1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
|
<!DOCTYPE html>
<html>
<head>
<meta http-equiv="X-UA-Compatible" content="chrome=1">
<!--
/**
* o------------------------------------------------------------------------------o
* | This file is part of the RGraph package - you can learn more at: |
* | |
* | http://www.rgraph.net |
* | |
* | This package is licensed under the RGraph license. For all kinds of business |
* | purposes there is a small one-time licensing fee to pay and for non |
* | commercial purposes it is free to use. You can read the full license here: |
* | |
* | http://www.rgraph.net/LICENSE.txt |
* o------------------------------------------------------------------------------o
*/
-->
<title>RGraph: HTML5 Javascript charts library - meter charts documentation</title>
<meta name="keywords" content="rgraph html5 canvas docs meter chart" />
<meta name="description" content="RGraph: HTML5 Javascript charts library - Documentation about Meter charts" />
<meta property="og:title" content="RGraph: HTML5 Javascript charts library" />
<meta property="og:description" content="A charts library based on the HTML5 canvas tag" />
<meta property="og:image" content="http://www.rgraph.net/images/logo.jpg"/>
<link rel="stylesheet" href="../css/website.css" type="text/css" media="screen" />
<link rel="icon" type="image/png" href="../images/favicon.png">
<!-- Place this tag in your head or just before your close body tag -->
<script type="text/javascript" src="https://apis.google.com/js/plusone.js"></script>
<script>
var _gaq = _gaq || [];
_gaq.push(['_setAccount', 'UA-54706-2']);
_gaq.push(['_trackPageview']);
(function() {
var ga = document.createElement('script'); ga.type = 'text/javascript'; ga.async = true;
ga.src = ('https:' == document.location.protocol ? 'https://ssl' : 'http://www') + '.google-analytics.com/ga.js';
var s = document.getElementsByTagName('script')[0]; s.parentNode.insertBefore(ga, s);
})();
</script>
</head>
<body>
<!-- Social networking buttons -->
<div id="social_icons" class="warning" style="border-radius: 10px; top: 1px; position: fixed; width: 120px; height: 20px">
<!-- <a title="Bookmark with delicious" href="http://delicious.com/save?jump=close&v=4&noui&jump=close&url=http://www.rgraph.net¬es=RGraph%20is%20a%20HTML5%20based%20javascript%20charts%20library%20supporting%20a%20wide%20range%20of%20different%20chart%20types&title=RGraph:%20Javascript%20charts%20%26%20graph%20library" target="_blank"><img src="../images/delicious.png" alt="Bookmark with delicious" width="22" height="22" border="0" style="position: relative; top: 1px" /></a> -->
<a href="http://twitter.com/home/?status=RGraph%3A%20Javascript+charts+library+http%3A%2F%2Fwww.rgraph.net+%23rgraph+%23html5+%23canvas+%23javascript+%23charts+@_rgraph" target="_blank" title="Mention RGraph on Twitter"><img src="../images/twitter.png" alt="Mention RGraph on Twitter"/></a>
<iframe src="http://www.facebook.com/plugins/like.php?app_id=253862424642173&href=http%3A%2F%2Fwww.rgraph.net&send=false&layout=button_count&width=450&show_faces=false&action=like&colorscheme=light&font=arial&height=21" scrolling="no" frameborder="0" style="width: 80px; height:21px; position: relative; top: 1px"></iframe>
</div>
<script>
// Opera fix
if (navigator.userAgent.indexOf('Opera') == -1) {
document.getElementById("social_icons").style.position = 'fixed';
}
</script>
<div id="google_plusone">
<!-- Place this tag where you want the +1 button to render -->
<g:plusone href="http://www.rgraph.net"></g:plusone>
</div>
<!-- Social networking buttons -->
<div id="breadcrumb">
<a href="../index.html">RGraph: HTML5 Javascript charts library</a>
>
<a href="index.html">Documentation</a>
>
Meter charts
</div>
<h1>RGraph: <span>HTML5 Javascript charts library</span> - Meter charts documentation</h1>
<script>
if (RGraph.isIE8()) {
document.write('<div style="background-color: #fee; border: 2px dashed red; padding: 5px"><b>Important</b><br /><br /> Internet Explorer 8 does not natively support the HTML5 canvas tag, so if you want to see the charts, you can either:<ul><li>Install <a href="http://code.google.com/chrome/chromeframe/">Google Chrome Frame</a></li><li>Use ExCanvas. This is provided in the RGraph Archive.</li><li>Use another browser entirely. Your choices are Firefox 3.5+, Chrome 2+, Safari 4+ or Opera 10.5+. </li></ul> <b>Note:</b> Internet Explorer 9 fully supports the canvas tag.</div>');
}
</script>
<p>
These are Meter charts. Similar to half the Odometer. The difference is purely visual, but may well be more suited to
a control panel type application.
</p>
<p>
The example file is <a href="../examples/meter.html">here</a>.
</p>
<pre class="code">
<script>
window.onload = function ()
{
var meter = new RGraph.Meter('myCanvas', 50, 100, 60);
meter.Set('chart.contextmenu', [
['Show palette', RGraph.Showpalette],
['Clear annotations', function () {RGraph.Clear(meter.canvas); meter.Draw();}],
null,
['Cancel', function () {}]
]);
meter.Set('chart.annotatable', true);
meter.Set('chart.label.position', 'inside');
meter.Set('chart.title', 'A sample measurement');
meter.Set('chart.title.vpos', 0.5);
meter.Set('chart.units.post', 'k');
meter.Set('chart.red.start', 0);
meter.Set('chart.red.end', 3);
meterSet('chart.yellow.start', 3);
meter.Set('chart.yellow.end', 6);
meter.Set('chart.green.start', 6);
meter.Set('chart.green.end', 10);
meter.Draw();
}
</script>
</pre>
<h2>Properties</h2>
<p>
You can use these properties to control how the Meter apears. You can set them by using the Set() method. Eg:
</p>
<p>
<b>myMeter.Set('name', 'value');</b>
</p>
<ul>
<li><a href="#margins">Margins</a></li>
<li><a href="#colors">Colors</a></li>
<li><a href="#labels and text">Labels and text</a></li>
<li><a href="#titles">Titles</a></li>
<li><a href="#scale">Scale</a></li>
<li><a href="#interactive features">Interactive features</a></li>
<li><a href="#shadow">Shadow</a></li>
<li><a href="#zoom">Zoom</a></li>
<li><a href="#miscellaneous">Miscellaneous</a></li>
</ul>
<a name="margins"></a>
<h3 style="border: 1px solid #aaa; background-color: #eee; font-style: italic; padding: 5px; -moz-border-radius: 10px; -webkit-border-radius: 10px; border-radius: 10px">Margins</h3>
<a name="chart.gutter.left"></a>
<b>chart.gutter.left</b><br />
The left gutter of the chart, (the gutter is where the labels and title are)).<br />
<i>Default: 25</i><br /><br />
<a name="chart.gutter.right"></a>
<b>chart.gutter.right</b><br />
The right gutter of the chart, (the gutter is where the labels and title are).<br />
<i>Default: 25</i><br /><br />
<a name="chart.gutter.top"></a>
<b>chart.gutter.top</b><br />
The top gutter of the chart, (the gutter is where the labels and title are).<br />
<i>Default: 25</i><br /><br />
<a name="chart.gutter.bottom"></a>
<b>chart.gutter.bottom</b><br />
The bottom gutter of the chart, (the gutter is where the labels and title are).<br />
<i>Default: 25</i><br /><br />
<a name="colors"></a>
<h3 style="border: 1px solid #aaa; background-color: #eee; font-style: italic; padding: 5px; -moz-border-radius: 10px; -webkit-border-radius: 10px; border-radius: 10px">Colors</h3>
<a name="chart.strokestyle"></a>
<b>chart.strokestyle</b><br />
The color of the bits separating the segements. By setting this to white you can get a separation effect.<br />
<i>Default: null</i><br /><br />
<a name="chart.border.color"></a>
<b>chart.border.color</b><br />
The color of the outline (including tickmarks).<br />
<i>Default: black</i><br /><br />
<a name="chart.green.start"></a>
<b>chart.green.start</b><br />
The value that the green area should begin at. <br /><i>Default: 35% of the maximum value</i><br /><br />
<a name="chart.green.end"></a>
<b>chart.green.end</b><br />
The value that the green area should end at. <br /><i>Default: The maximum value</i><br /><br />
<a name="chart.green.color"></a>
<b>chart.green.color</b><br />
The color of the green area, (can be any color).. <br /><i>Default: #207A20</i><br /><br />
<a name="chart.yellow.start"></a>
<b>chart.yellow.start</b><br />
The value that the yellow area should begin at. <br /><i>Default: 10% of the maximum value</i><br /><br />
<a name="chart.yellow.end"></a>
<b>chart.yellow.end</b><br />
The value that the yellow area should end at. <br /><i>Default: 35% of the maximum value</i><br /><br />
<a name="chart.green.color"></a>
<b>chart.green.color</b><br />
The color of the yellow area, (can be any color).. <br /><i>Default: #D0AC41</i><br /><br />
<a name="chart.red.start"></a>
<b>chart.red.start</b><br />
The value that the red area should begin at. <br /><i>Default: The minimum value</i><br /><br />
<a name="chart.red.end"></a>
<b>chart.red.end</b><br />
The value that the red area should end at. <br /><i>Default: 10% of the maximum value</i><br /><br />
<a name="chart.red.color"></a>
<b>chart.red.color</b><br />
The color of the red area, (can be any color).. <br /><i>Default: #9E1E1E</i><br /><br />
<a name="labels and text"></a>
<h3 style="border: 1px solid #aaa; background-color: #eee; font-style: italic; padding: 5px; -moz-border-radius: 10px; -webkit-border-radius: 10px; border-radius: 10px">Labels and text</h3> <a name="chart.text.color"></a>
<b>chart.text.color</b><br />
The color of the labels. <br />
<i>Default: black</i><br /><br />
<a name="chart.text.size"></a>
<b>chart.text.size</b><br />
The size (in points) of the labels. <br /><i>Default: 10</i><br /><br />
<a name="chart.text.font"></a>
<b>chart.text.font</b><br />
The font used to render the text.<br />
<i>Default: Verdana</i><br /><br />
<a name="chart.value.text"></a>
<b>chart.value.text</b><br />
This option controls whether the value of the Meter is shown in text.<br />
<i>Default: false</i><br /><br />
<a name="chart.value.text.decimals"></a>
<b>chart.value.text.decimals</b><br />
The amount of decimals shown in the text label.<br />
<i>Default: 0</i><br /><br />
<a name="chart.value.text.units.pre"></a>
<b>chart.value.text.units.pre</b><br />
The units (before the value) shown in the text label.<br />
<i>Default: None (an empty string)</i><br /><br />
<a name="chart.value.text.units.post"></a>
<b>chart.value.text.units.post</b><br />
The units (after the value) shown in the text label.<br />
<i>Default: None (an empty string)</i><br /><br />
<a name="chart.labels"></a>
<b>chart.labels</b><br />
Whether the labels are shown or not.<br />
<i>Default: true</i><br /><br />
<a name="titles"></a>
<h3 style="border: 1px solid #aaa; background-color: #eee; font-style: italic; padding: 5px; -moz-border-radius: 10px; -webkit-border-radius: 10px; border-radius: 10px">Titles</h3>
<a name="chart.title"></a>
<b>chart.title</b><br />
The title of the chart, if any. <br /><i>Default: null</i><br /><br />
<a name="chart.title.font"></a>
<b>chart.title.font</b><br />
The font that the title is rendered in. If not specified the chart.text.font setting is used (usually Verdana)<br />
<i>Default: null</i><br /><br />
<a name="chart.title.size"></a>
<b>chart.title.size</b><br />
The size of the title. If not specified the size is usually 2pt bigger than the chart.text.size setting.<br />
<i>Default: null</i><br /><br />
<a name="chart.title.bold"></a>
<b>chart.title.bold</b><br />
Whather the title is bold or not.<br />
<i>Default: true</i><br /><br />
<a name="chart.title.background"></a>
<b>chart.title.background</b><br />
The background color (if any) for the title.<br />
<i>Default: null</i><br /><br />
<a name="chart.title.color"></a>
<b>chart.title.color</b><br />
The color of the title.<br /> <i>Default: black</i><br /><br />
<a name="chart.title.hpos"></a>
<b>chart.title.hpos</b><br />
This allows you to completely override the horizontal positioning of the title. It should be a number between 0 and 1, and is multiplied with the whole width of the canvas and then used as the horizontal position. <br /><i>Default: null</i><br /><br />
<a name="chart.title.vpos"></a>
<b>chart.title.vpos</b><br />
This allows you to completely override the vertical positioning of the title. It should be a number between 0 and 1, and is multiplied with the gutter and then used as the vertical position. It can be useful if you need to have a large gutter.<br /><i>Default: null</i><br /><br />
<a name="scale"></a>
<h3 style="border: 1px solid #aaa; background-color: #eee; font-style: italic; padding: 5px; -moz-border-radius: 10px; -webkit-border-radius: 10px; border-radius: 10px">Scale</h3>
<a name="chart.units.pre"></a>
<b>chart.units.pre</b><br />
The units that the labels are measured in. This string is displayed BEFORE the actual number, allowing you to
specify values such as "$50".<br />
<i>Default: none</i><br /><br />
<a name="chart.units.post"></a>
<b>chart.units.post</b><br />
The units that the labels are measured in. This string is displayed AFTER the actual number, allowing you to specify
values such as "50ms".<br />
<i>Default: none</i><br /><br />
<a name="chart.scale.decimals"></a>
<b>chart.scale.decimals</b><br />
The number of decimal places to display for the values.<br />
<i>Default: 0</i><br /><br />
<a name="interactive features"></a>
<h3 style="border: 1px solid #aaa; background-color: #eee; font-style: italic; padding: 5px; -moz-border-radius: 10px; -webkit-border-radius: 10px; border-radius: 10px">Interactive features</h3> <a name="chart.contextmenu"></a>
<b>chart.contextmenu</b><br />
An array of context menu items. More information on context menus is <a href="context.html">here</a>.<br /><i>Default: [] (An empty array)</i><br /><br />
<a name="chart.resizable"></a>
<b>chart.resizable</b><br />
Defaulting to false, this determines whether your chart will be resizable. Because of the numerous event handlers this has to install code on, This feature is unlikely to work with other dynamic features (the context menu is fine however).<br />
<i>Default: false</i><br /><br />
<a name="chart.resize.handle.background"></a>
<b>chart.resize.handle.background</b><br />
With this you can specify the background color for the resize handle. If you're adjusting the position of the
handle then you may need this to make the handle stand out more.<br />
<i>Default: null</i><br /><br />
<a name="chart.annotatable"></a>
<b>chart.annotatable</b><br />
Whether annotations are enabled for the chart (ie you can draw on the chart interactively).<br /><i>Default: false</i><br /><br />
<a name="chart.annotate.color"></a>
<b>chart.annotate.color</b><br />
If you do not allow the use of the palette, then this will be the only color allowed for annotations.<br /><i>Default: black</i><br /><br />
<a name="shadow"></a>
<h3 style="border: 1px solid #aaa; background-color: #eee; font-style: italic; padding: 5px; -moz-border-radius: 10px; -webkit-border-radius: 10px; border-radius: 10px">Shadow</h3> <a name="chart.shadow"></a>
<b>chart.shadow</b><br />
If true a shadow will be applied to the meter.<br /><i>Default: false</i><br /><br />
<a name="chart.shadow.color"></a>
<b>chart.shadow.color</b><br />
The color of the shadow. <br /><i>Default: rgba(0,0,0,0.5)</i><br /><br />
<a name="chart.shadow.offsetx"></a>
<b>chart.shadow.offsetx</b><br />
The X offset in pixels for the shadow.<br /><i>Default: 3</i><br /><br />
<a name="chart.shadow.offsety"></a>
<b>chart.shadow.offsety</b><br />
The Y offset in pixels for the shadow.<br /><i>Default: 3</i><br /><br />
<a name="chart.shadow.blur"></a>
<b>chart.shadow.blur</b><br />
The severity of the shadow blurring effect.<br /><i>Default: 3</i><br /><br />
<a name="zoom"></a>
<h3 style="border: 1px solid #aaa; background-color: #eee; font-style: italic; padding: 5px; -moz-border-radius: 10px; -webkit-border-radius: 10px; border-radius: 10px">Zoom</h3> <a name="chart.zoom.mode"></a>
<b>chart.zoom.mode</b><br />
Can be used to control whether the zoom is in thumbnail or canvas mode. Possible values are: <i>thumbnail</i> and <i>canvas</i>.<br /><i>Default: canvas</i><br /><br />
<a name="chart.zoom.factor"></a>
<b>chart.zoom.factor</b><br />
This is the factor that the chart will be zoomed by (bigger values means more zoom)<br /><i>Default: 1.5</i><br /><br />
<a name="chart.zoom.fade.in"></a>
<b>chart.zoom.fade.in</b><br />
Whether the zoomed canvas fades in or not. This also can be used to control the fade in for the zoom in thumbnail mode.<br /><i>Default: true</i><br /><br />
<a name="chart.zoom.fade.out"></a>
<b>chart.zoom.fade.out</b><br />
Whether the zoomed canvas fades out or not. This also can be used to control the fade in for the zoom in thumbnail mode.<br /><i>Default: true</i><br /><br />
<a name="chart.zoom.hdir"></a>
<b>chart.zoom.hdir</b><br />
The horizontal direction of the zoom. Possible values are: <i>left</i>, <i>center</i>, <i>right</i><br /><i>Default: right</i><br /><br />
<a name="chart.zoom.vdir"></a>
<b>chart.zoom.vdir</b><br />
The vertical direction of the zoom. Possible values are: <i>up</i>, <i>center</i>, <i>down</i><br /><i>Default: down</i><br /><br />
<a name="chart.zoom.delay"></a>
<b>chart.zoom.delay</b><br />
The delay (in milliseconds) between frames.<br /><i>Default: 50</i><br /><br />
<a name="chart.zoom.frames"></a>
<b>chart.zoom.frames</b><br />
The number of frames in the zoom animation.<br /><i>Default: 10</i><br /><br />
<a name="chart.zoom.shadow"></a>
<b>chart.zoom.shadow</b><br />
Whether or not the zoomed canvas has a shadow or not.<br /><i>Default: true</i><br /><br />
<a name="chart.zoom.thumbnail.width"></a>
<b>chart.zoom.thumbnail.width</b><br />
When the zoom is in thumbnail mode, this is the width (in pixels) of the thumbnail.<br /><i>Default: 75</i><br /><br />
<a name="chart.zoom.thumbnail.height"></a>
<b>chart.zoom.thumbnail.height</b><br />
When the zoom is in thumbnail mode, this is the height (in pixels) of the thumbnail.<br /><i>Default: 75</i><br /><br />
<a name="chart.zoom.background"></a>
<b>chart.zoom.background</b><br />
Defaulting to true, this determines whether the zoom has a dark, semi-opaque background that covers the entire web page.<br /><i>Default: true</i><br /><br />
<a name="miscellaneous"></a>
<h3 style="border: 1px solid #aaa; background-color: #eee; font-style: italic; padding: 5px; -moz-border-radius: 10px; -webkit-border-radius: 10px; border-radius: 10px">Miscellaneous</h3>
<a name="chart.linewidth"></a>
<b>chart.linewidth</b><br />
The width of the outline of the Meter. <br /><i>Default: 2</i><br /><br />
<a name="chart.linewidth.segments"></a>
<b>chart.linewidth.segments</b><br />
The linewidth of the lines separating the segments.<br />
<i>Default: 1</i><br /><br />
<a name="chart.tickmarks.small.num"></a>
<b>chart.tickmarks.small.num</b><br />
This controls the number of small tickmarks.<br />
<i>Default: 100</i><br /><br />
<a name="chart.tickmarks.big.num"></a>
<b>chart.tickmarks.big.num</b><br />
This controls the number of large tickmarks.<br />
<i>Default: 10</i><br /><br />
<a name="chart.tickmarks.small.color"></a>
<b>chart.tickmarks.small.color</b><br />
This sets the color of the small tickmarks.<br />
<i>Default: #bbb</i><br /><br />
<a name="chart.tickmarks.big.color"></a>
<b>chart.tickmarks.big.color</b><br />
This sets the color of the large tickmarks.<br />
<i>Default: black</i><br /><br />
<a name="chart.border"></a>
<b>chart.border</b><br />
Whether the outline is drawn.<br />
<i>Default: true</i><br /><br />
<a name="chart.segment.radius.start"></a>
<b>chart.segment.radius.start</b><br />
Instead of the segments going from the center point outwards, you can use this to specify a start point of the
coloured segments.<br />
<i>Default: null</i><br /><br />
<a name="chart.needle.radius"></a>
<b>chart.needle.radius</b><br />
This can be used to stipulate the radius of the pointer.<br />
<i>Default: null</i><br /><br />
<a name="chart.needle.linewidth"></a>
<b>chart.needle.linewidth</b><br />
This can be used to specify the linewidth used when drawing the needle.<br />
<i>Default: null</i><br /><br />
<a name="chart.needle.tail"></a>
<b>chart.needle.tail</b><br />
If true the needle will have a small tail.<br />
<i>Default: false</i><br /><br />
</div>
<br /><br />
</body>
</html>
|
