[Numpy-discussion] scipy.stats.poisson.ppf raises "OverflowError: cannot convert float infinity to long"

josef.pktd@gmai... josef.pktd@gmai...
Tue Aug 4 19:00:28 CDT 2009


On Tue, Aug 4, 2009 at 7:03 PM, Maria Liukis<liukis@usc.edu> wrote:
> Josef,
> Thanks a bunch!
> Masha

You're welcome.
Josef

> --------------------
> liukis@usc.edu
>
>
> On Aug 4, 2009, at 4:01 PM, josef.pktd@gmail.com wrote:
>
> On Tue, Aug 4, 2009 at 6:36 PM, Maria Liukis<liukis@usc.edu> wrote:
>
> Hello everybody,
> I'm using the following versions of scipy and numpy:
>
> scipy.__version__
>
> '0.6.0'
>
> import numpy
> numpy.__version__
>
> '1.1.1'
> Would anybody happen to know why I get an exception when calling
> scipy.stats.poisson.ppf function:
>
> from scipy.stats import *
> poisson.ppf(0.9999, 4)
>
> Traceback (most recent call last):
>   File "<stdin>", line 1, in <module>
>   File "/usr/lib64/python2.5/site-packages/scipy/stats/distributions.py",
> line 3601, in ppf
>     place(output,cond2,self.b)
>   File "/usr/lib64/python2.5/site-packages/numpy/lib/function_base.py", line
> 957, in place
>     return _insert(arr, mask, vals)
> OverflowError: cannot convert float infinity to long
>
> stats.poisson.ppf(0.9999, 4)
>
> 13.0
>
> stats.poisson.cdf(13, 4)
>
> 0.99992367158465667
> should be fixed since scipy 0.7.0
> Josef
>
> Thanks a lot in advance,
> Masha
> --------------------
> liukis@usc.edu
>
>
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