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

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Since we don't ship a dma (demographic marketing area) map in the sas maps libname,
I decided to 'derive' one from other maps/files...

First I Get a list of all the DMA's and their county & state, from maps.usaac.

Then I merge it with maps.uscounty US county map.

Then I remove the internal boundaries within the dma groupings (using 'proc gremove'),
using the county outlines.

Then I add charttips so you can see the dma number when you mouse over the land areas.
(And I merge in the city names for the dma's, from a spreadsheet)

Note that I'm running this at v9.2, so that I get the long color-list 
from the new ODS Styles.

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