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Re: tvimage and multiplot [message #74895 is a reply to message #74894]

Fri, 04 February 2011 10:50

David Fanning
Messages: 11724
Registered: August 2001

Senior Member

Gray writes:

> I'm using DG, multiplot, and tvimage to display a set of three
> images. Here's my code; can anyone tell me why my images are being
> displayed on top of each other and not in the right places?
>
> multiplot, [1,3]
> tvimage, congrid(sub1,200,200), /axes, acolor='yellow', $
> axkeywords={ticklen:0.}, /keep
> plots, 99.5, 99.5, psym=6, color=clr1
> multiplot
> tvimage, congrid(sub2,200,200), /axes, acolor='green', $
> axkeywords={ticklen:0.}, /keep
> plots, 99.5, 99.5, psym=6, color=clr1
> multiplot
> tvimage, congrid(sub3,200,200), /axes, acolor='magenta', $
> axkeywords={ticklen:0.}, /keep
> plots, 99.5, 99.5, psym=6, color=clr1
> multiplot, /reset
>
> Only the final one ends up being displayed, which probably means
> they're being overplotted. Help? Thanks!

TVImage responds to the value of !P.Multi. I don't see Multiplot
setting this variable:

IDL> multiplot,[1,3]
IDL> print, !P.MULTI
0 0 0 0 0

Instead of Multiplot, I would set !P.Multi=[0,1,3]. I would
also set the SAVE keyword on TVImage so your PLOTS command
goes in the right place. Be sure to set !P.MULTI back to zeros
when you have typed your three TVImage commands.

IDL> !P.Multi=0

Cheers,

David

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

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[Message index]

		Re: tvimage and multiplot By: Gray on Fri, 04 February 2011 13:50
		Re: tvimage and multiplot By: David Fanning on Fri, 04 February 2011 10:57
		Re: tvimage and multiplot By: David Fanning on Fri, 04 February 2011 10:54
		Re: tvimage and multiplot By: David Fanning on Fri, 04 February 2011 10:50

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