[Numpy-discussion] performance issue (again)

Mathew Yeates myeates@jpl.nasa....
Wed Apr 22 10:48:36 CDT 2009


well, this isn't a perfect solution. polyfit  is better because it 
determines rank based on condition values. Finds the eigenvalues ... 
etc. But, unless it can vectorized without Python looping, it's too slow 
for me to use

Mathew

josef.pktd@gmail.com wrote:
>
>
>
>     If you remove the mean from x and y (along axis = 1) then can't you
>     just do something like
>
>     (x*y).sum(1) / (x*x).sum(axis=1)
>
>
>
> I think that's what I said 8 days ago.
>
> Josef
>



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