comp.lang.idl-pvwave archive: archive

Home » Public Forums » archive » array handling

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

Re: array handling [message #74187 is a reply to message #52128]

Mon, 03 January 2011 11:10

Paul Van Delst[1]
Messages: 1157
Registered: April 2002

Senior Member

David Fanning 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

Or for the IDL 8-ers out there:

IDL> array = indgen(10)
IDL> print, array
0 1 2 3 4 5 6 7 8 9
IDL> print, array[0:-1:2]
0 2 4 6 8

and if you want the even indices (at least, even for those of us that start counting things at one :o),

IDL> print, array[1:-1:2]
1 3 5 7 9

cheers,

paulv

p.s. happy new year btw....

Report message to a moderator

[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

Previous Topic:	Re: stl files
Next Topic:	IDL output directed to STDERR-- can't seem to work around...

-=] Back to Top [=-

[ Syndicate this forum (XML) ] [

] [

]

Current Time: Sat Oct 11 15:12:53 PDT 2025

Total time taken to generate the page: 1.67903 seconds