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21 <title>RGraph: HTML5 canvas graph library - Bi-polar 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 - Bi-polar 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 Bi-polar chart is good for comparing two things side by side. For example sales trends for two separate years, that you
149 The example file is <a href="../examples/bipolar.html">here</a>.
154 window.onload = function ()
156 var left = [5,6,8,9,12,13,4,9];
157 var right = [5,8,4,11,15,26,13,16];
159 var bipolar = new RGraph.Bipolar('myBipolar', left, right);
160 bipolar.Set('chart.colors', ['#fff', '#eef', '#ddf', '#ccf', '#bbf', '#bbf', '#aaf', '#99f']);
161 bipolar.Set('chart.margin', 3);
162 bipolar.Set('chart.labels', ['Barry', 'John', 'Fred', 'George', 'Rich', 'Larry', 'John', 'Mike']);
163 bipolar.Set('chart.title.left', '2007');
164 bipolar.Set('chart.title.right', '2008');
165 bipolar.Set('chart.gutter', 35);
175 You can use these properties to control how the chart apears. You can set them by using the Set() method. Eg:
179 <b>myBipolar.Set('name', 'value');</b>
183 <li><a href="#margins">Margins</a></li>
184 <li><a href="#titles">Titles</a></li>
185 <li><a href="#colors">Colors</a></li>
186 <li><a href="#labels, text and axes">Labels, text and axes</a></li>
187 <li><a href="#scale">Scale</a></li>
188 <li><a href="#interactive features">Interactive features</a></li>
189 <li><a href="#shadow">Shadow</a></li>
190 <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 space given over to the labels. <br /><i>Default: 25</i><br /><br />
199 <a name="chart.margin"></a>
200 <b>chart.margin</b><br />
201 The space above and below each bar. <br /><i>Default: 2</i><br /><br />
202 <a name="titles"></a>
203 <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>
205 <b>chart.title</b><br />
206 The main title of the chart.<br />
207 <i>Default: (An empty string)</i><br /><br />
209 <a name="chart.title.background"></a>
210 <b>chart.title.background</b><br />
211 The background color (if any) for the title.<br />
212 <i>Default: null</i><br /><br />
214 <a name="chart.title.hpos"></a>
215 <b>chart.title.hpos</b><br />
216 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 />
217 <a name="chart.title.vpos"></a>
218 <b>chart.title.vpos</b><br />
219 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 />
220 <a name="chart.title.color"></a>
221 <b>chart.title.color</b><br />
222 The color of the title.<br /> <i>Default: black</i><br /><br />
223 <a name="chart.title"></a>
224 <a name="chart.title.left"></a>
225 <b>chart.title.left</b><br />
226 The left title. <br /><i>Default: An empty string</i><br /><br />
227 <a name="chart.title.right"></a>
228 <b>chart.title.right</b><br />
229 The right title. <br /><i>Default: An empty string</i><br /><br />
230 <a name="colors"></a>
232 <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>
234 <a name="chart.colors"></a>
235 <b>chart.colors</b><br />
236 An array of colors. These too can be gradients that you make if you wish. <br />
237 <i>Default: ['#fcf', '#00f', '#f00', '#0f0', '#ff0', '#0ff', '#f0f', '#ff6101', '#b401ff', '#e4ff01', '#fb8195', '#ccc']</i><br /><br />
239 <a name="chart.strokestyle"></a>
240 <b>chart.strokestyle</b><br />
241 This is the color used as the stroke style. If you didn't want it, you could set this to <i>rgba(0,0,0,0)</i><br />
242 <i>Default: #333</i><br /><br />
244 <a name="labels, text and axes"></a>
245 <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, text and axes</h3> <a name="chart.xtickinterval"></a>
246 <b>chart.xtickinterval</b><br />
247 The X tick mark interval. <br /><i>Default: null</i><br /><br />
248 <a name="chart.axis.color"></a>
249 <b>chart.axis.color</b><br />
250 The color of the axes. <br /><i>Default: black</i><br /><br />
251 <a name="chart.xmax"></a>
252 <b>chart.xmax</b><br />
253 This allows you to set the maximum X value that the chart uses, instead of it being auto-generated.<br><i>Default: null</i></br><br /><br />
254 <a name="chart.scale.decimals"></a>
255 <b>chart.scale.decimals</b><br />
256 This allows you to set the precision of the X labels.<br /><i>Default: null</i><br /><br />
257 <a name="chart.scale.point"></a>
258 <b>chart.scale.point</b><br />
259 The character used as the decimal point.<br /><i>Default: .</i><br /><br />
260 <a name="chart.scale.thousand"></a>
261 <b>chart.scale.thousand</b><br />
262 The character used as the thousand separator<br /><i>Default: ,</i><br /><br />
263 <a name="chart.labels"></a>
264 <b>chart.labels</b><br />
265 An array of the graphs labels (they go in the middle). <br /><i>Default: null</i><br /><br />
266 <a name="chart.text.size"></a>
267 <b>chart.text.size</b><br />
268 The size of the text used (in points). <br /><i>Default: 10</i><br /><br />
269 <a name="chart.text.font"></a>
270 <b>chart.text.font</b><br />
271 The font used to render the text.<br /><i>Default: Verdana</i><br /><br />
272 <a name="chart.text.color"></a>
273 <b>chart.text.color</b><br />
274 The color of the labels. <br /><i>Default: black</i><br /><br />
276 <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>
279 <a name="chart.scale.round"></a>
280 <b>chart.scale.round</b><br />
281 Whether to round the maximum scale value up or not. This will produce slightly better scales in some instances.<br />
282 <i>Default: null</i><br /><br />
284 <b>chart.units.pre</b><br />
285 The units that are applied to the X axis labels (these are pre-pended to the number).<br /><i>Default: none</i><br /><br />
286 <a name="chart.units.post"></a>
287 <b>chart.units.post</b><br />
288 The units that are applied to the X axis labels (these are appended to the number).<br /><i>Default: none</i><br /><br />
289 <a name="interactive features"></a>
290 <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.tooltips"></a>
291 <b>chart.tooltips</b><br />
292 A numerically indexed array of tooltips that are shown when a bar is clicked. These can contain HTML.<br /><i>Default: An empty array</i><br /><br />
293 <a name="chart.tooltips.effect"></a>
294 <b>chart.tooltips.effect</b><br />
295 The animated effect used for showing tooltips. Can be either <i>fade</i> or <i>expand</i>.<br /><i>Default: fade</i><br /><br />
296 <a name="chart.tooltips.css.class"></a>
297 <b>chart.tooltips.css.class</b><br />
298 This is the name of the CSS class the graph uses.<br /><i>Default: RGraph_tooltip</i><br /><br />
299 <a name="chart.tooltips.override"></a>
300 <b>chart.tooltips.override</b><br />
301 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 />
302 <a name="chart.contextmenu"></a>
303 <b>chart.contextmenu</b><br />
304 An array of context menu items. Cannot be used in conjunction with tooltips.<br /><i>Default: [] (An empty array)</i><br /><br />
305 <a name="chart.annotatable"></a>
306 <b>chart.annotatable</b><br />
307 Whether annotations are enabled for the chart (ie you can draw on the chart interactively.<br /><i>Default: false</i><br /><br />
308 <a name="chart.annotate.color"></a>
309 <b>chart.annotate.color</b><br />
310 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 />
311 <a name="chart.resizable"></a>
312 <b>chart.resizable</b><br />
313 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 />
314 <a name="shadow"></a>
315 <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>
316 <b>chart.shadow</b><br />
317 Turns the shadow on or off.<br /> <i>Default: false</i><br /><br />
318 <a name="chart.shadow.color"></a>
319 <b>chart.shadow.color</b><br />
320 The color of the shadow.<br /> <i>Default: #666</i><br /><br />
321 <a name="chart.shadow.offsetx"></a>
322 <b>chart.shadow.offsetx</b><br />
323 The horizontal offset of the shadow.<br /> <i>Default: 3</i><br /><br />
324 <a name="chart.shadow.offsety"></a>
325 <b>chart.shadow.offsety</b><br />
326 The vertical offset of the shadow. <br /> <i>Default: 3</i><br /><br />
327 <a name="chart.shadow.blur"></a>
328 <b>chart.shadow.blur</b><br />
329 How severe the blurring effect is for the shadow.<br /> <i>Default: 3</i><br /><br />
331 <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>
332 <b>chart.zoom.mode</b><br />
333 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 />
334 <a name="chart.zoom.factor"></a>
335 <b>chart.zoom.factor</b><br />
336 This is the factor that the graph will be zoomed by (bigger values means more zoom)<br /><i>Default: 1.5</i><br /><br />
337 <a name="chart.zoom.fade.in"></a>
338 <b>chart.zoom.fade.in</b><br />
339 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 />
340 <a name="chart.zoom.fade.out"></a>
341 <b>chart.zoom.fade.out</b><br />
342 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 />
343 <a name="chart.zoom.hdir"></a>
344 <b>chart.zoom.hdir</b><br />
345 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 />
346 <a name="chart.zoom.vdir"></a>
347 <b>chart.zoom.vdir</b><br />
348 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 />
349 <a name="chart.zoom.delay"></a>
350 <b>chart.zoom.delay</b><br />
351 The delay (in milliseconds) between frames.<br /><i>Default: 50</i><br /><br />
352 <a name="chart.zoom.frames"></a>
353 <b>chart.zoom.frames</b><br />
354 The number of frames in the zoom animation.<br /><i>Default: 10</i><br /><br />
355 <a name="chart.zoom.shadow"></a>
356 <b>chart.zoom.shadow</b><br />
357 Whether or not the zoomed canvas has a shadow or not.<br /><i>Default: true</i><br /><br />
358 <a name="chart.zoom.thumbnail.width"></a>
359 <b>chart.zoom.thumbnail.width</b><br />
360 When the zoom is in thumbnail mode, this is the width (in pixels) of the thumbnail.<br /><i>Default: 75</i><br /><br />
361 <a name="chart.zoom.thumbnail.height"></a>
362 <b>chart.zoom.thumbnail.height</b><br />
363 When the zoom is in thumbnail mode, this is the height (in pixels) of the thumbnail.<br /><i>Default: 75</i><br /><br />
364 <a name="chart.zoom.background"></a>
365 <b>chart.zoom.background</b><br />
366 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 />
367 </div><!-- /DOCS --><br /><br />