inserting vectors into a matrix

Hi,

I am wondering of there is a way that enables me to insert a column vector in a matrix (similar to insert column in excel) without replacing any existing column. For example I have Matrix "A" which is 4x4 and I want to insert a vector "B" to be the first column of "A" in order to obtain "A" 4x5 where the 1st column of "A" is vector "B"

[SHRI KRISHN]

C = [A,B];

Answer 1

[Jan]

And to insert a column in the middle part:

A = rand(4, 4);
B = rand(4, 1);
C(:, [1,2,5,3,4]) = [A, B];

Not nice, but it works. Alternatively:

C = [A(:, 1:2), B, A(:, 3:4)];

[M.Basil Alazawi]

this is to column C = [A(:, 1:2), B, A(:, 3:4)];in the case the row how method or what is change in it

Answer 2

[Honglei Chen]

If your B is a 4x1 column vector, you can simply do

A = [B A]