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Re: Contour mapping of elevation points [message #83305 is a reply to message #83304]

Mon, 25 February 2013 09:47

David Fanning
Messages: 11724
Registered: August 2001

Senior Member

gpeterso@ucsc.edu writes:

> I am trying to create a contour map of elevation points I have. the file is in .txt form and is an array 824 by 914. I know that each elevation point is equally spaced and the longitude starts at 270 and ends at 360 and the latitude starts at 0 and ends at 90S.
>
> I was able to configure a contour plot of that data, by simply reading in the two-dimensional elevation data and plotting. However, I am not sure if this is actually an accurate representation of the data. I've started to create a program that will assign the appropriate longitude and latitude but I am getting stuck.
>
> If anyone knows how to help me, that would be much appreciated! Thanks

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

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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