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

> 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
>
>

```

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