This is in the view .php file: 
  <div id="chartdiv" align="center"> 
	  The chart will appear within this DIV. This text will be replaced by the chart. 
   </div> 
   <script type="text/javascript"> 
	 var myChart = new FusionCharts("http://xxx.xxx.x.xx/Maingate/FusionWidgets/Charts/AngularGauge.swf", "myChartId", "200", "100", "0", "0");  
	 myChart.setDataURL("http://xxx.xxx.x.xx/Maingate/Data.xml"); 
	 myChart.render("chartdiv"); 
    </script> 
And it is used whenever I want an angular gauge.