[Numpy-discussion] Re: Bypassing a[2].item()?
Ryan Gutenkunst
rng7 at cornell.edu
Thu Apr 20 15:21:11 CDT 2006
On Apr 20, 2006, at 5:18 PM, Robert Kern wrote:
> Ryan Gutenkunst wrote:
>
>> So questions:
>> 1) I haven't followed the details of the array scalar discussions. Is
>> it
>> anticipated that array scalar arithmetic will eventually be as fast as
>> arithmetic in native python types?
>
> More or less, if I'm not mistaken. This ticket is aimed at that:
>
> http://projects.scipy.org/scipy/numpy/ticket/55
Good to hear.
>> 2) If not, is it possible to get a "pure" scalar directly from an
>> array
>> in one function call?
>
> float(x[0]) seems to be faster on my PowerBook.
It's faster for me, too, but float(x[0]) is still much slower than
using Numeric where x[0] suffices. I guess I'll just have to warn my
users away from the new scipy until numpy 0.9.8 comes out and scalar
math is sped up.
Cheers,
Ryan
--
Ryan Gutenkunst |
Cornell Dept. of Physics | "It is not the mountain
| we conquer but ourselves."
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http://www.physics.cornell.edu/~rgutenkunst/
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