MathGroup Archive 1999

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Re: list of lists

  • To: mathgroup at
  • Subject: [mg15494] Re: list of lists
  • From: "Donald E. Niman <>" <Donald at>
  • Date: Mon, 18 Jan 1999 04:22:37 -0500
  • Organization: Consultant
  • References: <77jkin$>
  • Sender: owner-wri-mathgroup at

In a dream I recall that on 13 Jan 1999 21:25:27 -0500, in article
<77jkin$2v6 at>, "wgrebe" blurted out thus...
>I have a 2-dimensional list, which is very large. It consists of 1024
>sublists, each with 11 elements.
>I want to have a smaller list, where every 5th sublist is element. What
>can I do?
>Thank you
>                                                Witold
>wgrebe at

This statement creates a list to test with:


This extracts every fifth element starting at the fifth element:


I hope this is the solution you are looking for.

Donald E. Niman
Peoria Arizona or Rancho Cucamonga California My opinions today do not
necessarily reflect my earlier opinions.

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