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Two Images in One Window - Like oplot or /NOERASE [message #27753]

Thu, 01 November 2001 06:24

Emmler, Oliver
Messages: 14
Registered: May 2001

Junior Member

Hello,

I produce two images in IDL

a) Reference
b) ROI of Reference

Now i want to draw first the reference image an then plot the roi with
another colortable like it is possible for plots with oplot or the keyword
/noerase. Is there any possibility to do so ?

Regards
Oliver

--
Oliver Emmler
University of Heidelberg
Departement of Radiology
Phone: +49-6221-7963059 E-Mail: Oliver.Emmler@med.uni-heidelberg.de

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Re: Two Images in One Window - Like oplot or /NOERASE [message #28927 is a reply to message #27753]

Wed, 23 January 2002 06:56

David Fanning
Messages: 11724
Registered: August 2001

Senior Member

Paul Joe (paul.joe@ec.gc.ca) writes:

> the problem with 24 bit displays is if you want to create a 8bit gif image with
> 256 shades in each image.

I'm not sure I understand what the problem is here.
Color_Quan seems to do this perfectly with the COLORS
keyword set to 256.

Cheers,

David

--
David W. Fanning, Ph.D.
Fanning Software Consulting
Phone: 970-221-0438, E-mail: david@dfanning.com
Coyote's Guide to IDL Programming: http://www.dfanning.com/
Toll-Free IDL Book Orders: 1-888-461-0155

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