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Re: Removing repeating array values [message #48106 is a reply to message #48105]

Tue, 28 March 2006 12:30

David Fanning
Messages: 11724
Registered: August 2001

Senior Member

Jonathan Wolfe writes:

> Is there an easier way than a for loop to remove repeating values
> within an array? For example, I have two arrays and am trying to match
> the closest value from one with the other using a where() statement.
> When the where statement is returned, I have multiple instances of the
> same value; however, I just want to keep one of these. A for loop
> works, but computing speed is slow, I'm running on an old 700MHz PIII.
> Do you know of a faster way? Thanks for the help!

Removing elements from an array is tailor-made for
the HISTOGRAM function. See the Histogram Tutorial for
an example:

http://www.dfanning.com/tips/histogram_tutorial.html

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: Removing repeating array values By: mmeron on Tue, 28 March 2006 13:26
		Re: Removing repeating array values By: David Fanning on Tue, 28 March 2006 13:02
		Re: Removing repeating array values By: vorticitywolfe on Tue, 28 March 2006 12:50
		Re: Removing repeating array values By: savoie on Tue, 28 March 2006 12:43
		Re: Removing repeating array values By: mchinand on Tue, 28 March 2006 12:40
		Re: Removing repeating array values By: David Fanning on Tue, 28 March 2006 12:30

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