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Re: How to Sort/Uniq a list and keep its original index [message #50703 is a reply to message #50698]

Thu, 12 October 2006 09:19

Jean H.
Messages: 472
Registered: July 2006

Senior Member

without the histogram, you could try:

tmp = lindgen(650000)
tmp[indexU] = -1
duplicate = tmp[where tmp ne -1)]

Jean

Dilkushi@gmail.com wrote:
> Dear all
> I have to sort a file with 650,000 records in search of duplicate
> records.. and I need a list of duplicates (not a list without
> duplicates)...
> indexS=sort(testTotal)
> test=testTotal[indexS]
> indexU=uniq(test)
>
> indexU is an index with no duplicates..
> how do I get an index pertaining to the duplicates only?..
> please help..
> thanks in advance
> dilkushi
>

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[Message index]

		Re: How to Sort/Uniq a list and keep its original index By: JD Smith on Thu, 12 October 2006 11:16
		Re: How to Sort/Uniq a list and keep its original index By: Jean H. on Thu, 12 October 2006 09:19
		Re: How to Sort/Uniq a list and keep its original index By: David Fanning on Wed, 11 October 2006 16:12
		Re: How to Sort/Uniq a list and keep its original index By: Dilkushi@gmail.com on Wed, 18 October 2006 11:36

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