Hi

I have two 2D doughnut charts in .NET Winform application (see attached PNG).  I am using Infragistics 15.1 with latest service release.

The "before" picture on the right shows the charts when the application is maximize.  The "after" picture on the left shows the charts when the application window has decreased in size.  The thickness of the doughnut is now very small.

Is there an algorithm that can be used to reduce the doughnut hole proportionally to maintain the doughnut thickness?  It does not have to be exact so long as the doughnut can still be easily viewed.

Any help greatly appreciated.

Regards

James O'Doherty

Solutions and Database Architect

WINSQL Ltd