Adding one matrix with another matrix in MATLAB [duplicate]

Question

I am trying to add a matrix with another matrix in MATLAB.

The first matrix looks like this:

0.0963928845397177  1.30250820960714
-0.830468497619261  1.40991150001902
-0.352252185662263  -1.66254297035808
-0.174775039544099  1.94368447839214
-0.480653419481013  -1.08469845223762
0.836836711417678   0.226818975021420
2.53834934138902    1.09892920248474
-1.32333425148040   0.147188752472257
0.128340263343307   2.29566581301284
-1.44237915336114   2.75255787759549

Second matrix looks like this:

[1 2]

I want to add the second matrix with the first matrix => meaning 0.0963928845397177+1 and 1.30250820960714+2. I want to add 1 to first column and 2 to second column.

What i have tried:

secondmatrix .+ firstmatrix

But it is not working..

Need some guidance..

Answer 1

Probably best to avoid repmat if you can for efficiency purposes if you're going to use this with large matrices. Similarly with the [A(:,1)+b(1) A(:,2)+b(2)] approach. I'm a fan of bsxfun:

bsxfun(@plus, A, b)

Answer 2

You can do either;

A = ones(5,2)
B=[1,2]
C = A+repmat(B,size(A,1),1)

or

C = [A(:,1)+B(1,1) A(:,2)+B(1,2)]