numpy.where

Robert Kern robert.kern at gmail.com
Fri Apr 10 09:39:46 CEST 2009


On 2009-04-09 22:40, Peter Pearson wrote:
> On Thu, 09 Apr 2009 09:09:18 -0400, Lou Pecora wrote:
>> Thanks, Neil.  Always something to learn.  I've used Numpy for several
>> years, but still have not plumbed the depths.  Just tried this script
>> and, yep, it works.
>>
>>        arr=array([-1,1.0,2.2,-10.0,1.1, 0.9,-0.9])
>>        cond= arr<  1.0
>>        print cond
>>        brr=arr[cond]
>>        print brr
>>
>> Output:
>>
>> [ True False False  True False  True  True]
>> [ -1.  -10.    0.9  -0.9]
>>
>> Really,  I've gotta RTFM. :-)
>
> Hey, if you find TFM, please tell me where it is.  I haven't
> found anything Fine.  I even bought Travis Oliphant's book,
> which helps a little, but . . .

http://docs.scipy.org/doc/numpy/reference/arrays.indexing.html

-- 
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




More information about the Python-list mailing list