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Re: histogram & reverse_indices [message #30216 is a reply to message #30071]

Tue, 09 April 2002 19:35

Craig Markwardt
Messages: 1869
Registered: November 1996

Senior Member

Wayne Landsman <landsman@mpb.gsfc.nasa.gov> writes:

> Ken Mankoff wrote:
>
...
>> I want my algorithm to do the following: Return the index of all the
>> quadruplets that have at least 3 out of 4 numbers equal to each other
>> (i.e. for the above array, it should return [0,1,4]
>
> Here's a non-loop solution for the specific case, although it is a
> solution that is difficult to generalize, and which may be less
> understandable and slower than simply using a loop.

Ooof, Wayne beat me to the punch. It looks like a good technique.

Craig

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Craig B. Markwardt, Ph.D. EMAIL: craigmnet@cow.physics.wisc.edu
Astrophysics, IDL, Finance, Derivatives | Remove "net" for better response
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[Message index]

		histogram & reverse_indices By: Ken Mankoff on Tue, 09 April 2002 12:15
		Re: histogram & reverse_indices By: Ken Mankoff on Wed, 10 April 2002 07:26
		Re: histogram & reverse_indices By: the_cacc on Wed, 10 April 2002 03:02
		Re: histogram & reverse_indices By: Craig Markwardt on Tue, 09 April 2002 19:35
		Re: histogram & reverse_indices By: Wayne Landsman on Tue, 09 April 2002 13:47

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