Re: Table of tables
- To: mathgroup at smc.vnet.net
- Subject: [mg113287] Re: Table of tables
- From: Bill Rowe <readnews at sbcglobal.net>
- Date: Fri, 22 Oct 2010 01:35:27 -0400 (EDT)
On 10/21/10 at 7:01 AM, luiz.melo at polymtl.ca (Luiz Melo) wrote:
>I'm actually looking for a function that operates only on the third
>row of each column-matrix terms(which happen to be complex in the
>example I gave), but leaves the other terms intact. Consider a
>different example:
>Let t = {{{-1, -1, -2}, {-1, -1, -3}}, {{-1, -1, -4}, {-1, -1,
>-5}}};
>how can I get
>{{{-1, -1, 2}, {-1, -1, 3}}, {{-1, -1, 4}, {-1, -1, 5}}};
>that is, in this case, I need a function that takes the Abs[] of the
>3rd row of each sub-matrix and leaves the other terms intact.
t/.{a__,b_?NumericQ}->{a,Abs[b]}
Will do the trick