I want to divid a column array b (N x 1) by each column in a big sparse matrix A (N x M). My code is as follows:
dividCol = zeros(N,M);
for i = 1 : M
nonCol = find(abs(A(:,i))>0);
dividCol(nonCol,i) = b(nonCol)./A(nonCol,i);
But it is very slow. I do know if there exist a faster approach to write this code.
Thanks a lot in advance.