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Re: Scaling cgColorbar to match data [message #89407 is a reply to message #89403]

Wed, 08 October 2014 20:40

David Fanning
Messages: 11724
Registered: August 2001

Senior Member

Richard writes:

> I'm attempting to generate a plot with varying symbol colours. I've
been able to scale my large range of data points to a 256 colour table
but I haven't got the foggiest as how to scale the cgColorbar to match.
At the bottom of this post is a simple example of what I'm attempting to
do.

I'm not sure I'm seeing what you are seeing, but I would change this
code:

> cgloadct, col, NColors=ncol
>
> PLOTSYM, 0, /FILL
>
> FOR i=0,49 DO BEGIN
> cgplot,[x[i]],[y[i]],PSYM = 8,/OVERPLOT,color=FIX(Colors_test[i])
> ENDFOR

To this:

cgloadct, col, NColors=ncol
FOR i=0,49 DO BEGIN
cgplot,[x[i]],[y[i]],PSYM = 16,/OVERPLOT,color=BYTE(Colors_test[i])
ENDFOR

Does that make any difference?

Cheers,

David

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

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[Message index]

		Scaling cgColorbar to match data By: Richard on Tue, 07 October 2014 18:22
		Re: Scaling cgColorbar to match data By: David Fanning on Wed, 08 October 2014 20:40
		Re: Scaling cgColorbar to match data By: Richard on Thu, 09 October 2014 07:10

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