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Re: Contour mapping of elevation points [message #83304 is a reply to message #83303]

Mon, 25 February 2013 09:53

David Fanning
Messages: 11724
Registered: August 2001

Senior Member

David Fanning writes:

> s = Size(array, /Dimensions)
> lats = Scale_Vector(Findgen(s[0]), 0, 90)
> lons = Scale_Vector(Findgen(s[1]), 270, 360)
> cgContour, array, lons, lats

Oh, 0 to 90S you said. Then,

lats = Scale_Vector(Findgen(s[0]), 0, 90) - 90

It is always hard to say if your array is upside down or not, but you
will have to check. IDL has a different notion of "orgin" on maps then
the rest of the world. Quite often you have to reverse the array to get
it oriented properly. If you do, then:

array = Reverse(array,2)

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: Contour mapping of elevation points By: David Fanning on Mon, 25 February 2013 19:31
		Re: Contour mapping of elevation points By: gpeterso on Mon, 25 February 2013 18:17
		Re: Contour mapping of elevation points By: DavidF[1] on Mon, 25 February 2013 11:33
		Re: Contour mapping of elevation points By: gpeterso on Mon, 25 February 2013 10:36
		Re: Contour mapping of elevation points By: gpeterso on Mon, 25 February 2013 10:29
		Re: Contour mapping of elevation points By: David Fanning on Mon, 25 February 2013 09:53
		Re: Contour mapping of elevation points By: David Fanning on Mon, 25 February 2013 09:47

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