Grouping Silverlight chart ColumnSeries

As the title states, I want to group some ColumnSeries, I'm using Silverlight Charting Toolkit.

He开发者_开发技巧re is an image to explain what I want:

but in my case, the ColumnSerieses are always stuck together.

The chart you have included seems to be a fairly straightforward affair. Its exactly what ColumnSeries is designed to generate.

A set of 4 ColumnSeries one for each quarter and a DateTimeAxis with and interval type of Years and an interval of 1.

I suspect there is actually more to your question because this just seems too simple otherwise?