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.