Numeric array equivalent of index ?
Robert Kern
robert.kern at gmail.com
Fri Oct 14 21:29:59 EDT 2005
Nicolas Pernetty wrote:
> Hello,
>
> I'm trying to find a clear and fast equivalent to the index method of
> plain python list :
>
>>>a = [5,1,4,3,4]
>>>a.index(4)
>
> 2
>
> I have to use it on a Numeric array, so the best I've come up with is
> (rather ugly I think) :
>
>>>from Numeric import array, equal, nonzero
>>>a = array([5,1,4,3,4])
>>>nonzero(equal(a,4))[0]
>
> 2
>
> Does someone know of a more Pythonic way ?
There's a list for Numeric. You'll get better answers there.
http://numeric.scipy.org/
And no, no one has bothered adding a .index() equivalent for general,
unsorted arrays.
--
Robert Kern
rkern at ucsd.edu
"In the fields of hell where the grass grows high
Are the graves of dreams allowed to die."
-- Richard Harter
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