MATLAB Answers

insert zero column in a m×n matrix ?

369 views (last 30 days)
Rakesh Praveen
Rakesh Praveen on 2 Nov 2011
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.


Sign in to comment.

Accepted Answer

Sven on 2 Nov 2011
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);

More Answers (0)


Community Treasure Hunt

Find the treasures in MATLAB Central and discover how the community can help you!

Start Hunting!