Re: [Numpy-discussion] identity

2009-08-12 Thread Chris Colbert
Someone posts on offtopic.com > > (1) Extend the work of others (in this case Luca Citi and Robert Kern) > (2) File a ticket > (3) ??? > (4) Profit > ___ > NumPy-Discussion mailing list > NumPy-Discussion@scipy.org > http://mail.scipy.org/mailman/listinf

Re: [Numpy-discussion] identity

2009-08-12 Thread Keith Goodman
On Wed, Aug 12, 2009 at 8:53 AM, Charles R Harris wrote: > > > On Wed, Aug 12, 2009 at 9:29 AM, Scott Sinclair > wrote: >> >> >2009/8/12 Keith Goodman : >> > On Wed, Aug 12, 2009 at 7:24 AM, Keith Goodman >> > wrote: >> >> On Wed, Aug 12, 2009 at 1:31 AM, Lars >> >> Bittrich wrote: >> >>> >> >>> a

Re: [Numpy-discussion] identity

2009-08-12 Thread Charles R Harris
On Wed, Aug 12, 2009 at 9:29 AM, Scott Sinclair wrote: > >2009/8/12 Keith Goodman : > > On Wed, Aug 12, 2009 at 7:24 AM, Keith Goodman > wrote: > >> On Wed, Aug 12, 2009 at 1:31 AM, Lars > >> Bittrich wrote: > >>> > >>> a colleague made me aware of a speed issue with numpy.identity. Since > he wa

Re: [Numpy-discussion] identity

2009-08-12 Thread Scott Sinclair
>2009/8/12 Keith Goodman : > On Wed, Aug 12, 2009 at 7:24 AM, Keith Goodman wrote: >> On Wed, Aug 12, 2009 at 1:31 AM, Lars >> Bittrich wrote: >>> >>> a colleague made me aware of a speed issue with numpy.identity. Since he was >>> using numpy.diag(numpy.ones(N)) before, he expected identity to be

Re: [Numpy-discussion] identity

2009-08-12 Thread Keith Goodman
On Wed, Aug 12, 2009 at 7:24 AM, Keith Goodman wrote: > On Wed, Aug 12, 2009 at 1:31 AM, Lars > Bittrich wrote: >> Hi, >> >> a colleague made me aware of a speed issue with numpy.identity. Since he was >> using numpy.diag(numpy.ones(N)) before, he expected identity to be at least >> as >> fast as

Re: [Numpy-discussion] identity

2009-08-12 Thread Keith Goodman
On Wed, Aug 12, 2009 at 1:31 AM, Lars Bittrich wrote: > Hi, > > a colleague made me aware of a speed issue with numpy.identity. Since he was > using numpy.diag(numpy.ones(N)) before, he expected identity to be at least as > fast as diag. But that is not the case. > > We found that there was a discu

[Numpy-discussion] identity

2009-08-12 Thread Lars Bittrich
Hi, a colleague made me aware of a speed issue with numpy.identity. Since he was using numpy.diag(numpy.ones(N)) before, he expected identity to be at least as fast as diag. But that is not the case. We found that there was a discussion on the list (July, 20th; "My identity" by Keith Goodman).