Extracting submatrices with an existing list of indices
Subject: Extracting submatrices with an existing list of indices
From: Robert Dodier
Date: Fri, 26 Dec 2008 08:57:01 -0700
On 12/26/08, ferriste at libero.it <ferriste at libero.it> wrote:
> j[1] : 2;
> j[2] : 5;
>
> so there are two columns to delete, the
> 2nd and the 5th.
listarray(a) => list of elements of the undeclared array a
so in this case try:
apply (submatrix, cons (M, listarray (j)));
(apply(foo, ...) is a way to call foo with a constructed list of arguments.)
Hope this helps,
Robert Dodier