomTick = this.ylabels[0]; | |
372 | var fontSize = this.options.axisLabelFontSize; | |
373 | var bottom = parseInt(bottomTick.style.top) + fontSize; | |
374 | if (bottom > this.height - fontSize) { | |
375 | bottomTick.style.top = (parseInt(bottomTick.style.top) - | |
376 | fontSize / 2) + "px"; | |
377 | } | |
378 | } | |
379 | ||
380 | context.beginPath(); | |
381 | context.moveTo(this.area.x, this.area.y); | |
382 | context.lineTo(this.area.x, this.area.y + this.area.h); | |
383 | context.closePath(); | |
384 | context.stroke(); | |
385 | } | |
386 | ||
387 | if (this.options.drawXAxis) { | |
388 | if (this.layout.xticks) { | |
389 | var drawTick = function(tick) { | |
390 | if (typeof(dataset) == "function") return; | |
391 | ||
392 | var x = this.area.x + tick[0] * this.area.w; | |
393 | var y = this.area.y + this.area.h; | |
394 | context.beginPath(); | |
395 | context.moveTo(x, y); | |
396 | context.lineTo(x, y + this.options.axisTickSize); | |
397 | context.closePath(); | |
398 | context.stroke(); | |
399 | ||
400 | var label = DIV(labelStyle, tick[1]); | |
401 | label.style.textAlign = "center"; | |
402 | label.style.bottom = "0px"; | |
403 | ||
404 | var left = (x - this.options.axisLabelWidth/2); | |
405 | if (left + this.options.axisLabelWidth > this.width) { | |
406 | left = this.width - this.options.xAxisLabelWidth; | |
407 | label.style.textAlign = "right"; | |
408 | } | |
409 | if (left < 0) { | |
410 | left = 0; | |
411 | label.style.textAlign = "left"; | |
412 | } | |
413 | ||
414 | label.style.left = left + "px"; | |
415 | label.style.width = this.options.xAxisLabelWidth + "px"; | |
416 | MochiKit.DOM.appendChildNodes(this.container, label); | |
417 | this.xlabels.push(label); | |
418 | }; | |
419 | ||
420 | MochiKit.Iter.forEach(this.layout.xticks, bind(drawTick, this)); | |
421 | } | |
422 | ||
423 | context.beginPath(); | |
424 | context.moveTo(this.area.x, this.area.y + this.area.h); | |
425 | context.lineTo(this.area.x + this.area.w, this.area.y + this.area.h); | |
426 | context.closePath(); | |
427 | context.stroke(); | |
428 | } | |
429 | ||
430 | context.restore(); | |
6a1aa64f DV |
431 | }; |
432 | ||
fbe31dc8 | 433 | |
6a1aa64f DV |
434 | /** |
435 | * Overrides the CanvasRenderer method to draw error bars | |
436 | */ | |
285a6bda | 437 | DygraphCanvasRenderer.prototype._renderLineChart = function() { |
6a1aa64f DV |
438 | var context = this.element.getContext("2d"); |
439 | var colorCount = this.options.colorScheme.length; | |
440 | var colorScheme = this.options.colorScheme; | |
441 | var setNames = MochiKit.Base.keys(this.layout.datasets); | |
442 | var errorBars = this.layout.options.errorBars; | |
443 | var setCount = setNames.length; | |
444 | var bind = MochiKit.Base.bind; | |
445 | var partial = MochiKit.Base.partial; | |
446 | ||
447 | //Update Points | |
448 | var updatePoint = function(point) { | |
449 | point.canvasx = this.area.w * point.x + this.area.x; | |
450 | point.canvasy = this.area.h * point.y + this.area.y; | |
451 | } | |
452 | MochiKit.Iter.forEach(this.layout.points, updatePoint, this); | |
453 | ||
454 | // create paths | |
9317362d | 455 | var isOK = function(x) { return x && !isNaN(x); }; |
6a1aa64f DV |
456 | var makePath = function(ctx) { |
457 | for (var i = 0; i < setCount; i++) { | |
458 | var setName = setNames[i]; | |
459 | var color = colorScheme[i%colorCount]; | |
460 | var strokeX = this.options.strokeColorTransform; | |
461 | ||
462 | // setup graphics context | |
463 | context.save(); | |
464 | context.strokeStyle = color.toRGBString(); | |
465 | context.lineWidth = this.options.strokeWidth; | |
6a1aa64f | 466 | var point = this.layout.points[0]; |
9317362d DV |
467 | var pointSize = this.dygraph_.attr_("pointSize"); |
468 | var prevX = null, prevY = null; | |
469 | var drawPoints = this.dygraph_.attr_("drawPoints"); | |
470 | var points = this.layout.points; | |
471 | for (var j = 0; j < points.length; j++) { | |
472 | var point = points[j]; | |
6a1aa64f | 473 | if (point.name == setName) { |
9317362d | 474 | if (!isOK(point.canvasy)) { |
9a730910 | 475 | // this will make us move to the next point, not draw a line to it. |
9317362d | 476 | prevX = prevY = null; |
9a730910 | 477 | } else { |
9317362d DV |
478 | // A point is "isolated" if it is non-null but both the previous |
479 | // and next points are null. | |
480 | var isIsolated = (!prevX && (j == points.length - 1 || | |
481 | !isOK(points[j+1].canvasy))); | |
482 | ||
483 | if (!prevX) { | |
484 | prevX = point.canvasx; | |
485 | prevY = point.canvasy; | |
9a730910 | 486 | } else { |
9317362d DV |
487 | ctx.beginPath(); |
488 | ctx.moveTo(prevX, prevY); | |
489 | prevX = point.canvasx; | |
490 | prevY = point.canvasy; | |
491 | ctx.lineTo(prevX, prevY); | |
492 | ctx.stroke(); | |
493 | } | |
494 | ||
495 | if (drawPoints || isIsolated) { | |
496 | ctx.beginPath(); | |
497 | ctx.fillStyle = color.toRGBString(); | |
498 | ctx.arc(point.canvasx, point.canvasy, pointSize, 0, 360, false); | |
499 | ctx.fill(); | |
9a730910 DV |
500 | } |
501 | } | |
6a1aa64f | 502 | } |
9317362d | 503 | } |
6a1aa64f DV |
504 | } |
505 | }; | |
506 | ||
507 | var makeErrorBars = function(ctx) { | |
508 | for (var i = 0; i < setCount; i++) { | |
509 | var setName = setNames[i]; | |
510 | var color = colorScheme[i % colorCount]; | |
511 | var strokeX = this.options.strokeColorTransform; | |
512 | ||
513 | // setup graphics context | |
514 | context.save(); | |
515 | context.strokeStyle = color.toRGBString(); | |
516 | context.lineWidth = this.options.strokeWidth; | |
517 | var prevX = -1; | |
518 | var prevYs = [-1, -1]; | |
519 | var count = 0; | |
520 | var yscale = this.layout.yscale; | |
521 | var errorTrapezoid = function(ctx_,point) { | |
522 | count++; | |
523 | if (point.name == setName) { | |
5011e7a1 DV |
524 | if (!point.y || isNaN(point.y)) { |
525 | prevX = -1; | |
526 | return; | |
527 | } | |
6a1aa64f DV |
528 | var newYs = [ point.y - point.errorPlus * yscale, |
529 | point.y + point.errorMinus * yscale ]; | |
530 | newYs[0] = this.area.h * newYs[0] + this.area.y; | |
531 | newYs[1] = this.area.h * newYs[1] + this.area.y; | |
532 | if (prevX >= 0) { | |
533 | ctx_.moveTo(prevX, prevYs[0]); | |
534 | ctx_.lineTo(point.canvasx, newYs[0]); | |
535 | ctx_.lineTo(point.canvasx, newYs[1]); | |
536 | ctx_.lineTo(prevX, prevYs[1]); | |
537 | ctx_.closePath(); | |
538 | } | |
539 | prevYs[0] = newYs[0]; | |
540 | prevYs[1] = newYs[1]; | |
541 | prevX = point.canvasx; | |
542 | } | |
543 | }; | |
544 | // should be same color as the lines | |
545 | var err_color = color.colorWithAlpha(0.15); | |
546 | ctx.fillStyle = err_color.toRGBString(); | |
547 | ctx.beginPath(); | |
548 | MochiKit.Iter.forEach(this.layout.points, partial(errorTrapezoid, ctx), this); | |
549 | ctx.fill(); | |
550 | } | |
551 | }; | |
552 | ||
553 | if (errorBars) | |
554 | bind(makeErrorBars, this)(context); | |
555 | bind(makePath, this)(context); | |
556 | context.restore(); | |
557 | }; |