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Re: Table of tables


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



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