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POCreating PIE chart using javascript
 

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  1. POCreating PIE chart using javascript
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    <p>I am trying to create pie chart. Data will come from db but here I have taken static.</p> <p>Here is my fiddle: <a href="http://jsfiddle.net/MJqyC/" rel="nofollow">http://jsfiddle.net/MJqyC/</a></p> <p>Graph could be seen on my system on load. Here I have tried to show on button click but it does not show. where is mistake?</p> <p>js function is:</p> <pre><code>var paper; var arc; var colorArr = ["#468966","#FFF0A5"]; var pieData = [50,50]; var sectorAngleArr = []; var total = 0; var startAngle = 0; var endAngle = 0; var x1,x2,y1,y2 = 0; function init(){ paper = Raphael("holder"); //CALCULATE THE TOTAL for(var k=0; k &lt; pieData.length; k++){ total += pieData[k]; // alert(total); } //CALCULATE THE ANGLES THAT EACH SECTOR SWIPES AND STORE IN AN ARRAY for(var i=0; i &lt; pieData.length; i++){ var angle = Math.ceil(360 * pieData[i]/total); // alert(angle); sectorAngleArr.push(angle); } drawArcs(); } function drawArcs(){ for(var i=0; i &lt;sectorAngleArr.length; i++){ startAngle = endAngle; endAngle = startAngle + sectorAngleArr[i]; x1 = parseInt(200 + 180*Math.cos(Math.PI*startAngle/180)); y1 = parseInt(200 + 180*Math.sin(Math.PI*startAngle/180)); x2 = parseInt(200 + 180*Math.cos(Math.PI*endAngle/180)); y2 = parseInt(200 + 180*Math.sin(Math.PI*endAngle/180)); var d = "M200,200 L" + x1 + "," + y1 + " A180,180 0 0,1 " + x2 + "," + y2 + " z"; //1 means clockwise alert(d); arc = paper.path(d); arc.attr("fill",colorArr[i]); } } </code></pre> <p>UPDATE:</p> <p>Full code:</p> <pre><code>&lt;!DOCTYPE html&gt; &lt;html xmlns="http://www.w3.org/1999/xhtml"&gt; &lt;head&gt; &lt;title&gt;Simple SVG Pie Chart&lt;/title&gt; &lt;script type="text/javascript" src="raphael-min.js"&gt;&lt;/script&gt; &lt;script type="text/javascript"&gt; var paper; var arc; var colorArr = ["#468966","#FFF0A5"]; var pieData = [50,50]; var sectorAngleArr = []; var total = 0; var startAngle = 0; var endAngle = 0; var x1,x2,y1,y2 = 0; function init(){ paper = Raphael("holder"); //CALCULATE THE TOTAL for(var k=0; k &lt; pieData.length; k++){ total += pieData[k]; // alert(total); } //CALCULATE THE ANGLES THAT EACH SECTOR SWIPES AND STORE IN AN ARRAY for(var i=0; i &lt; pieData.length; i++){ var angle = Math.ceil(360 * pieData[i]/total); // alert(angle); sectorAngleArr.push(angle); } drawArcs(); } function drawArcs(){ for(var i=0; i &lt;sectorAngleArr.length; i++){ startAngle = endAngle; endAngle = startAngle + sectorAngleArr[i]; x1 = parseInt(200 + 180*Math.cos(Math.PI*startAngle/180)); y1 = parseInt(200 + 180*Math.sin(Math.PI*startAngle/180)); x2 = parseInt(200 + 180*Math.cos(Math.PI*endAngle/180)); y2 = parseInt(200 + 180*Math.sin(Math.PI*endAngle/180)); var d = "M200,200 L" + x1 + "," + y1 + " A180,180 0 0,1 " + x2 + "," + y2 + " z"; //1 means clockwise //s alert(d); arc = paper.path(d); arc.attr("fill",colorArr[i]); } } &lt;/script&gt; &lt;/head&gt; &lt;body&gt; &lt;div id="holder" style="width:600px; height:400px;"&gt; &lt;input type="submit" onclick="init();" value="Graph"&gt; &lt;/input&gt; &lt;/div&gt; &lt;/body&gt; &lt;/html&gt; </code></pre> <p>Add js: </p> <p><a href="https://github.com/DmitryBaranovskiy/raphael/blob/master/raphael-min.js" rel="nofollow">https://github.com/DmitryBaranovskiy/raphael/blob/master/raphael-min.js</a></p>
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