Rails - Sep 2008 - Spider Charts and Gruff: THE JOY OF GRAPHING

I hope this day finds you well.

I need to generate Spider charts (aka radar charts) , and am using Gruff
to do so.

How can I show lines and axis numbers on a Spider chart?  Here''s what
I''m trying to make:

http://img.skitch.com/20080925-m573hhdy4n4x6i92s17knjqjeg.jpg

How can I have those 0 - 100 numbers, and the concentric cirles in the
graph?


Joe
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The more I look at this, the more it seems that I can''t put concentric 
circles or the numbers.  Am I wrong about this?

Also, is there any way to add "bottom-margin" to a spider graph in 
Gruff?  It doesn''t look that way so far...
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