On Thu, 25 Jan 2007 16:06:23 -0200 "Paulo J. S. Silva" <[EMAIL PROTECTED]> wrote: > Hello, > > I am trying to write some unit tests to my new >"Automatic matrix" code > and I think I bumped into a bug in >scipy.linalg.lu_factor. If you give a > matrix to it, it doesn't honor the overwrite_a option: > > In [1]:import numpy as num > > In [2]:M = num.mat(num.random.rand(2,2)) > > In [3]:print M > [[ 0.33267781 0.2100424 ] > [ 0.61852696 0.32244386]] > > In [4]:import scipy.linalg as la > > In [5]:LU, P = la.lu_factor(M, overwrite_a=0); print M > [[ 0.33267781 0.63136882] > [ 0.61852696 -0.06807478]] > > In [6]:LU, P = la.lu_factor(M, overwrite_a=0); print M > [[ 0.63136882 0.52691517] > [-0.06807478 0.6543966 ]] > > As you can see the matrix is changed by calling the >function. > > can anyone confirm this? I am running numpy 1.0.1 and >scipy 0.5.2. > > Best, > > Paulo > Hi Paulo,
I can confirm this bug. 1.0.2.dev3511 0.5.3.dev2560 Nils > _______________________________________________ > Numpy-discussion mailing list > Numpy-discussion@scipy.org > http://projects.scipy.org/mailman/listinfo/numpy-discussion _______________________________________________ Numpy-discussion mailing list Numpy-discussion@scipy.org http://projects.scipy.org/mailman/listinfo/numpy-discussion
