comp.lang.idl-pvwave archive: archive

Home » Public Forums » archive » Re: Array/Group Help

Show: Today's Messages :: Show Polls :: Message Navigator
E-mail to friend

Re: Array/Group Help [message #62990 is a reply to message #62988]

Tue, 21 October 2008 15:49

David Fanning
Messages: 11724
Registered: August 2001

Senior Member

plim.dreaming@gmail.com writes:

> There must be a real simple way of doing the following but my
> knowledge of IDL is real limited.
>
> I have three 1-D arrays. Each array contains numbers from 1 to 1000.
> But they differ because the arrays contain different arrangements of
> numbers and different number of number.
>
> I would like to get a list of numbers that exist in all three arrays.
> In terms of groups I have three groups and I want to know what the
> intersect is.

Assuming the "numbers" are integers, you can use the set
methods outlined here:

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

Cheers,

David
--
David Fanning, Ph.D.
Coyote's Guide to IDL Programming (www.dfanning.com)
Sepore ma de ni thui. ("Perhaps thou speakest truth.")

Report message to a moderator

[Message index]

		Re: Array/Group Help By: plim.dreaming on Tue, 21 October 2008 16:19
		Re: Array/Group Help By: David Fanning on Tue, 21 October 2008 15:49

Previous Topic:	Array/Group Help
Next Topic:	Re: QUESTION: is there a command in idl which could clean up memory pieces?

-=] Back to Top [=-

[ Syndicate this forum (XML) ] [

] [

]

Current Time: Sat Oct 11 11:15:50 PDT 2025

Total time taken to generate the page: 0.87611 seconds