horzcat (Matlab function) Horizontal concatenation

## Matlab/Scilab equivalent

Matlab | Scilab |
    horzcat(A, B,..)
    cat(2, A, B,..)
    [A, B, ..]
    m = [1:4 ; 5:8; 9:12]'
    cat(2, m, m)
    [m ; m]

    h = matrix(m,2,3,2)
    cat(2, h, h)
    [h ; h]