New answers tagged chart
You can also try the Nevron Chart for SharePoint, definitely the most complete charting package for SharePoint. It is not free but you can evaluate it without any limitations (time limited trial). The following online demo shows multi-level drill-down: http://spchartexamples.nevron.com/Interactive%20Dashboards/Interactive%20Drill-Down/default.aspx
Collabion supports Web Part Connections, so you can filter data based on the query string. You'll need to use the Query String filter web part and connect it to Collabion Charts, it's fairly simple. see their docs for more info. Nevron, has something similar too. Hope this helps.
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