I am using the latest versions of numpy (from numpy-1.7.0b2-win32-superpack-python2.7.exe) and scipy (from scipy-0.11.0-win32-superpack-python2.7.exe ) on a windows 7 (32-bit) platform.
I have used import numpy as np q,r = np.linalg.qr(A) and compared the results obtained from MATLAB (R2010B) [q,r] = qr(A) The q,r returned from numpy are both the negative of theq,r returned from MATLAB for the same matrix A. I believe that the q,r returned from MATLAB are correct. Why am I getting their negative from numpy? Note, I have tried this on several different matrices --- numpy always gives the negative of MATLAB's q,r values. [I mistakenly have already sent a similar email to the scipy list --- please excuse this mistake.] _______________________________________________ NumPy-Discussion mailing list [email protected] http://mail.scipy.org/mailman/listinfo/numpy-discussion
