On 10/18/07, Robert Kern <[EMAIL PROTECTED]> wrote: > Geoffrey Zhu wrote: > > Hi All, > > > > Given three vectors of the same lengths, X, Y, and Z, I am looking for > > an efficient way to calculate the following: > > > > sum(x[i]*y[i]*z[i], for i=1..n ) > > (x*y*z).sum() > > -- > Robert Kern > > "I have come to believe that the whole world is an enigma, a harmless enigma > that is made terrible by our own mad attempt to interpret it as though it had > an underlying truth." > -- Umberto Eco > _______________________________________________ > Numpy-discussion mailing list > [email protected] > http://projects.scipy.org/mailman/listinfo/numpy-discussion >
Thanks Robert. (x*y*z).sum() is probably faster than sum(x*y*z). _______________________________________________ Numpy-discussion mailing list [email protected] http://projects.scipy.org/mailman/listinfo/numpy-discussion
