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st: Surface plots or heat maps

From   "Wallace, John" <>
To   <>
Subject   st: Surface plots or heat maps
Date   Wed, 14 Feb 2007 13:11:34 -0800

I've gone through the FAQs and help files, but cannot find any reference
to Stata being able to generate surface plots or heat maps.  I did find
a STB package called -surface written by Adrian Mander, but it appears
to be for the Stata 7 graph engine. It also seems very bare bones and
the z-axis scale is completely arcane (my data was decimal fractions
less than 1 and the scale was in 10's of thousands).

The only other possibility seems to be adapting -tmap (thematic maps by
Maurizio Pisati) to work with a simple graphic file of the coordinate
system I'd like to place my data on and encoding the z-axis in color.
Is there an alternative I'm missing somewhere?  I don't think this is a
particularly novel analysis - excel has a chart object for surface
plots, but its cumbersome to move data in and out of Excel obviously.

Thanks for any advice
John Wallace


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