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Re: subset a 2d array [message #61939]

Wed, 13 August 2008 20:19

David Fanning
Messages: 11724
Registered: August 2001

Senior Member

xiao writes:

> For example, i hava an array like this:
>
> 13, 14, 15, 16, 17
> 23, 24, 25,26, 27
> 2, 4 , 5, 66 ,7
> 13, 14, 15, 16, 17
> 13, 14, 15, 16, 17
>
> i know the center value is 5 .Then i want to subset the array to 3*3
> and 5 is still the center. Just subset like this :
>
> 24, 25,26
> 4 , 5, 66
> 14, 15, 16,
>
> Any one has good ideas how can i do that?

How about something like this:

subarray = array[1:3, 1:3]

Cheers,

David

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

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