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Re: overlaying graphs on top of maps [message #45708]

Fri, 30 September 2005 09:10

David Fanning
Messages: 11724
Registered: August 2001

Senior Member

Martin writes:

>
> I'm trying to overlay several graphs on top of a map projection in
> order to show varying degrees of pollution in different parts of the
> globe.
>
> Out of naivety or optimism I tried using OPLOT although I got the
> error;
> % OPLOT: Value of Latitude is out of allowed range.
>
> Could someone give me a clue about how to go about doing this at all? I
> have a sneaking suspicion that someone will say Object Graphics!

Object Graphics!? I don't think so. I would have said
PLOT with the NOERASE keyword set. :-)

Cheers,

David

P.S. Your OPLOT would have worked if you had set
up a plot coordinate system first. There are many
ways to do this, but one way would have been to
make a pixmap of your map window and draw a plot
into that window. Then you could switch back to your
map window and do your OPLOT there.

--
David Fanning, Ph.D.
Fanning Software Consulting, Inc.
Coyote's Guide to IDL Programming: http://www.dfanning.com/

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		Re: overlaying graphs on top of maps By: David Fanning on Fri, 30 September 2005 09:10
		Re: overlaying graphs on top of maps By: Paul Van Delst[1] on Fri, 30 September 2005 08:47

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