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Re: intersection of 2 arrays [message #19651 is a reply to message #19647]

Mon, 10 April 2000 00:00

davidf
Messages: 2866
Registered: September 1996

Senior Member

Dave Marshall (dmarshall@ivory.trentu.ca) writes:

> I never seem to have the problem at the time when it is being discussed
> here since I remember something about this in the past.
>
> I have 2 arrays and would like a 3rd that contains the set intersection of
> the 2. Each element in each is unique.
>
> This seems like a basic function but after searching in help, etc. I didn't
> come up with an elegant solution. Maybe its too basic and I should know it?

There is some information about this sort of thing in this
article on my web page:

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

Cheers,

David

--
David Fanning, Ph.D.
Fanning Software Consulting
Phone: 970-221-0438 E-Mail: davidf@dfanning.com
Coyote's Guide to IDL Programming: http://www.dfanning.com/
Toll-Free IDL Book Orders: 1-888-461-0155

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		Re: intersection of 2 arrays By: Craig Markwardt on Mon, 10 April 2000 00:00
		Re: intersection of 2 arrays By: davidf on Mon, 10 April 2000 00:00

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