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Re: Widget_draw coordinates? [message #45097 is a reply to message #44948]

Fri, 29 July 2005 10:42

David Fanning
Messages: 11724
Registered: August 2001

Senior Member

David Fanning writes:

> Just be sure you *have* a data coordinate system established
> when you do the conversion! Typically, you save !X, and !Y
> from a PLOT command and restore them before the conversion
> takes place. Or, this occurs just after a PLOT, CONTOUR,
> SURFACE, etc.

See ZPLOT for an example of how this is done, if you
don't understand how to set up a data coordinate system:

http://www.dfanning.com/programs/zplot.pro

Cheers,

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

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[Message index]

		Re: Widget_draw coordinates? By: David Fanning on Fri, 29 July 2005 10:21
		Re: Widget_draw coordinates? By: b_efremova@yahoo.com on Fri, 29 July 2005 11:01
		Re: Widget_draw coordinates? By: David Fanning on Fri, 29 July 2005 10:42

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