Question

I have a matrix

a = [1 2 3 4 5 6 7 8 9 10 11]

I need to split it into rows of 5 and fill the rest of the unset block with zeros like this:

transformed = [ 1  2  3  4  5 ;
                6  7  8  9  10;
                11 0  0  0  0 ]

Answer 1

You could first expand a to have the required number of elements like this;

a(15) = 0 % Matlab will automatically fill elements 12:14 with 0

then

transformed = reshape(a,[5,3])'

produces

ans =

     1     2     3     4     5
     6     7     8     9    10
    11     0     0     0     0