| Re: 3D graphing [message #61982 is a reply to message #61981] |
Mon, 18 August 2008 14:40   |
David Fanning
Messages: 11724
Registered: August 2001
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Senior Member |
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orangelubee writes:
> I've been trying to make a very simple 3D graph for days now and I'm
> completely stumped because I know nothing about this. My data is
> gridded data of temperatures at different levels of the atmosphere
> over Antarctica and I have nice plots using map_set and contour for
> each level separately but I would really like to have a 3D version of
> just one temperature contour throughout the entire atmosphere. Is
> there a way to get a z-axis added to a map and contour at each level?
> I've tried using T3D but I'm not understanding how it applies to
> contour and plot or really how it works at all. I've also tried to
> use the isosurface, scale3 and then polyshade to view a certain
> temperature surface but I keep running into this error: POLYSHADE:
> Vertex 0: X,Y,Z location out of range. which I dont know how to fix.
>
> Is there an easy way to do this or am I way off track?
There is no easy way to do this. And you are probably
slightly off track. :-)
Here is an article that describes how to set up a 3D
coordinate system, and use it with a map. PLOT and
CONTOUR can be drawn in this 3D system by setting the
T3D keyword.
http://www.dfanning.com/tips/scatter3d.html
Direct graphics is probably the *worst* way to do this,
but object graphics is even harder. *Far* harder. But is
the only way to get professional looking results, I would
guess.
Cheers,
David
--
David Fanning, Ph.D.
Fanning Software Consulting, Inc.
Coyote's Guide to IDL Programming (www.dfanning.com)
Sepore ma de ni thui. ("Perhaps thou speakest truth.")
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