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Re: array handling [message #74242 is a reply to message #74188]

Wed, 05 January 2011 07:07

MC
Messages: 50
Registered: September 1996

Member

On Jan 4, 7:16 am, David Fanning <n...@dfanning.com> wrote:
> bing999 writes:
>> Thanks for answering. But what I want is to divide the number of
>> elements of my array by 2 by keeping only elements with odd index for
>> instance. Is there an IDL routine which does it?
>
> IDL> array = indgen(10)
> IDL> print, array
> 0 1 2 3 4 5 6 7 8 9
> IDL> print, rebin(array, 5)
> 0 2 4 6 8
>
> Cheers,
>
> David
>

Err, isn't that's going to average the data without the /sample
keyword? As an alternative, how about about using reform:

IDL> array = indgen(10)
IDL> evenodd=reform(array,2,5)
IDL> print,"even:" & print,evenodd(0,*)
IDL> print,"odd:" & print,evenodd(1,*)

As one line:
print,(reform(array,2,5))(1,*)

Cheers MC

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[Message index]

		array handling By: jochem.verelst@gmail. on Sat, 06 January 2007 02:59
		Re: array handling By: natha on Mon, 03 January 2011 11:50
		Re: array handling By: Paul Van Delst[1] on Mon, 03 January 2011 11:10
		Re: array handling By: David Fanning on Mon, 03 January 2011 10:16
		Re: array handling By: MC on Wed, 05 January 2011 07:07
		Re: array handling By: Thibault Garel on Mon, 03 January 2011 10:08
		Re: array handling By: sirvival on Mon, 03 January 2011 06:04
		Re: array handling By: MC on Wed, 05 January 2011 13:30
		Re: array handling By: David Fanning on Wed, 05 January 2011 07:20
		Re: array handling By: David Fanning on Wed, 05 January 2011 07:16

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