Gap between series in category (columnseries)

Oct 16, 2013 at 7:42 AM
Edited Oct 17, 2013 at 1:40 PM
By using:
((CategoryAxis)model.Axes[0]).GapWidth = 0.5;
one can set the gapwidth between categories.

But how I'd like to know how one sets a gapwith between series in the same category?