New question: I've searched, but can't find an answer.  Is there a way 
to only show 4 grid lines for a Radar graph that has values up to 100? I 
just want it to show the grid lines (and values) for 0, 25, 50, 75, and 
100.

Is there some way to set the interval between grid lines to be 25 
instead of 1?
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