I have been struggling to find out how to format the columns (or bars) in a XamDataChart ColumnSeries based it's value. I understand that I could do this by multiple series's but this does not work correctly in my case. I am looking for something similar to this example (http://forums.infragistics.com/silverlight/codesamples/custom-chart-data-point-templates.aspx) but using the style of the column, not a marker.
The data chart currently does not allow for changing the template of the columns in a column series. You could make a feature request to this effect.
In what way is the automatic coloring of the series not working to your expectations?
You can use an implicit style to modify the style of the rectangles used by a series, but you would have to do some tricky things there, depending on what your goal is. Could you elaborate on what you are trying to achieve?
-Graham