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Re: Function BYTSCL [message #24629 is a reply to message #24627]

Tue, 10 April 2001 16:43

davidf
Messages: 2866
Registered: September 1996

Senior Member

David Fanning (davidf@dfanning.com) writes:

> What BYTSCL does is take the data, finds the minimum
> and maximum of the data, then linearly maps the min
> and max to 0 and 255. This is the scaling function.
> Then, it adds a translation to the scaled vector, so
> that the minimum value is set to zero. Then, it converts
> the whole thing to BYTE type.

I was driving home from the bookstore trying to think
of an excuse to give my wife for why I was 45 minutes
late picking up my son from school, when it suddenly
occurred to me that this problem is *exactly* like
trying to convert Fahrenheit to Celsius degrees!

Funny how and when these things come to you, isn't it. :-)

Cheers,

David

--
David Fanning, Ph.D.
Fanning Software Consulting
Phone: 970-221-0438 E-Mail: davidf@dfanning.com
Coyote's Guide to IDL Programming: http://www.dfanning.com/
Toll-Free IDL Book Orders: 1-888-461-0155

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[Message index]

		Re: Function BYTSCL By: marc schellens[1] on Tue, 10 April 2001 18:20
		Re: Function BYTSCL By: davidf on Tue, 10 April 2001 16:43
		Re: Function BYTSCL By: davidf on Tue, 10 April 2001 10:18
		Re: Function BYTSCL By: Jaco van Gorkom on Tue, 10 April 2001 09:37
		Re: Function BYTSCL By: davidf on Tue, 10 April 2001 08:10
		Re: Function BYTSCL By: Liam E. Gumley on Tue, 10 April 2001 07:44
		Re: Function BYTSCL By: Steffen Kernchen on Tue, 10 April 2001 07:42
		Re: Function BYTSCL By: davidf on Tue, 10 April 2001 07:30
		Re: Function BYTSCL By: Jaco van Gorkom on Tue, 10 April 2001 07:18
		Re: Function BYTSCL By: davidf on Tue, 10 April 2001 06:55
		Re: Function BYTSCL By: marc schellens[1] on Tue, 10 April 2001 03:08
		Re: Function BYTSCL By: Steffen Kernchen on Tue, 10 April 2001 03:51
		Re: Function BYTSCL By: davidf on Tue, 10 April 2001 03:17

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