Adding new column to a matrix with the same number repeated

Hi

I have a feeling this is really simple to do, because it seems that way in my mind, but for the life of me I can't figure out how to do it.

I have a 469x1 matrix (interNode) and I want to make a second column with all rows having the same value (2) to give me a 469x2 matrix.

Any help would be appreciated :)

Answer 1

[KSSV]

interNode = rand(469,1) ;  % a radnom data
c2 = 2*ones(size(interNode)) ;  % second column to add 
iwant = [interNode c2] ;

[Meghan]

Thank you :) very simple but I just couldn't think of it! Must be Monday mornings!

Answer 2

[Preethi]

hi,

hope this helps

a= [1;2;3;4;2;3;2;6;7;2]
a(:,2)=zeros(length(a),1);
a(find(a(:,1)==2)+length(a(:,1)))=2

Answer 3

[Elias Gule]

Hi, let's try this:

[nRows,nCols] = size(yourMatrix);
yourMatrix = [yourMatrix 2*ones(nRows,1)];  % This is called matrix horizontal concatenation.