Re: Help with matrix replication

[Bård Skaflestad]

On Thu, 2012-12-20 at 16:50 +0000, Richardson, Anthony wrote:
> I want to duplicate the rows in a matrix n times and then duplicate
> the columns n times.

Here is one simple way,

    ix = @(sz, n) cumsum (mod (1 : n*sz, n) == 1);

    a = [ 1, 2, 3 ; 4, 5, 6 ];
    n = 2;

    i = ix (size (a, 1), n);
    j = ix (size (a, 2), n);

    b = a (i, j);

It uses quite a bit of memory, though.


Sincerely,
-- 
Bård Skaflestad <address@hidden>