Click here to see the v9.2 SAS code.
Click here to see the v9.2 example.

Click here to see the v9.1.3 SAS code.
Click here to see the v9.1.3 example.

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In v9.1.3, map areas that didn't have any data were "empty" (ie, you could
see the background through them).  You could control the outline color of 
those areas using the 'cempty' otpion, but there was no easy way to control
the fill color (you had to insert 'fake' data into your response dataset, etc).

In v9.2, the new cdefault gmap option lets you easily control the fill color
of the map areas that have no data.

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