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Re: Extract Array positions for a set of Values [message #75416]

Thu, 10 March 2011 06:54

wlandsman
Messages: 743
Registered: June 2000

Senior Member

On Thursday, March 10, 2011 8:49:41 AM UTC-5, Jeremy Bailin wrote:

> So the conclusion, not surprisingly, is that histogram kicks ass. ;-) Note also that the time in the value_locate solution is essentially all in the value_locate part, not in the sorting step.

Yes, histogram is will suited for this problem. HISTOGRAM is not so good when the data values cover a large range say 0 - 1000000.

MATCH2 is overkill because it doesn't assume the values are integers, doesn't assume the values in the B vector are unique, and supplies matching indices for all elements in both A and B.

--Wayne

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[Message index]

		Re: Extract Array positions for a set of Values By: wlandsman on Thu, 10 March 2011 06:54
		Re: Extract Array positions for a set of Values By: Jeremy Bailin on Thu, 10 March 2011 05:49
		Re: Extract Array positions for a set of Values By: Gray on Wed, 09 March 2011 13:29
		Re: Extract Array positions for a set of Values By: Jeremy Bailin on Wed, 09 March 2011 06:37
		Re: Extract Array positions for a set of Values By: wlandsman on Wed, 09 March 2011 03:08

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