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21 <title>RGraph: HTML5 canvas graph library - Traditional radar chart documentation</title>
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31 function HideTwitterDIV ()
33 document.getElementById("twitter_div").style.opacity = 0;
34 document.getElementById("twitter_div").style.display = 'none';
38 function ShowTwitterDIV (e)
40 var e = RGraph.FixEventObject(document.all ? event : e);
41 var div = document.getElementById("twitter_div");
42 var img = document.getElementById("twitter_icon");
44 div.style.display = 'block';
45 div.style.left = (RGraph.getCanvasXY(img)[0] + img.offsetWidth - div.offsetWidth + 110) + 'px';
46 div.style.top = (RGraph.getCanvasXY(img)[1] - 1) + 'px';
51 setTimeout('document.getElementById("twitter_div").style.opacity = 0.2;', 25);
52 setTimeout('document.getElementById("twitter_div").style.opacity = 0.4;', 50);
53 setTimeout('document.getElementById("twitter_div").style.opacity = 0.6;', 100);
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63 * This code installs the event handler that hides the Twitter DIV
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81 if (navigator.userAgent.indexOf('Opera') == -1) {
82 document.getElementById("social_icons").style.position = 'fixed';
83 document.getElementById("twitter_div").style.position = 'fixed';
88 <b style="display: inline-block; position: relative; top: 1px">Bookmark and share:</b>
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123 <div id="breadcrumb">
124 <a href="../index.html">RGraph: HTML5 canvas graph library</a>
126 <a href="index.html">Documentation</a>
128 Traditional radar chart
131 <h1>RGraph: HTML5 canvas graph library - Traditional radar chart documentation</h1>
134 if (RGraph.isIE8()) {
135 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>');
140 A traditional radar chart.
144 The example file is <a href="../examples/tradar.html">here</a>.
149 window.onload = function ()
151 var data = [3, 3, 41, 37, 16];
153 var tradar = new RGraph.Tradar('myTradar', data);
154 tradar.Set('chart.background.circles', true);
155 tradar.Set('chart.color', 'rgba(255,0,0,0.5)');
156 tradar.Set('chart.circle', 20);
157 tradar.Set('chart.circle.fill', 'rgba(200,255,200,0.5)');
158 tradar.Set('chart.labels', ['Safari (3%)', 'Other (3%)', 'MSIE 7 (41%)', 'MSIE 6 (37%)', 'Firefox (16%)']);
159 tradar.Set('chart.key', ['Market share', 'A made up figure']);
169 You can use these properties to control how the chart apears. You can set these properties by using the Set() method. Eg:
173 <b>myTradar.Set('color', 'rgba(255,0,0,0.5)');</b>
177 <li><a href="#margins">Margins</a></li>
178 <li><a href="#colors">Colors</a></li>
179 <li><a href="#title">Title</a></li>
180 <li><a href="#labels and text">Labels and text</a></li>
181 <li><a href="#scale">Scale</a></li>
182 <li><a href="#miscellaneous">Miscellaneous</a></li>
183 <li><a href="#key">Key</a></li>
184 <li><a href="#interactive features">Interactive features</a></li>
185 <li><a href="#zoom">Zoom</a></li>
189 <a name="margins"></a>
190 <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>
191 <b>chart.gutter</b><br />
192 The gutter that the chart uses. This is effectively the margin.<br /><i>Default: 25</i><br /><br />
193 <a name="colors"></a>
194 <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.color"></a>
195 <b>chart.color</b><br />
196 The color of the radar chart.<br /><i>Default: rgba(255,0,0,0.5)</i><br /><br />
198 <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">Title</h3> <a name="chart.title"></a>
199 <b>chart.title</b><br />
200 The title, if any, of the chart.<br /><i>Default: Not set</i><br /><br />
201 <a name="chart.title.color"></a>
202 <b>chart.title.color</b><br />
203 The color of the title.<br /> <i>Default: black</i><br /><br />
204 <a name="chart.title.vpos"></a>
205 <b>chart.title.vpos</b><br />
206 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 />
207 <a name="chart.title.hpos"></a>
208 <b>chart.title.hpos</b><br />
209 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 />
210 <a name="labels and text"></a>
211 <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>
212 <b>chart.labels</b><br />
213 The labels to use for the chart.<br /><i>Default: An empty array</i><br /><br />
214 <a name="chart.labels.axes"></a>
215 <b>chart.labels.axes</b><br />
216 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 />
217 <a name="chart.labels.offsetx"></a>
218 <b>chart.labels.offsetx</b><br />
219 The X pixel offset for the labels.<br /><i>Default: 10</i><br /><br />
220 <a name="chart.labels.offsety"></a>
221 <b>chart.labels.offsety</b><br />
222 The Y pixel offset for the labels.<br /><i>Default: 10</i><br /><br />
223 <a name="chart.text.font"></a>
224 <b>chart.text.font</b><br />
225 The font used to render the text.<br /><i>Default: Verdana</i><br /><br />
226 <a name="chart.text.color"></a>
227 <b>chart.text.color</b><br />
228 The color of the labels. <br /><i>Default: black</i><br /><br />
229 <a name="chart.text.size"></a>
230 <b>chart.text.size</b><br />
231 The size of the text (in points).<br /><i>Default: 10</i><br /><br />
234 <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.ymax"></a>
235 <b>chart.ymax</b><br />
236 The optional maximum Y scale value. If not specified then it will be calculated.<br /><i>Default: null (It's calculated)</i><br /><br />
238 <a name="chart.scale.round"></a>
239 <b>chart.scale.round</b><br />
240 Whether to round the maximum scale value up or not. This will produce slightly better scales in some instances.<br />
241 <i>Default: null</i><br /><br />
243 <a name="miscellaneous"></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">Miscellaneous</h3> <a name="chart.background.circles"></a>
245 <b>chart.background.circles</b><br />
246 Whether to draw the grey background circles.<br /><i>Default: true</i><br /><br />
247 <a name="chart.linewidth"></a>
248 <b>chart.linewidth</b><br />
249 The width of the outline.<br /><i>Default: 1</i><br /><br />
250 <a name="chart.circle"></a>
251 <b>chart.circle</b><br />
252 What value to draw a circle at. Defaults to zero (off). You could use this to represent a threshold of some sort.<br /><i>Default: 0</i><br /><br />
253 <a name="chart.circle.fill"></a>
254 <b>chart.circle.fill</b><br />
255 What color to fill the circle with.<br /><i>Default: red</i><br /><br />
256 <a name="chart.circle.stroke"></a>
257 <b>chart.circle.stroke</b><br />
258 What color to stroke (ie The outline) the circle with.<br /><i>Default: black</i><br /><br />
266 <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>
268 <a name="chart.key"></a>
269 <b>chart.key</b><br />
270 An array of key information. <br />
271 <i>Default: [] (An empty array)</i><br /><br />
273 <a name="chart.key.background"></a>
274 <b>chart.key.background</b><br />
275 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>
276 <i>Default: white</i><br /><br />
278 <a name="chart.key.position"></a>
279 <b>chart.key.position</b><br />
280 Determines the position of the key.Either <b>graph</b> (default), or <b>gutter</b>.<br />
281 <i>Default: graph</i><br /><br />
283 <b>chart.key.position.x</b><br />
284 This allows you to specify a specific X coordinate for the key.<br />
285 <i>Default: null</i><br /><br />
287 <b>chart.key.position.y</b><br />
288 This allows you to specify a specific Y coordinate for the key.<br />
289 <i>Default: null</i><br /><br />
291 <b>chart.key.position.gutter.boxed</b><br />
292 If you have the key in gutter mode (ie horizontal), this allows you to give a background color.<br />
293 <i>Default: true</i><br /><br />
295 <a name="chart.key.shadow"></a>
296 <b>chart.key.shadow</b><br />
297 Whether a small drop shadow is applied to the key.<br />
298 <i>Default: false</i><br /><br />
300 <a name="chart.key.shadow.color"></a>
301 <b>chart.key.shadow.color</b><br />
302 The color of the shadow.<br />
303 <i>Default: #666</i><br /><br />
305 <a name="chart.key.shadow.blur"></a>
306 <b>chart.key.shadow.blur</b><br />
307 The extent of the blurring effect used on the shadow.<br />
308 <i>Default: 3</i><br /><br />
310 <a name="chart.key.shadow.offsetx"></a>
311 <b>chart.key.shadow.offsetx</b><br />
312 The X offset of the shadow.<br />
313 <i>Default: 2</i><br /><br />
315 <a name="chart.key.shadow.offsety"></a>
316 <b>chart.key.shadow.offsety</b><br />
317 The Y offset of the shadow.<br />
318 <i>Default: 2</i><br /><br />
320 <b>chart.key.rounded</b><br />
321 This controls whether the corners of the key (in graph mode) are curved. If the key is gutter mode, this has no effect.<br />
322 <i>Default: false</i><br /><br />
324 <b>chart.key.color.shape</b><br />
325 This can be <i>square</i>, <i>circle</i> or <i>line</i> and controls how the color indicators in the key appear.<br />
326 <i>Default: square</i><br /><br />
334 <a name="interactive features"></a>
335 <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>
336 <b>chart.contextmenu</b><br />
337 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 />
338 <a name="chart.annotatable"></a>
339 <b>chart.annotatable</b><br />
340 Whether annotations are enabled for the chart (ie you can draw on the chart interactively.<br /><i>Default: false</i><br /><br />
341 <a name="chart.annotate.color"></a>
342 <b>chart.annotate.color</b><br />
343 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 />
344 <a name="chart.tooltips"></a>
345 <b>chart.tooltips</b><br />
346 A numerically indexed array of tooltips that are shown when a hotspot is hovered over. These can contain HTML.<br /><i>Default: An empty array</i><br /><br />
347 <a name="chart.tooltips.effect"></a>
348 <b>chart.tooltips.effect</b><br />
349 The visual effect used when showing tooltips. Can be either <i>fade</i> or <i>expand</i>.<br /><i>Default: fade</i><br /><br />
350 <a name="chart.tooltips.css.class"></a>
351 <b>chart.tooltips.css.class</b><br />
352 This is the name of the CSS class the graph uses.<br /><i>Default: RGraph_tooltip</i><br /><br />
353 <a name="chart.tooltips.override"></a>
354 <b>chart.tooltips.override</b><br />
355 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 />
356 <a name="chart.resizable"></a>
357 <b>chart.resizable</b><br />
358 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 />
360 <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>
361 <b>chart.zoom.mode</b><br />
362 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 />
363 <a name="chart.zoom.factor"></a>
364 <b>chart.zoom.factor</b><br />
365 This is the factor that the graph will be zoomed by (bigger values means more zoom)<br /><i>Default: 1.5</i><br /><br />
366 <a name="chart.zoom.fade.in"></a>
367 <b>chart.zoom.fade.in</b><br />
368 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 />
369 <a name="chart.zoom.fade.out"></a>
370 <b>chart.zoom.fade.out</b><br />
371 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 />
372 <a name="chart.zoom.hdir"></a>
373 <b>chart.zoom.hdir</b><br />
374 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 />
375 <a name="chart.zoom.vdir"></a>
376 <b>chart.zoom.vdir</b><br />
377 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 />
378 <a name="chart.zoom.delay"></a>
379 <b>chart.zoom.delay</b><br />
380 The delay (in milliseconds) between frames.<br /><i>Default: 50</i><br /><br />
381 <a name="chart.zoom.frames"></a>
382 <b>chart.zoom.frames</b><br />
383 The number of frames in the zoom animation.<br /><i>Default: 10</i><br /><br />
384 <a name="chart.zoom.shadow"></a>
385 <b>chart.zoom.shadow</b><br />
386 Whether or not the zoomed canvas has a shadow or not.<br /><i>Default: true</i><br /><br />
387 <a name="chart.zoom.thumbnail.width"></a>
388 <b>chart.zoom.thumbnail.width</b><br />
389 When the zoom is in thumbnail mode, this is the width (in pixels) of the thumbnail.<br /><i>Default: 75</i><br /><br />
390 <a name="chart.zoom.thumbnail.height"></a>
391 <b>chart.zoom.thumbnail.height</b><br />
392 When the zoom is in thumbnail mode, this is the height (in pixels) of the thumbnail.<br /><i>Default: 75</i><br /><br />
393 <a name="chart.zoom.background"></a>
394 <b>chart.zoom.background</b><br />
395 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 />
396 </div><!-- /DOCS --><br /><br />