MATLAB: How to add elements to a sparse matrix

Question

Dear community,

I have a sparse matrix S with the dimensions 2028 rows by 14809 columns. I would like to turn S into a full matrix F with the dimensions 2028 rows by 14927 columns. This means that I would like to define a 2028×14927 matrix of zeros first and then fill it with the elements of S in the correct place.

Here is a small example: Below you can see the first 4 elements of the sparse matrix:

         (1,1)             1
         (1,2)             2
         (1,3)             2
         (1,6)             8
        ...

I would like to turn into something like this:

         (1,1)             1
         (1,2)             2
         (1,3)             2
         (1,4)             0
         (1,5)             0
         (1,6)             8
        ...

Any ideas? Thank you! Paul

Answer 1

 F=full(S)
 F=[F,zeros(2028,14927-14809)];