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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