MATLAB: Divide rows of A by first entry of row

Question

I am trying to divide each row of my matrix by its first row entry (to normalize the row).

I can do this for a single row (e.g. row 15 of 2D matrix 'sums'):

sums(15,1:end) ./ sums(15,1)

But this doesn't work:

sums(:,1:end) ./ sums(:,1);

Is there a way to do this in matrix notation, i.e., w/out looping?

Answer 1

A_norm = bsxfun(@rdivide,A,A(:,1))