[Numpy-discussion] LU factorization?

Robert Kern robert.kern@gmail....
Wed Oct 15 15:04:47 CDT 2008

On Wed, Oct 15, 2008 at 14:49, Charles R Harris
<charlesr.harris@gmail.com> wrote:
> On Wed, Oct 15, 2008 at 1:06 PM, Robert Kern <robert.kern@gmail.com> wrote:
>> On Wed, Oct 15, 2008 at 00:23, Charles R Harris
>> <charlesr.harris@gmail.com> wrote:
>> > Hi All,
>> >
>> > numpy.linalg has qr and cholesky factorizations, but LU factorization is
>> > only available in scipy. That doesn't seem quite right. I think is would
>> > make sense to include the LU factorization in numpy among the basic
>> > linalg
>> > operations, and probably LU_solve also. Thoughts?
>> -1. As far as I am concerned, numpy.linalg exists because Numeric had
>> LinearAlgebra, and we had to provide it to allow people to upgrade. I
>> do not want to see an expansion of functionality to maintain.
> I would be happier with that argument if scipy was broken into separately
> downloadable modules and released on a regular schedule.

Then that is the deficiency that we should spend time on, not
duplicating the functionality again.

Robert Kern

"I have come to believe that the whole world is an enigma, a harmless
enigma that is made terrible by our own mad attempt to interpret it as
though it had an underlying truth."
  -- Umberto Eco

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