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Converting our previous chart into a Pie Chart

In our previous example (Creating your first chart), we had created a 3D column chart to graphically represent the weekly sales for one month. Here, we'll quickly convert this chart into a 3D Pie chart without changing the original data.

Once completed, the chart would look like the image shown below. However, the actual chart supports animation and lots more interactivity (like slicing of pie when clicked, rotation of chart using mouse, tool-tips on labels etc.)

To change the chart type, all you have to do is change the name and path of the SWF file to the new chart SWF. Let's see how the change is incorporated in the HTML code (in your web page).

Code examples discussed in this section are present in Download Package > Code > MyFirstChart folder. The chart SWF files are present in Download Package > Charts folder.

For this example, create a copy of weekly-sales.html and save it as weekly-sales-pie.html in the same folder. And, finally edit the HTML code to reflect the following changes:

<html>
  <head> 	
    <title>My First chart using FusionCharts - change chart type</title> 	
    <script type="text/javascript" src="FusionCharts/FusionCharts.js"></script>
  </head>   
  <body>     
    <div id="chartContainer">FusionCharts will load here!</div>          
    <script type="text/javascript"><!-- 

      var myChart = new FusionCharts( "FusionCharts/Pie3D.swf", 
		     "myChartId", "400", "300", "0", "1" );
      myChart.setXMLUrl("Data.xml");
      myChart.render("chartContainer");
      
    // -->
    </script> 	   
  </body> 
</html>

See it live!
In the above code, we've changed the path of the SWF file which was earlier pointing to Column3D.swf but now points to Pie3D.swf. If you now open the HTML file in a browser, you'll see a pie chart similar to this:

You can click on a pie slice (in the actual chart - not in the image above) to slice it out. Or, you can right click on the chart, choose "Enable Rotation" from the context menu, and then rotate the chart by dragging it with the mouse cursor.

Existing users : You might be wondering what happened to functions like setDataURL() which you have already been using in your application. Yes - although deprecated, it will continue to work without any problem.

Please note that you can change the chart type without having to change the data, only if the new chart type is compatible with the original data. In case of this example, we are converting a single series column chart into a single series pie chart. Since, both charts are single series the original data is valid for both chart types.

If you use multi-series data on a single-series chart or vice-versa, you'll get a "No data to display" message on the chart.