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Re: How to plot multiple cgContour plots using the same colour levels (but containing differing data) [message #88306 is a reply to message #88304]

Thu, 10 April 2014 14:02

David Fanning
Messages: 11724
Registered: August 2001

Senior Member

IDL Beginner writes:

> The above code for contour plot will not work when you have data that ranges between negative and positive . It works the above code when all your data have positive value.
>
> What would you be your advice or suggestion on that.

My best advice would be to not use other people's code unless you
understand it. Rather, I would spend 15-20 minutes with your data and
the cgContour documentation, reading about the various keywords and what
they are used for. Start with the very simplest contour plot:

cgContour, data

Then, read and add keywords to see what they do. Once you have an
understanding of how things work, it will be simple for you to
understand why these commands aren't "working" with negative data.

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]

		Re: How to plot multiple cgContour plots using the same colour levels (but containing differing data) By: Balt on Tue, 31 May 2011 14:16
		Re: How to plot multiple cgContour plots using the same colour levels (but containing differing data) By: David Fanning on Mon, 30 May 2011 21:03
		Re: How to plot multiple cgContour plots using the same colour levels (but containing differing data) By: manodeep@gmail.com on Mon, 30 May 2011 20:25
		Re: How to plot multiple cgContour plots using the same colour levels (but containing differing data) By: Balt on Mon, 30 May 2011 19:20
		Re: How to plot multiple cgContour plots using the same colour levels (but containing differing data) By: David Fanning on Mon, 30 May 2011 17:31
		Re: How to plot multiple cgContour plots using the same colour levels (but containing differing data) By: Balt on Mon, 30 May 2011 16:54
		Re: How to plot multiple cgContour plots using the same colour levels (but containing differing data) By: siumtesfai on Thu, 10 April 2014 13:42
		Re: How to plot multiple cgContour plots using the same colour levels (but containing differing data) By: Phillip Bitzer on Thu, 10 April 2014 13:51
		Re: How to plot multiple cgContour plots using the same colour levels (but containing differing data) By: David Fanning on Thu, 10 April 2014 14:02
		Re: How to plot multiple cgContour plots using the same colour levels (but containing differing data) By: siumtesfai on Fri, 11 April 2014 11:44

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