| Re: IDL maps [message #8759] |
Wed, 23 April 1997 00:00 |
davidf
Messages: 2866
Registered: September 1996
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Senior Member |
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Stephane Erard writes:
> Does anybody know if there's a way to use another map instead of the
> continent
> borders provided with IDL? More specifically, I'd like to use a set of
> altimetric lines
> for different planets, and superimpose them on space or telescopic
> images.
> The solution with contour, /overplot is not particularly exciting.
There is nothing special about the Map_Continents routine that
is used to put map boundaries on map projections. It simply
used PLOTS to draw lines from one point to another, each
point expressed in lat/lon coordinates.
It would be quite easy to build your own Map_Planet routine.
All you need is a list of the coordinates and, perhaps, a flag
to let you know if the "pen" should be up or down.
Cheers!
David
----------------------------------------------------------
David Fanning, Ph.D.
Fanning Software Consulting
Customizable IDL Programming Courses
Phone: 970-221-0438 E-Mail: davidf@dfanning.com
Coyote's Guide to IDL Programming: http://www.dfanning.com
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