MATLAB: Add a column between tow columns

Question

Hi,

I am newbie with matlab. I have a matrix like:

a = [ 2 5 7 ; 3 6 8]

I would like to add new column between column 1 and 2, So I will have:

a = [2 1 5 7; 3 4 6 8]

Let me ask it more general, I want to add a column between any two columns.

Thanks

Answer 1

Given the array A and the column vector x, let n be the column after which you want to add x into A:

ncol = size(A,2);
cat(2,A(:,1:n),x,A(:,min(n+1,ncol):end))