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

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Note that this technique is included in the book SAS/Graph: Beyond the Basics,
and all the 'tricks' used to create it are described in great detail!

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This is a custom SAS/Graph calendar chart,
with the daily high temperature plotted as a color.

Note that the colors I picked to designate the color
changes are somewhat 'arbitrary' - over 100 degrees 
is hot (red) and under 32 is cold/freezing (blue).

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