Re: Q: Extract Elements from a List?
- To: mathgroup at smc.vnet.net
- Subject: [mg29001] Re: Q: Extract Elements from a List?
- From: Jens-Peer Kuska <kuska at informatik.uni-leipzig.de>
- Date: Thu, 24 May 2001 04:07:23 -0400 (EDT)
- Organization: Universitaet Leipzig
- References: <9efk6g$1d8@smc.vnet.net>
- Sender: owner-wri-mathgroup at wolfram.com
Hi,
First /@ Partition[Drop[list, start - 1], step]
??
Regards
Jens
Robert Schuerhuber wrote:
>
> hi!
>
> probably a very easy question, but i couldn't find an answer in the
> mathematica-book:
>
> i need to extract elements from a list, starting th element number x and
> than taking every yth element, eg:
>
> with
>
> list={a,b,c,d,e,f,g,h,i,j}
> start=3;
> step=2:
>
> i'd like to get the list
>
> {c,e,g,i}.
>
> how can i do this in the easiest way?
>
> regards, robert