Hello rettweber,
Unfortunately, we do not have such an example, but I think your requirement can be achieved. You can get the initial aggregates in the gird’s ready callback with the getcolumnaggregateddata method and initialize your chart. On the grid’s filter event, get the aggregates again with getcolumnaggregateddata and update your chart accordingly. You can see some chart update examples, such as Live Updates in the jqxChart demo section.
Best Regards,
Dimitar
jQWidgets team
http://www.jqwidgets.com/