insert zero column in a m×n matrix ?

hello, i want to insert a zero column in the beginning of a matrix. say for example, if i have 5×5 matrix. if i want to insert zero column in the beginning then the matrix will be 5×6 matrix, so now the first column in this matrix will be zeros. how do i do it? need some help. Thank you.

Answer 1

[Sven]

For a given matrix A:

A = rand(5,5);

Using square braces to concatenate:

A_zeros = [zeros(size(A,1),1) A];

Using the cat() command:

A_zeros = cat(2, zeros(size(A,1),1), A);

[Rakesh Praveen]

Thank you Sven.