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Re: Contour Problem [message #77036 is a reply to message #7115]

Mon, 25 July 2011 11:13

David Fanning
Messages: 11724
Registered: August 2001

Senior Member

Alexa writes:

> I think this is probably a pretty easy problem but I could get help
> that'd be great.
>
> I'm making a contour plot and and I want to change the values of the
> axes so I'm doing
>
> x=[-6, 0]
> y=[-3, 1]
>
> Contour, x, y, z
>
> But I get an error that says that x and y need to be 2D arrays, but
> aren't those already 2D arrays? Do I have the syntax wrong?

Well, usually the syntax of the Contour plot is like this:

Contour, z, x, y

Maybe you want something like this:

s = Size(z, /Dimensions)
x = Scale_Vector(Findgen(s[0]), -6, 0)
y = Scale_Vector(Findgen(s[1]), -3, 1)
Contour, z, x, y

You can find Scale_Vector here:

http://www.idlcoyote.com/programs/scale_vector.pro

You might need other routines from the Coyote Library, too.
It is best to download the whole thing.

http://www.idlcoyote.com/code_tips/installcoyote.php

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]

		CONTOUR problem By: Reginald Tang on Tue, 01 October 1996 00:00
		Re: Contour Problem By: btt on Mon, 26 April 2004 06:22
		Re: Contour Problem By: Christopher Lee on Sat, 24 April 2004 04:39
		Re: Contour Problem By: Jeff Patrick on Mon, 26 April 2004 09:04
		Re: Contour Problem By: James Kuyper on Mon, 26 April 2004 11:14
		Re: CONTOUR problem By: xiao zhang on Wed, 27 August 2008 07:09
		Re: CONTOUR problem By: David Fanning on Wed, 27 August 2008 07:14
		Re: CONTOUR problem By: xiao zhang on Wed, 27 August 2008 07:02
		Re: CONTOUR problem By: David Fanning on Wed, 27 August 2008 07:13
		Re: CONTOUR problem By: Wox on Wed, 27 August 2008 01:06
		Re: CONTOUR problem By: xiao zhang on Wed, 27 August 2008 08:02
		Re: CONTOUR problem By: Wox on Wed, 27 August 2008 08:00
		Re: CONTOUR problem By: David Fanning on Wed, 27 August 2008 07:51
		Re: CONTOUR problem By: xiao zhang on Wed, 27 August 2008 07:41
		Re: CONTOUR problem By: xiao zhang on Wed, 27 August 2008 07:16
		Re: Contour Problem By: David Fanning on Mon, 25 July 2011 11:13

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