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Re: BYTSCL function [message #91270 is a reply to message #91269]

Thu, 25 June 2015 05:09

David Fanning
Messages: 11724
Registered: August 2001

Senior Member

g.nacarts@gmail.com writes:

> I am using the BYTSCL function to scale all values of my array and also because I want to be returned in byte type.
>
> For the array A with max = 4745.34 and min = -726643. I used the BYTSCL(A, min=0., max=160.)
>
> For the array B with max = 7.82217e+007 and min = -5.47788e+008 I tried to used only BYTSCL(B) but my image is not good. I guess that's because the max and min values are very large and small respectively?

Linear scaling on such images may result in low-contrast images. You may
prefer a log-type scaling to improve the visual result:

http://www.idlcoyote.com/ip_tips/xstretch.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 thue. ("Perhaps thou speakest truth.")

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[Message index]

		BYTSCL function By: g.nacarts on Thu, 25 June 2015 04:41
		Re: BYTSCL function By: David Fanning on Thu, 25 June 2015 05:09
		Re: BYTSCL function By: Dick Jackson on Thu, 25 June 2015 07:20

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