3D scatterplots in .net

I was wondering if there were any free libraries for .net开发者_Python百科 for producing a 3D scatterplot, I haven't been able to find any using google.

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You might get some mileage out of this CodeProject article

http://www.codeproject.com/KB/WPF/WPFChart3D.aspx

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I've found that ZedGraph is fairly straightforward to use. It can do other plot types in addition to scatterplots.