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20 <title>RGraph: HTML5 canvas graph library - Radial scatter chart documentation</title>
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127 <a href="../index.html">RGraph: HTML5 canvas graph library</a>
129 <a href="index.html">Documentation</a>
134 <h1>RGraph: HTML5 canvas graph library - Radial scatter chart documentation</h1>
137 if (RGraph.isIE8()) {
138 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>');
143 The Radial scatter graph is, as the name suggests, a circular variant of the scatter graph.
147 The example file is <a href="../examples/rscatter.html">here</a>.
152 window.onload = function ()
156 [45,63,null, 'The tooltip'],
162 var rscatter= new RGraph.Rscatter('myCanvas', data);
163 rscatter.Set('chart.labels', ['NE','E','SE','S','SW','W','NW','N']);
164 rscatter.Set('chart.gutter', 35);
173 You can use these properties to control how the chart appears. You can set them by using the Set() method. Eg:
177 <b>myRscatter.Set('name', 'value');</b>
181 <li><a href="#margins">Margins</a></li>
182 <li><a href="#labels and text">Labels and text</a></li>
183 <li><a href="#titles">Titles</a></li>
184 <li><a href="#key">Key</a></li>
185 <li><a href="#scale">Scale</a></li>
186 <li><a href="#interactive features">Interactive features</a></li>
187 <li><a href="#zoom">Zoom</a></li>
191 <a name="margins"></a>
192 <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>
193 <b>chart.gutter</b><br />
194 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 />
195 <a name="labels and text"></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">Labels and text</h3> <a name="chart.text.color"></a>
197 <b>chart.text.color</b><br />
198 The color of the labels. <br /><i>Default: black</i><br /><br />
199 <a name="chart.text.size"></a>
200 <b>chart.text.size</b><br />
201 The size (in points) of the labels. <br /><i>Default: 10</i><br /><br />
202 <a name="chart.text.font"></a>
203 <b>chart.text.font</b><br />
204 The font used to render the text.<br /><i>Default: Verdana</i><br /><br />
205 <a name="chart.labels"></a>
206 <b>chart.labels</b><br />
207 The labels, if any, for the graph.<br /><i>Default: none</i><br /><br />
208 <a name="chart.labels.axes"></a>
209 <b>chart.labels.axes</b><br />
210 This controls the axes that show the scale labels. Each letter stands for the appropriate axis (North, South, East and West)<br /><i>Default: nsew</i><br /><br />
211 <a name="chart.labels.position"></a>
212 <b>chart.labels.position</b><br />
213 This can be either <i>center</i> or <i>edge</i> and determines the position of the labels.<br /><i>Default: center</i><br /><br />
214 <a name="titles"></a>
215 <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>
216 <b>chart.title</b><br />
217 The title of the graph, if any. <br /><i>Default: null</i><br /><br />
219 <a name="chart.title.background"></a>
220 <b>chart.title.background</b><br />
221 The background color (if any) for the title.<br />
222 <i>Default: null</i><br /><br />
224 <a name="chart.title.color"></a>
225 <b>chart.title.color</b><br />
226 The color of the title.<br /> <i>Default: black</i><br /><br />
227 <a name="chart.title.hpos"></a>
228 <b>chart.title.hpos</b><br />
229 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 />
230 <a name="chart.title.vpos"></a>
231 <b>chart.title.vpos</b><br />
232 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 />
239 <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>
241 <a name="chart.key"></a>
242 <b>chart.key</b><br />
243 An array of key information. <br />
244 <i>Default: [] (An empty array)</i><br /><br />
246 <a name="chart.key.background"></a>
247 <b>chart.key.background</b><br />
248 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>
249 <i>Default: white</i><br /><br />
251 <a name="chart.key.position"></a>
252 <b>chart.key.position</b><br />
253 Determines the position of the key.Either <b>graph</b> (default), or <b>gutter</b>.<br />
254 <i>Default: graph</i><br /><br />
256 <b>chart.key.position.x</b><br />
257 This allows you to specify a specific X coordinate for the key.<br />
258 <i>Default: null</i><br /><br />
260 <b>chart.key.position.y</b><br />
261 This allows you to specify a specific Y coordinate for the key.<br />
262 <i>Default: null</i><br /><br />
264 <b>chart.key.position.gutter.boxed</b><br />
265 If you have the key in gutter mode (ie horizontal), this allows you to give a background color.<br />
266 <i>Default: true</i><br /><br />
268 <a name="chart.key.shadow"></a>
269 <b>chart.key.shadow</b><br />
270 Whether a small drop shadow is applied to the key.<br />
271 <i>Default: false</i><br /><br />
273 <a name="chart.key.shadow.color"></a>
274 <b>chart.key.shadow.color</b><br />
275 The color of the shadow.<br />
276 <i>Default: #666</i><br /><br />
278 <a name="chart.key.shadow.blur"></a>
279 <b>chart.key.shadow.blur</b><br />
280 The extent of the blurring effect used on the shadow.<br />
281 <i>Default: 3</i><br /><br />
283 <a name="chart.key.shadow.offsetx"></a>
284 <b>chart.key.shadow.offsetx</b><br />
285 The X offset of the shadow.<br />
286 <i>Default: 2</i><br /><br />
288 <a name="chart.key.shadow.offsety"></a>
289 <b>chart.key.shadow.offsety</b><br />
290 The Y offset of the shadow.<br />
291 <i>Default: 2</i><br /><br />
293 <b>chart.key.rounded</b><br />
294 This controls whether the corners of the key (in graph mode) are curved. If the key is gutter mode, this has no effect.<br />
295 <i>Default: false</i><br /><br />
297 <b>chart.key.color.shape</b><br />
298 This can be <i>square</i>, <i>circle</i> or <i>line</i> and controls how the color indicators in the key appear.<br />
299 <i>Default: square</i><br /><br />
303 <a name="interactive features"></a>
304 <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>
305 <b>chart.contextmenu</b><br />
306 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 />
307 <a name="chart.tooltips.effect"></a>
308 <b>chart.tooltips.effect</b><br />
309 The animated effect used for showing tooltips. Can be either <i>fade</i> or <i>expand</i>.<br /><i>Default: fade</i><br /><br />
310 <a name="chart.tooltips.event"></a>
311 <b>chart.tooltips.event</b><br />
312 This is the event that triggers the tooltips. It can be either <i>onclick</i> or <i>onmousemove</i>.<br /><i>Default: onclick</i><br /><br />
313 <a name="chart.tooltips.css.class"></a>
314 <b>chart.tooltips.css.class</b><br />
315 This is the name of the CSS class the graph uses.<br /><i>Default: RGraph_tooltip</i><br /><br />
316 <a name="chart.tooltips.override"></a>
317 <b>chart.tooltips.override</b><br />
318 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 />
319 <a name="chart.annotatable"></a>
320 <b>chart.annotatable</b><br />
321 Whether annotations are enabled for the chart (ie you can draw on the chart interactively.<br /><i>Default: false</i><br /><br />
322 <a name="chart.annotate.color"></a>
323 <b>chart.annotate.color</b><br />
324 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 />
325 <a name="chart.resizable"></a>
326 <b>chart.resizable</b><br />
327 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 />
329 <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>
330 <b>chart.zoom.mode</b><br />
331 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 />
332 <a name="chart.zoom.factor"></a>
333 <b>chart.zoom.factor</b><br />
334 This is the factor that the graph will be zoomed by (bigger values means more zoom)<br /><i>Default: 1.5</i><br /><br />
335 <a name="chart.zoom.fade.in"></a>
336 <b>chart.zoom.fade.in</b><br />
337 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 />
338 <a name="chart.zoom.fade.out"></a>
339 <b>chart.zoom.fade.out</b><br />
340 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 />
341 <a name="chart.zoom.hdir"></a>
342 <b>chart.zoom.hdir</b><br />
343 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 />
344 <a name="chart.zoom.vdir"></a>
345 <b>chart.zoom.vdir</b><br />
346 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 />
347 <a name="chart.zoom.delay"></a>
348 <b>chart.zoom.delay</b><br />
349 The delay (in milliseconds) between frames.<br /><i>Default: 50</i><br /><br />
350 <a name="chart.zoom.frames"></a>
351 <b>chart.zoom.frames</b><br />
352 The number of frames in the zoom animation.<br /><i>Default: 10</i><br /><br />
353 <a name="chart.zoom.shadow"></a>
354 <b>chart.zoom.shadow</b><br />
355 Whether or not the zoomed canvas has a shadow or not.<br /><i>Default: true</i><br /><br />
356 <a name="chart.zoom.thumbnail.width"></a>
357 <b>chart.zoom.thumbnail.width</b><br />
358 When the zoom is in thumbnail mode, this is the width (in pixels) of the thumbnail.<br /><i>Default: 75</i><br /><br />
359 <a name="chart.zoom.thumbnail.height"></a>
360 <b>chart.zoom.thumbnail.height</b><br />
361 When the zoom is in thumbnail mode, this is the height (in pixels) of the thumbnail.<br /><i>Default: 75</i><br /><br />
362 <a name="chart.zoom.background"></a>
363 <b>chart.zoom.background</b><br />
364 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 />
365 </div><!-- /DOCS --><br /><br />