[SciPy-dev] ticket 464

Matthieu Brucher matthieu.brucher@gmail....
Thu Jul 26 09:56:30 CDT 2007


Instead of flatten(), you can use ravel() which does not copy the data if it
is not needed (perhaps squeeze() is a good candidate too ?)

Matthieu

2007/7/26, dmitrey <openopt@ukr.net>:
>
> also, I think rank is better to be replaced by x.ndim
> Am I right?
> Regards, D.
>
>
> dmitrey wrote:
> > hi all,
> > Nils proposed me to fix the ticket 464
> > http://projects.scipy.org/scipy/scipy/ticket/464
> >
> > I found the problem is here:
> >
> >     rank = len(x0.shape)# So matrix(0.3) yields shape (1,1) here => rank
> = 2
> >     if not -1 < rank < 2:
> >         raise ValueError, "Initial guess must be a scalar or rank-1
> > sequence."
> >
> > I propose to fix it in the way:
> >
> >     rank = len(x.shape)
> >     if not -1 < rank < 2:
> >         if x.shape == (1,1): x = x.flatten()#matrix(0.3) for example
> >         else: raise ValueError, "Initial guess must be a scalar or
> > rank-1 sequence."
> >
> > If you don't mind (no other opinions during several hours) I will commit
> > the change to svn.
> > I found the same change should be done for optimize.fmin
> > Regards, D.
> >
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> >
> >
> >
> >
>
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