| Re: IDL map_set question [message #8906] |
Tue, 13 May 1997 00:00 |
davidf
Messages: 2866
Registered: September 1996
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Senior Member |
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Wayne Keith <waynek@spacsun.rice.edu> writes:
> I am fairly new to IDL and am having trouble with the map_set function
> making an orthographic projection. I can do the default, but in the
> reference guide it says "If the keyword LIMIT is not set, the region of
> the globe mapped to the UV plane is the hemisphere around the center of
> the projection." I am doing a plot with the North pole centered and
> would like to limit the plot at 30deg, but I can't figure out how to make
> the LIMIT keyword work properly for this projection style. Folowing the
> reference guide directions for LIMIT I keep getting floating point
> errors. Can anyone help?
Polar orthographic? Auh, oh.
I tried this and didn't get any errors:
IDL> Map_Set, /Ortho, 90, 0, /Grid, /Cont, Limit=[30,-180, 90, 180], /Label
Of course, I didn't try to put any *data* on it. :-)
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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