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Re: Contour overlay - control orientation? [message #84135 is a reply to message #84133]

Fri, 26 April 2013 10:08

DAVIDE LENA
Messages: 22
Registered: September 2011

Junior Member

On Friday, April 26, 2013 12:04:37 PM UTC-4, David Fanning wrote:
> Gurd writes:
>
>
>
>> I wander if it possible to make a contour plot, than change the orientation and overlay it on another image.
>
>> In other words: I have two images of the same object at different wavelengths. One of the two has no WCS, but I know the relative orientation. Instead of going through the process rotating one of the images it would be nice to change just the contours orientation. Is it possible?
>
>
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> I suppose it depends on what you mean by "I have the contours". If you
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> mean you know the points that make up a contour line (ie, you obtained
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> the contour by means of ISOCONTOUR or the PATH** keywords to the CONTOUR
>
> command), then it is fairly easy to "rotate" them.

I make the contours with cgContour.
...are you suggesting to apply a rotation to the points of the contour lines?

> It is probably harder
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> to decide upon which point they should be "rotated" about. :-)
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>
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> If this is not what you mean, I think it would be easier to rotate the
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> image.
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>
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> Cheers,
>
>
>
> David
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>
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>
>
>
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> --
>
> 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: Contour overlay - control orientation? By: David Fanning on Fri, 26 April 2013 10:25
		Re: Contour overlay - control orientation? By: DAVIDE LENA on Fri, 26 April 2013 10:08
		Re: Contour overlay - control orientation? By: David Fanning on Fri, 26 April 2013 09:04

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