Vector subtraction from matrix

Let A be a 3 by 5 matrix:

    A=rand(3,5);
    v=1:5;

How can I add v to each row of A without using a for loop, to improve efficiency?

Answer 1

[Star Strider]

If I understand correctly what you want to do, use the bsxfun function:

A=rand(3,5)
v=1:5;
B = bsxfun(@plus, A, v)

A =
      0.27247      0.60307      0.30892      0.93688     0.043818
      0.77582      0.18401      0.23088     0.031879       0.4249
      0.33141     0.087459      0.90919      0.59365      0.52158

B =
       1.2725       2.6031       3.3089       4.9369       5.0438
       1.7758        2.184       3.2309       4.0319       5.4249
       1.3314       2.0875       3.9092       4.5936       5.5216