| Re: country boundary [message #11304] |
Thu, 26 March 1998 00:00 |
davidf
Messages: 2866
Registered: September 1996
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Senior Member |
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Pu Bu Ci Ren (pubu@gfi.uib.no) writes:
> I am trying to use IDL to overplot contour on a certain
> map_projection, but I can only get continent boundary. Does anybody know
> how to do it, I am running IDL on windows, pretty old version (3.00).
> Can anybody give me any hint ?
Here is a hint: you may want to upgrade. :-) I suppose it is
more evidence of getting old, but I can't even *remember* IDL
3.0! You might want to upgrade (or buy my book) just for the
better manuals.
But I think that even from the get-go you could put contours
on map projections. Try this after you have set up your map
projection:
Contour, data, x, y, /Overplot
Where your x and y vectors are expressed in units of latitude
and longitude. (These vectors are REQUIRED when outputting on
top of a map projection.)
Tashi Delke,
David
-----------------------------------------------------------
David Fanning, Ph.D.
Fanning Software Consulting
E-Mail: davidf@dfanning.com
Phone: 970-221-0438
Coyote's Guide to IDL Programming: http://www.dfanning.com/
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