[Numpy-discussion] Min Error

[David Reed]

Thanks Sebastian, but still have same error. Also doesn't explain why it
works when I run the same code at the debug prompt.  Scratching my head on
this one.

Dave


On Sun, Sep 22, 2013 at 10:42 AM, Sebastian Berg <sebastian at sipsolutions.net
> wrote:

> On Sun, 2013-09-22 at 10:21 -0400, David Reed wrote:
> > Hi,
> >
> >
> > I am getting  a strange error when finding the minimum of a matrix.
> >  The weird thing is I get this while running within iPython shell, and
> > if I do %debug and go to the line where this fails and run the command
> > `a = np.min(D, axis=0)`, I get no error.
> >
> >
> > Here is the trace:
> >
> >
> > draw_lines/main.pyc in haus_distance(A, B)
> >      28         D = D.reshape((len(A), None))
> >      29
> > ---> 30         a = np.min(D, axis=0)
> >      31
> >      32         # vp = np.max(np.min(D, axis=0))
> >
>
> There is an error in the reshape code. The real error is the None in
> your reshape right above, it should be -1.
> This is not surfaced correctly due to a bug in Reshape, but instead gets
> surfaced (somewhat randomly) lateron.
>
> - Sebastian
>
> >
> > anaconda/lib/python2.7/site-packages/numpy/core/fromnumeric.pyc in
> > amin(a, axis, out, keepdims)
> >    1985     else:
> >    1986         return _methods._amin(a, axis=axis,
> > -> 1987                             out=out, keepdims=keepdims)
> >    1988
> >    1989 def alen(a):
> >
> >
> > anaconda/lib/python2.7/site-packages/numpy/core/_methods.pyc in
> > _amin(a, axis, out, keepdims)
> >      12 def _amin(a, axis=None, out=None, keepdims=False):
> >      13     return um.minimum.reduce(a, axis=axis,
> > ---> 14                             out=out, keepdims=keepdims)
> >      15
> >      16 def _sum(a, axis=None, dtype=None, out=None, keepdims=False):
> >
> >
> > TypeError: an integer is required
> >
> >
> >
> >
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>
>
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