So far the documentation I’ve read states the following:
3D charts have limited null handling, with no interpolation feature or empty style.
During the ChartDrawItem event I’m trying to find a way to hide flat columns that are null and change the color for flat columns that have a value of zero. Currently I haven’t been able to figure out how to differentiate between data columns that are null vs those that are zero. Any ideas?
I just had a discussion close to this here:
http://forums.infragistics.com/forums/t/10261.aspx
Let me know if you need any more help, and good luck. -Paul
I realized I jumped the gun in my last post and didn't quite answer the whole question you had. So here's my second attempt:
I would suggest just sanitizing your input before hand, removing all of the null values, or if they have some secret meaning, just setting them to some defined constant that you can scan for later. Good luck, and let me know how this goes. -Paul