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21 <title>RGraph: HTML5 canvas graph library - horizontal bar chart documentation</title>
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128 <a href="../index.html">RGraph: HTML5 canvas graph library</a>
130 <a href="index.html">Documentation</a>
135 <h1>RGraph: HTML5 canvas graph library - Horizontal bar chart documentation</h1>
138 if (RGraph.isIE8()) {
139 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 graphs, 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. Click <a href="http://groups.google.com/group/rgraph/browse_thread/thread/c5651ff8c56b8f3c#" target="_blank">here</a> to see some screenshots.</div>');
144 The horizontal bar graph is a variation on the bar chart which can be useful when you have larger labels, since you have
145 more space available to you for them.
149 The example file is <a href="../examples/hbar.html">here</a>.
154 window.onload = function ()
156 var data = [280,45,133,166,84,259,266,960,219,311];
158 var hbar = new RGraph.HBar('myCanvas', data);
159 hbar.Set('chart.labels', ['Richard', 'Alex', 'Nick', 'Scott', 'Kjnell', 'Doug', 'Charles', 'Michelle', 'Mark', 'Alison']);
160 hbar.Set('chart.gutter', 45);
161 hbar.Set('chart.background.barcolor1', 'rgba(255,255,255,1)');
162 hbar.Set('chart.background.barcolor2', 'rgba(255,255,255,1)');
163 hbar.Set('chart.background.grid', true);
164 hbar.Set('chart.colors', ['rgba(255,0,0,1)']);
173 You can use these properties to control how the bar graph apears. You can set them by using the Set() method. Eg:
177 <b>myHBar.Set('name', 'value');</b>
181 <li><a href="#margins">Margins</a></li>
182 <li><a href="#colors">Colors</a></li>
183 <li><a href="#background">Background</a></li>
184 <li><a href="#labels and text">Labels and text</a></li>
185 <li><a href="#titles">Titles</a></li>
186 <li><a href="#scale and axes">Scale and axes</a></li>
187 <li><a href="#miscellaneous">Miscellaneous</a></li>
188 <li><a href="#shadow">Shadow</a></li>
189 <li><a href="#key">Key</a></li>
190 <li><a href="#interactive features">Interactive features</a></li>
191 <li><a href="#zoom">Zoom</a></li>
195 <a name="margins"></a>
196 <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"></a>
197 <b>chart.gutter</b><br />
198 The gutter of the graph. This is the area outside of the X and Y axis - where the labels go. If you're short on space for your labels, try increasing this. <br /><i>Default: 25</i><br /><br />
199 <a name="colors"></a>
200 <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.colors"></a>
201 <b>chart.colors</b><br />
202 An array of the colors of the actual bars. <br /><i>Default: An array - ['rgb(0,0,255)', '#0f0', '#00f', '#ff0', '#0ff', '#0f0']</i><br /><br />
203 <a name="background"></a>
204 <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">Background</h3> <a name="chart.background.barcolor1"></a>
205 <b>chart.background.barcolor1</b><br />
206 The color of the background bars, (1 of 2). <br /><i>Default: white</i><br /><br />
207 <a name="chart.background.barcolor2"></a>
208 <b>chart.background.barcolor2</b><br />
209 The color of the background bars, (2 of 2). <br /><i>Default: white</i><br /><br />
210 <a name="chart.background.grid"></a>
211 <b>chart.background.grid</b><br />
212 Whether to show the background grid or not. <br /><i>Default: true</i><br /><br />
213 <a name="chart.background.grid.color"></a>
214 <b>chart.background.grid.color</b><br />
215 The color of the background grid. <br /><i>Default: #ddd</i><br /><br />
216 <a name="chart.background.grid.hsize"></a>
217 <b>chart.background.grid.hsize</b><br />
218 The horizontal background grid size. <br /><i>Default: 40</i><br /><br />
219 <a name="chart.background.grid.vsize"></a>
220 <b>chart.background.grid.vsize</b><br />
221 The vertical background grid size. <br /><i>Default: 18</i><br /><br />
222 <a name="chart.background.grid.width"></a>
223 <b>chart.background.grid.width</b><br />
224 The width that the background grid lines are. Decimals (eg 0.5) are permitted.<br /><i>Default: 0.5</i><br /><br />
225 <a name="chart.background.grid.border"></a>
226 <b>chart.background.grid.border</b><br />
227 Determines whether a border line is drawn around the grid.<br /><i>Default: true</i><br /><br />
228 <a name="chart.background.grid.hlines"></a>
229 <b>chart.background.grid.hlines</b><br />
230 Determines whether to draw the horizontal grid lines.<br /><i>Default: true</i><br /><br />
231 <a name="chart.background.grid.vlines"></a>
232 <b>chart.background.grid.vlines</b><br />
233 Determines whether to draw the vertical grid lines.<br /><i>Default: true</i><br /><br />
234 <a name="chart.background.grid.autofit"></a>
235 <b>chart.background.grid.autofit</b><br />
236 Instead of specifying a pixel width/height for the background grid, you can use autofit and specify how many horizontal and vertical lines you want.<br /><i>Default: false</i><br /><br />
237 <a name="chart.background.grid.autofit.numhlines"></a>
238 <b>chart.background.grid.autofit.numhlines</b><br />
239 When using autofit this allows you to specify how many horizontal grid lines you want. <br /><i>Default: 14</i><br /><br />
240 <a name="chart.background.grid.autofit.numvlines"></a>
241 <b>chart.background.grid.autofit.numvlines</b><br />
242 When using autofit this allows you to specify how many vertical grid lines you want. <br /><i>Default: 20</i><br /><br />
243 <a name="labels and text"></a>
244 <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.labels"></a>
245 <b>chart.labels</b><br />
246 An array of the labels to be used on the graph. <br /><i>Default: An empty array</i><br /><br />
248 <a name="chart.labels.above"></a>
249 <b>chart.labels.above</b><br />
250 This is a boolean which if true, will cause labels to be shown to the right of the bars. (It's called "above"
251 for API compatibility).<br />
252 <i>Default: false</i><br /><br />
254 <a name="chart.labels.above.decimals"></a>
255 <b>chart.labels.above.decimals</b><br />
256 This is a number which controls how many decimals are shown. It defaults to 0, and since it was added (4th December 2010)
257 you may need to set this, otherwise no decimals will be shown.<br />
258 <i>Default: 0</i><br /><br />
260 <a name="chart.text.font"></a>
261 <b>chart.text.font</b><br />
262 The font used to render the text.<br /><i>Default: Verdana</i><br /><br />
263 <a name="chart.text.color"></a>
264 <b>chart.text.color</b><br />
265 The color of the labels. <br /><i>Default: black</i><br /><br />
266 <a name="chart.text.size"></a>
267 <b>chart.text.size</b><br />
268 The size (in points) of the labels. <br /><i>Default: 10</i><br /><br />
269 <a name="titles"></a>
270 <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>
271 <b>chart.title</b><br />
272 The title of the graph, if any. <br /><i>Default: null</i><br /><br />
274 <a name="chart.title.background"></a>
275 <b>chart.title.background</b><br />
276 The background color (if any) for the title.<br />
277 <i>Default: null</i><br /><br />
279 <a name="chart.title.hpos"></a>
280 <b>chart.title.hpos</b><br />
281 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 />
282 <a name="chart.title.vpos"></a>
283 <b>chart.title.vpos</b><br />
284 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 />
285 <a name="chart.title.xaxis"></a>
286 <b>chart.title.xaxis</b><br />
287 This allows to specify a title for the X axis.<br /><i>Default: none</i><br /><br />
288 <a name="chart.title.yaxis"></a>
289 <b>chart.title.yaxis</b><br />
290 This allows to specify a title for the Y axis.<br /><i>Default: none</i><br /><br />
291 <a name="chart.title.xaxis.pos"></a>
292 <b>chart.title.xaxis.pos</b><br />
293 This is multiplied with the gutter to give the position of the X axis title.<br /><i>Default: 0.25</i><br /><br />
294 <a name="chart.title.yaxis.pos"></a>
295 <b>chart.title.yaxis.pos</b><br />
296 This is multiplied with the gutter to give the position of the Y axis title.<br /><i>Default: 0.5</i><br /><br />
297 <a name="chart.title.color"></a>
298 <b>chart.title.color</b><br />
299 The color of the title.<br /> <i>Default: black</i><br /><br />
300 <a name="scale and axes"></a>
301 <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 and axes</h3> <a name="chart.scale.point"></a>
302 <b>chart.scale.point</b><br />
303 The character used as the decimal point.<br /><i>Default: .</i><br /><br />
304 <a name="chart.scale.thousand"></a>
305 <b>chart.scale.thousand</b><br />
306 The character used as the thousand separator<br /><i>Default: ,</i><br /><br />
308 <a name="chart.scale.round"></a>
309 <b>chart.scale.round</b><br />
310 Whether to round the maximum scale value up or not. This will produce slightly better scales in some instances.<br />
311 <i>Default: null</i><br /><br />
313 <a name="chart.xmax"></a>
314 <b>chart.xmax</b><br />
315 (Optional) An optional max figure for the X scale.<br /> <i>Default: none (one is calculated)</i><br /><br />
316 <a name="chart.yaxispos"></a>
317 <b>chart.yaxispos</b><br />
318 The position of the Y axis. Works with regular and grouped charts. Can be either <i>center</i> or <i>left</i>.<br /> <i>Default: left</i><br /><br />
319 <a name="chart.axis.color"></a>
320 <b>chart.axis.color</b><br />
321 The color of the axes.<br /> <i>Default: black</i><br /><br />
322 <a name="chart.units.pre"></a>
323 <b>chart.units.pre</b><br />
324 The units that the X axis is 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 />
325 <a name="chart.units.post"></a>
326 <b>chart.units.post</b><br />
327 The units that the X axis is 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 />
328 <a name="chart.units.ingraph"></a>
329 <b>chart.units.ingraph</b><br />
330 If your units are long, setting this stipulates them to be used for ingraph labels only.<br /><i>Default: false</i><br /><br />
331 <a name="miscellaneous"></a>
332 <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.grouping"></a>
333 <b>chart.grouping</b><br />
334 How the bars are grouped, and it should be one of: <b>grouped</b> or <b>stacked</b><br /><i>Default: grouped</i><br /><br />
335 <a name="chart.vmargin"></a>
336 <b>chart.vmargin</b><br />
337 The vertical margin that is applied to each individual bar.<br /><i>Default: 3</i><br /><br />
338 <a name="chart.strokestyle"></a>
339 <b>chart.strokestyle</b><br />
340 The color of the outlines of the bars.<br /><i>Default: black</i><br /><br />
341 <a name="shadow"></a>
342 <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>
343 <b>chart.shadow</b><br />
344 Whether a small drop shadow is applied. <br /><i>Default: false</i><br /><br />
345 <a name="chart.shadow.color"></a>
346 <b>chart.shadow.color</b><br />
347 The color of the shadow. <br /><i>Default: #666</i><br /><br />
348 <a name="chart.shadow.offsetx"></a>
349 <b>chart.shadow.offsetx</b><br />
350 The X offset of the shadow. <br /><i>Default: 3</i><br /><br />
351 <a name="chart.shadow.offsety"></a>
352 <b>chart.shadow.offsety</b><br />
353 The Y offset of the shadow. <br /><i>Default: 3</i><br /><br />
354 <a name="chart.shadow.blur"></a>
355 <b>chart.shadow.blur</b><br />
356 The severity of the shadow blurring effect. <br /><i>Default: 3</i><br /><br />
361 <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">Key</h3>
363 <a name="chart.key"></a>
364 <b>chart.key</b><br />
365 An array of key information. <br />
366 <i>Default: [] (An empty array)</i><br /><br />
368 <a name="chart.key.background"></a>
369 <b>chart.key.background</b><br />
370 The color of the key background. Typically white, you could set this to something like rgba(255,255,255,0.7) to allow people to see things behind it.<br>
371 <i>Default: white</i><br /><br />
373 <a name="chart.key.position"></a>
374 <b>chart.key.position</b><br />
375 Determines the position of the key.Either <b>graph</b> (default), or <b>gutter</b>.<br />
376 <i>Default: graph</i><br /><br />
378 <b>chart.key.position.x</b><br />
379 This allows you to specify a specific X coordinate for the key.<br />
380 <i>Default: null</i><br /><br />
382 <b>chart.key.position.y</b><br />
383 This allows you to specify a specific Y coordinate for the key.<br />
384 <i>Default: null</i><br /><br />
386 <b>chart.key.position.gutter.boxed</b><br />
387 If you have the key in gutter mode (ie horizontal), this allows you to give a background color.<br />
388 <i>Default: true</i><br /><br />
390 <a name="chart.key.shadow"></a>
391 <b>chart.key.shadow</b><br />
392 Whether a small drop shadow is applied to the key.<br />
393 <i>Default: false</i><br /><br />
395 <a name="chart.key.shadow.color"></a>
396 <b>chart.key.shadow.color</b><br />
397 The color of the shadow.<br />
398 <i>Default: #666</i><br /><br />
400 <a name="chart.key.shadow.blur"></a>
401 <b>chart.key.shadow.blur</b><br />
402 The extent of the blurring effect used on the shadow.<br />
403 <i>Default: 3</i><br /><br />
405 <a name="chart.key.shadow.offsetx"></a>
406 <b>chart.key.shadow.offsetx</b><br />
407 The X offset of the shadow.<br />
408 <i>Default: 2</i><br /><br />
410 <a name="chart.key.shadow.offsety"></a>
411 <b>chart.key.shadow.offsety</b><br />
412 The Y offset of the shadow.<br />
413 <i>Default: 2</i><br /><br />
415 <b>chart.key.rounded</b><br />
416 This controls whether the corners of the key (in graph mode) are curved. If the key is gutter mode, this has no effect.<br />
417 <i>Default: false</i><br /><br />
419 <b>chart.key.color.shape</b><br />
420 This can be <i>square</i>, <i>circle</i> or <i>line</i> and controls how the color indicators in the key appear.<br />
421 <i>Default: square</i><br /><br />
424 <a name="interactive features"></a>
425 <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>
426 <b>chart.contextmenu</b><br />
427 An array of context menu items. You cannot have context menus AND tooltips, only one or the other. More information on context menus is <a href="context.html">here</a>.<br /><i>Default: [] (An empty array)</i><br /><br />
428 <a name="chart.tooltips"></a>
429 <b>chart.tooltips</b><br />
430 An array of tooltips for the chart.<br /><i>Default: An empty array</i><br /><br />
431 <a name="chart.tooltips.effect"></a>
432 <b>chart.tooltips.effect</b><br />
433 The visual effect used when showing tooltips. Can be either <i>fade</i> or <i>expand</i>.<br /><i>Default: fade</i><br /><br />
434 <a name="chart.tooltips.css.class"></a>
435 <b>chart.tooltips.css.class</b><br />
436 This is the name of the CSS class the graph uses.<br /><i>Default: RGraph_tooltip</i><br /><br />
437 <a name="chart.tooltips.override"></a>
438 <b>chart.tooltips.override</b><br />
439 If you wish to handle showing tooltips yourself, this should be a function object which does just that. There's more information on the <a href="tooltips.html">tooltips documentation page</a><br /><i>Default: null</i><br /><br />
440 <a name="chart.annotatable"></a>
441 <b>chart.annotatable</b><br />
442 Whether annotations are enabled for the chart (ie you can draw on the chart interactively.<br /><i>Default: false</i><br /><br />
443 <a name="chart.annotate.color"></a>
444 <b>chart.annotate.color</b><br />
445 If you do not allow the use of the palette, then this will be the only colour allowed for annotations.<br /><i>Default: black</i><br /><br />
446 <a name="chart.resizable"></a>
447 <b>chart.resizable</b><br />
448 Defaulting to false, this determines whether your graph 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 />
450 <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>
451 <b>chart.zoom.mode</b><br />
452 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 />
453 <a name="chart.zoom.factor"></a>
454 <b>chart.zoom.factor</b><br />
455 This is the factor that the graph will be zoomed by (bigger values means more zoom)<br /><i>Default: 1.5</i><br /><br />
456 <a name="chart.zoom.fade.in"></a>
457 <b>chart.zoom.fade.in</b><br />
458 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 />
459 <a name="chart.zoom.fade.out"></a>
460 <b>chart.zoom.fade.out</b><br />
461 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 />
462 <a name="chart.zoom.hdir"></a>
463 <b>chart.zoom.hdir</b><br />
464 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 />
465 <a name="chart.zoom.vdir"></a>
466 <b>chart.zoom.vdir</b><br />
467 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 />
468 <a name="chart.zoom.delay"></a>
469 <b>chart.zoom.delay</b><br />
470 The delay (in milliseconds) between frames.<br /><i>Default: 50</i><br /><br />
471 <a name="chart.zoom.frames"></a>
472 <b>chart.zoom.frames</b><br />
473 The number of frames in the zoom animation.<br /><i>Default: 10</i><br /><br />
474 <a name="chart.zoom.shadow"></a>
475 <b>chart.zoom.shadow</b><br />
476 Whether or not the zoomed canvas has a shadow or not.<br /><i>Default: true</i><br /><br />
477 <a name="chart.zoom.thumbnail.width"></a>
478 <b>chart.zoom.thumbnail.width</b><br />
479 When the zoom is in thumbnail mode, this is the width (in pixels) of the thumbnail.<br /><i>Default: 75</i><br /><br />
480 <a name="chart.zoom.thumbnail.height"></a>
481 <b>chart.zoom.thumbnail.height</b><br />
482 When the zoom is in thumbnail mode, this is the height (in pixels) of the thumbnail.<br /><i>Default: 75</i><br /><br />
483 <a name="chart.zoom.background"></a>
484 <b>chart.zoom.background</b><br />
485 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 />
486 </div><!-- /DOCS --><br /><br />