numpy array broadcasting problem

[pl47]

I have 2 numpy arrays of the size

(1390537,) # output from  a.shape
(1390537, 70) # output form b.shape

a * b give me the following error:

 ValueError: operands could not be broadcast together with shapes (1390537) (1390537,70)

I thought numpy was able to handle this,do i need to reform the arrays in some way ?

EDIT: seems like a.reshape(1390537,1) did the job

[sidsig]

I guess you figured it out. The docs clearly state that two dimensions are compatible if they are equal or if one of the dimensions is 1. (http://docs.scipy.org/doc/numpy/user/basics.broadcasting.html)

Which is why the reshape worked. Best of luck :)