[SciPy-user] Mean / std type conversion ?
Thu May 22 16:36:56 CDT 2008
Robert Kern wrote:
> On Thu, May 22, 2008 at 3:29 PM, Stef Mientki <firstname.lastname@example.org> wrote:
>> The following lines 1,2 don't work as I expect,
>> lines 3,4 works correctly...
>> print numpy.mean ( data, 0, dtype = int )
>> print numpy.std ( data, 0, int )
>> print numpy.mean ( data, 0 ).astype ( int )
>> print numpy.std ( data, 0 ).astype ( int )
>> Am I doing something wrong (numpy 1.0.4) ?
> Yes. 1,2 mean something entirely different than 3,4. They do not
> specify the type of the output but rather the type of the accumulator.
> This allows one to specify an accumulator type larger than the array's
> type to avoid overflow.
>> Another question,
>> isn't there a function that computes both mean and std ?
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