RE: Q: Extract Elements from a List?
- To: mathgroup at smc.vnet.net
- Subject: [mg28995] RE: [mg28968] Q: Extract Elements from a List?
- From: "David Park" <djmp at earthlink.net>
- Date: Thu, 24 May 2001 04:07:15 -0400 (EDT)
- Sender: owner-wri-mathgroup at wolfram.com
Robert, Look up Take in Help. list = {a, b, c, d, e, f, g, h, i, j}; Take[list, {3, Length[list], 2}] {c, e, g, i} David Park djmp at earthlink.net http://home.earthlink.net/~djmp/ > From: Robert Schuerhuber [mailto:robert.schuerhuber at gmx.at] To: mathgroup at smc.vnet.net > > 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 > >