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Re: Colour maps ... (BYTE_SCALE) [message #14698 is a reply to message #14659]

Mon, 22 March 1999 00:00

David Foster
Messages: 341
Registered: January 1996

Senior Member

Martin Schultz wrote:
>
> David Foster wrote:
>>
>
>>
>> I wrote BYTE_SCALE() because I wanted to be able to specify a minimum
>> value for scaling as well as maximum.
>
> If this is the only reason for a new routine BYTE_SCALE: why don't you
> call
>
> im = bytscl(data, top=cmax-cmin)+cmin
>
> That's what I do when I need a minimum value.
>
> Just 1/2 cent,
> Regards,
> Martin.

Martin -

Well, that's worth more than 1/2 cents. Basically, BYTE_SCALE()
was about my second or third routine that I ever wrote in IDL, back
in 1994, before I was even aware that BYTSCL() even *had* any
keywords! I wrote BYTE_SCALE() and never gave this another
thought.

And of course your method is even faster too. Really pisses me off! :-)

Thanks Martin.

Dave
--

~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ ~~~~~~
David S. Foster Univ. of California, San Diego
Programmer/Analyst Brain Image Analysis Laboratory
foster@bial1.ucsd.edu Department of Psychiatry
(619) 622-5892 8950 Via La Jolla Drive, Suite 2240
La Jolla, CA 92037
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ ~~~~~~

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[Message index]

		Re: Colour maps ... (BYTE_SCALE) By: Martin Schultz on Mon, 15 March 1999 00:00
		Re: Colour maps ... (BYTE_SCALE) By: David Foster on Mon, 22 March 1999 00:00

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