Re: Any easy/build-in construct to extract submatrices from larger matrix?

["Nasser M. Abbasi" <nma@12000.org>]

On 6/26/2012 2:15 AM, Jacob Sparre Andersen wrote:

>> ---------------------------
>> Table[ReplacePart[A,{{i},{i,_},{_,j}}:>Sequence[]],{i,nRow},{j,nCol}];
>> ---------------------------
>
> I'm not sure if Mathematica has sufficient syntax highlighting to make
> it easy to keep track of the grouping of the various parentheses,

Yes it does, when using the notebook interface, using menus
one can tell it to find matching [] (I'll go crazy without this feature)

> but as it appears here,  I would definitely want to break it up a bit, to make
> it more readable.

But it is allready very readable !  ;)

> - My Mathematica so rusty that even when I do that,
> I'm still not quite certain that your function works correctly.
>

Sure it works. Please see  http://alturl.com/jh4pj

>
> Greetings,
>
> Jacob
>

--Nasser