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Re: Over-PLOT() on MAP()? [message #73919]

Sat, 11 December 2010 18:22

David Fanning
Messages: 11724
Registered: August 2001

Senior Member

Paulo Penteado writes:

> The problem in this case (and in imap) is that the projection can be
> changed (by the property map_projection), and the things put there by
> the plot do not get updated to the new position. One would have to get
> the new map structure, call map_proj_forward again, and update the
> plot data.

Yes, I agree the whole map projection thing has not
been well thought out in the map function.

I do note, however, that it will be hard to convince
me to use anything but the map projection tools of
the Catalyst Library. MapCoord just seems to work
so simply and easily. Set up a map coordinate space,
and then just draw on it, in either lat/lon or projected
XY. All you have to do it tell it which you prefer.
It couldn't be any easier. :-)

Cheers,

David

--
David Fanning, Ph.D.
Fanning Software Consulting, Inc.
Coyote's Guide to IDL Programming: http://www.dfanning.com/
Sepore ma de ni thui. ("Perhaps thou speakest truth.")

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[Message index]

		Re: Over-PLOT() on MAP()? By: David Fanning on Sat, 11 December 2010 18:22
		Re: Over-PLOT() on MAP()? By: penteado on Sat, 11 December 2010 18:01
		Re: Over-PLOT() on MAP()? By: David Fanning on Sat, 11 December 2010 16:55
		Re: Over-PLOT() on MAP()? By: penteado on Sat, 11 December 2010 13:56
		Re: Over-PLOT() on MAP()? By: Matt Haffner on Mon, 13 December 2010 11:23

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