[Numpy-discussion] Fastest distance matrix calc

Robert Kern robert.kern@gmail....
Tue Apr 17 11:08:10 CDT 2007

Christopher Barker wrote:
> Matthieu Brucher wrote:
>>     you can probably use numpy.hypot(v-y) to speed this up more...
>> Tried it today, hypot takes two arguments :(
>> Is there a function that does the square root of the sum of squares ?
> then maybe you want:
> numpy.hypot(v-y,v-y), though you should probably make a temporary v-y, 
> so you dont' make two of them.
> I've been assuming that hypot is written in C, rather than just a 
> convenience function, but it it's the later, then it won't help here.

It is written in C, but it doesn't do what you want.

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

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