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Re: subset a 2d array [message #61938 is a reply to message #61937]

Wed, 13 August 2008 20:22

xiao zhang
Messages: 81
Registered: June 2008

Member

On Aug 13, 10:19 pm, David Fanning <n...@dfanning.com> wrote:
> 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.")
hmmm... The problem is I have a array like 240*500. And all the
values are different. And I do not know the row and column. I only
know the center value should be 2.5 . Then ,how can I do that? :)
Thank you~

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[Message index]

		Re: subset a 2d array By: xiao zhang on Thu, 14 August 2008 09:46
		Re: subset a 2d array By: David Fanning on Thu, 14 August 2008 09:34
		Re: subset a 2d array By: xiao zhang on Thu, 14 August 2008 09:24
		Re: subset a 2d array By: xiao zhang on Thu, 14 August 2008 07:54
		Re: subset a 2d array By: David Fanning on Wed, 13 August 2008 20:53
		Re: subset a 2d array By: xiao zhang on Wed, 13 August 2008 20:22

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