score:2
you may see a full code example an app where a chart is updated with new data based on a selection in a release dropdown here. in that code i check if chart exists, and remove it if it does before recreating it:
if (this.down('#mychart')) {
this.remove('mychart');
}
this.add(
{
xtype: 'rallychart',
height: 400,
itemid: 'mychart',
chartconfig: {
//....
},
chartdata: {
categories: schedulestategroups,
series: [
{
//...
}
]
}
}
);
this.down('#mychart')._unmask(); //otherwise loading mask does not go away
Source: stackoverflow.com
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