Hello Tu Do Ngoc,
In order to generate and get the source used for the series of the RadChartView we've created a PivotChartViewModel that populates its SeriesSource property from the provided DataProvider. Currently this is the only available way to extract this information.
In order to obtain the grouped, filtered and summarized result from the DataProvider, you can create a custom LocalDataSourceProvider and add a new property MyResults that returns the protected property Results (of type IPivotResults) of its base class. You can find the generated groups hierarchically through the MyResults.Root property and you can extract the AggregateValue for a specific row and column group using the MyResults.GetAggregateResult(aggregateIndex, rowGroup, columnGroup) method.
Hope t his helps.
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