Row Division in Scipy Sparse Matrix

Question

I want to divide a sparse matrix\'s rows by scalars given in an array.

For example, I have a csr_matrix C :

C = [[2,4,6], [5,         


        

Answer 1

If you first cast D to type numpy.matrix (which I'm assuming you can do unless D is too big to fit into memory), then you can just run

C.multiply(1.0 / D.T)

to get what you want.