Click here to see the SAS code.
Click here to see the example.


This graph was inspired by the following blog:

The graph in the blog originally had an error, such that the 
'*' markers from this past winter were plotting much colder 
(closer to the center) than they should.  Here is the original
wrong graph (created with R):

I wrote a SAS/Graph custom plot to plot the data in the same way,
and plot it correctly.  Upon seeing my version, the author of the 
blog realized the problem, and re-wrote his graph.

Here's my version:

I use annotated function='pie' to draw the rings, and place the 
text & markers at the appropriate locations on the polar plot.

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