numpy.random.ranomd_integers returning only negative numbers ?

Robert Kern robert.kern at gmail.com
Wed Nov 1 23:42:06 CST 2006


Keith Goodman wrote:
> On 11/1/06, David Cournapeau <david at ar.media.kyoto-u.ac.jp> wrote:
>> Hi,
>>
>>     I want to generate some random integers,let's say in the range [-
>> 2^15, 2^16]. Why doing:
>>
>>     noise = numpy.random.random_integers(- (2 ** 15), (2 * 15), 22050)
>>
>>     gives only negative numbers ?
> 
> I guess 2^15 is too big to be an int.

No, it isn't. As Fernando pointed out, if David's code is what he typed here, 
then his upper bound is (2 * 15) == 30 not (2 ** 15) == 32768 as he intended 
intended.

-- 
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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