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Re: Intersection of 2 sets--Beginner IDL question [message #27294 is a reply to message #27283]

Tue, 16 October 2001 23:58

R.Bauer
Messages: 1424
Registered: November 1998

Senior Member

Ted Cary wrote:
>
> Is there any programming technique for finding the intersection of two sets
> (arrays) of numbers without using WHERE in a loop to search the larger array
> for every element in the smaller array? It seems like a very clumsy way to
> find values shared by both arrays, especially with integer sets/arrays.
>

> Thanks.

Dear Ted,
we have some routines which might be useful for you too.

http://www.fz-juelich.de/icg/icg1/idl_icglib/idl_source/idl_ html/dbase/download/a_and_b.tar.gz
http://www.fz-juelich.de/icg/icg1/idl_icglib/idl_source/idl_ html/dbase/download/a_or_b.tar.gz
http://www.fz-juelich.de/icg/icg1/idl_icglib/idl_source/idl_ html/dbase/download/a_not_b.tar.gz
http://www.fz-juelich.de/icg/icg1/idl_icglib/idl_source/idl_ html/dbase/download/a_xor_b.tar.gz
http://www.fz-juelich.de/icg/icg1/idl_icglib/idl_source/idl_ html/dbase/download/veklogic.tar.gz

http://www.fz-juelich.de/icg/icg1/idl_icglib/idl_source/idl_ html/dbase/download/indexlogic.tar.gz

For licensing of more routines please have a look at
http://www.fz-juelich.de/icg/icg1/idl_icglib/idl_lib_intro.h tml

Reimar
--
Reimar Bauer

Institut fuer Stratosphaerische Chemie (ICG-1)
Forschungszentrum Juelich
email: R.Bauer@fz-juelich.de
http://www.fz-juelich.de/icg/icg1/
============================================================ ======
a IDL library at ForschungsZentrum Juelich
http://www.fz-juelich.de/icg/icg1/idl_icglib/idl_lib_intro.h tml

http://www.fz-juelich.de/zb/text/publikation/juel3786.html
============================================================ ======

read something about linux / windows
http://www.suse.de/de/news/hotnews/MS.html

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[Message index]

		Re: Intersection of 2 sets--Beginner IDL question By: John-David T. Smith on Wed, 17 October 2001 09:51
		Re: Intersection of 2 sets--Beginner IDL question By: Craig Markwardt on Wed, 17 October 2001 08:05
		Re: Intersection of 2 sets--Beginner IDL question By: David Fanning on Wed, 17 October 2001 06:58
		Re: Intersection of 2 sets--Beginner IDL question By: R.Bauer on Tue, 16 October 2001 23:58
		Re: Intersection of 2 sets--Beginner IDL question By: John-David T. Smith on Tue, 16 October 2001 22:00
		Re: Intersection of 2 sets--Beginner IDL question By: David Fanning on Tue, 16 October 2001 20:52
		Re: Intersection of 2 sets--Beginner IDL question By: Mark Hadfield on Tue, 16 October 2001 20:37
		Re: Intersection of 2 sets--Beginner IDL question By: David Fanning on Tue, 16 October 2001 20:01
		Re: Intersection of 2 sets--Beginner IDL question By: Craig Markwardt on Wed, 17 October 2001 14:49

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