[Numpy-discussion] trivial question?

Neal Becker ndbecker2@gmail....
Thu Jun 21 07:15:15 CDT 2012


Robert Kern wrote:

> On Wed, Jun 20, 2012 at 3:58 PM, Neal Becker <ndbecker2@gmail.com> wrote:
>> Maybe I'm being slow, but is there any convenient function to calculate,
>> for 2 vectors:
>>
>> \sum_i \sum_j x_i y_j
>>
>> (I had a matrix once, but it vanished without a trace)
> 
> np.multiply.outer(x, y).sum()
> 

I guess that's the same as

np.outer (x, y).sum()

?



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