Re: Parts of a list
- To: mathgroup at smc.vnet.net
- Subject: [mg15463] Re: Parts of a list
- From: Harald Giese <giese at dkrz.de>
- Date: Mon, 18 Jan 1999 04:22:07 -0500
- Organization: Institut fuer Meereskunde, Universitaet Hamburg
- References: <77jkve$304@smc.vnet.net>
- Sender: owner-wri-mathgroup at wolfram.com
Hossein Kazemi wrote:
>
> I have a list (matrix) that looks like this
>
> x={{1,0},{2.5, .5},{3,0},{0,2}}
>
> Now I want to eliminate those vectors that have zero for the second
> case. That is, I want to get
>
> {{2.5, .5},{0,2}}.
>
> Is there a quick way of doing this?
> I tried to apply Select to this but could not get it to work.
> ...
Hi Hossein,
Use the function "Select", in your case:
Select[x, (#[[2]] != 0.)&]
Regards,
Harald
--
Harald Giese
Email: giese at dkrz.de
Phone: +49 (0)40 4123 5796; Fax: +49 (0)40 5605724 Institut fuer
Meereskunde der Universitaet Hamburg (Institute of Oceanography of the
University of Hamburg) Troplowitzstrasse 7, D-22529 Hamburg