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Re: Finding pixel values of GeoTIFF image based on lat/lon (ENVI and IDL give different results). [message #81958 is a reply to message #81944]

Mon, 05 November 2012 17:53

David Fanning
Messages: 11724
Registered: August 2001

Senior Member

David Fanning writes:

> xindex = Value_Locate(uvec, pt_x)
> IF pt_x = uvec[xindex] > (uvec[1]-uvec[0])/2 THEN xindex = xindex + 1

Whoops!

Shouldn't write code with one hand on a burrito! :-(

xindex = Value_Locate(uvec, pt_x)
IF (pt_x - uvec[xindex]) GT ((uvec[1]-uvec[0])/2.0) THEN $
xindex = xindex + 1

Cheers,

David

--
David Fanning, Ph.D.
Fanning Software Consulting, Inc.
Coyote's Guide to IDL Programming: http://www.dfanning.com/
Sepore ma de ni thue. ("Perhaps thos speakest truth.")

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[Message index]

		Re: Finding pixel values of GeoTIFF image based on lat/lon (ENVI and IDL give different results). By: Sobriquet on Wed, 07 November 2012 08:57
		Re: Finding pixel values of GeoTIFF image based on lat/lon (ENVI and IDL give different results). By: David Fanning on Mon, 05 November 2012 17:53
		Re: Finding pixel values of GeoTIFF image based on lat/lon (ENVI and IDL give different results). By: David Fanning on Mon, 05 November 2012 17:48
		Re: Finding pixel values of GeoTIFF image based on lat/lon (ENVI and IDL give different results). By: Sobriquet on Mon, 05 November 2012 17:05
		Re: Finding pixel values of GeoTIFF image based on lat/lon (ENVI and IDL give different results). By: DavidF[1] on Mon, 05 November 2012 10:15

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