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Re: identify the pixel location of a specific value [message #48980 is a reply to message #48965]

Tue, 06 June 2006 06:17

David Fanning
Messages: 11724
Registered: August 2001

Senior Member

greg michael writes:

> If a is your image, b will be the minimum value, and i the position of
> that value within a.

Actually, the *first* position of the minimum value within a.
The minimum can obviously be represented more than once in an
image. To find *all* the minimum values, you might use the
WHERE function:

indices = Where(a EQ Min(a), count)
Print, 'There are ' + STRTRIM(count,2) + ' minimum values.

Cheers,

David
--
David Fanning, Ph.D.
Fanning Software Consulting, Inc.
Coyote's Guide to IDL Programming: http://www.dfanning.com/

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[Message index]

		Re: identify the pixel location of a specific value By: Mike[4] on Tue, 06 June 2006 18:05
		Re: identify the pixel location of a specific value By: David Fanning on Tue, 06 June 2006 06:17
		Re: identify the pixel location of a specific value By: greg michael on Tue, 06 June 2006 06:06

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