[SciPy-user] Bugs in special

Eli Brosh ebrosh@nana.co...
Mon Apr 2 07:05:48 CDT 2007


Thank you Nils
I looked at the tickets 
http://projects.scipy.org/scipy/scipy/ticket/301 <http://projects.scipy.org/scipy/scipy/ticket/301> 

http://projects.scipy.org/scipy/scipy/ticket/387 <http://projects.scipy.org/scipy/scipy/ticket/387> 

It seems that inded, there are some serious bugs in  Bessel and Kelvin functions in 'special' package.
However, the bugs reported in these "tickets" are not the bug I encountered. 
Perhaps they are related.
 
Eli
 
 
 

________________________________

From: scipy-user-bounces@scipy.org on behalf of Nils Wagner
Sent: Mon 02/04/2007 13:59
To: SciPy Users List
Subject: Re: [SciPy-user] Bugs in special



On Mon, 2 Apr 2007 13:03:03 +0300
  "Eli Brosh" <ebrosh@nana.co.il> wrote:
> Hello
> I am trying to convert from MATLAB to Python with SciPy.
> I am using Python 2.4.3 for Windows (Enthought Edition)
> As a start, I tried to use the special functions from
>the SciPy  "special" module.
> There, I encountered some problems that may be a result
>of bugs in SciPy.
>
>
> The session (in IDLE) goes like:
>
>>>>from scipy import *
>>>> x=.5
>>>> special.jv(0,x)
> 0.938469807241
>>>> y=.5+1.j
>>>> y
> (0.5+1j)
>>>> special.jv(0,y)
>>>> ================================ RESTART
>>>>================================
>
> When I try to put a complex argument in special.jv, I
>get an error message from the operating system (windows
>XP):
> It says "pythonw.exe has encountered a problem and needs
>to close. We are sorry for the inconvenience."
>
> The IDLE does not close but it is restarted:
> There appears a line:
>>>> ================================ RESTART
>>>>================================
>
> This does not occur when the argument of special.jv is
>real.
>
> However, even real arguments in special.ber and
>special.ker provoked the same crash and the same error
>message.
>
>
>
> Is this a bug in SciPy or am I doing something wrong ?
>
>
> Thanks
> Eli
>
See the tickets

http://projects.scipy.org/scipy/scipy/ticket/301

http://projects.scipy.org/scipy/scipy/ticket/387

Nils
 
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