Hi Matt,
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Please take a look of this tread http://en.community.dell.com/techcenter/sharepoint-for-all/f/4782/t/19554343#35481 to see a sample of a qChartView using a Stacked Multicolumn chart type.
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To filter the values to be displayed in the qChartView you need to use the CAML Filter feature of qChartView, you can use a Fixed value, a session or an httpParameter.
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Please check our for more details.
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