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[Octave-bug-tracker] [bug #46912] qr not working as described


From: Marco Caliari
Subject: [Octave-bug-tracker] [bug #46912] qr not working as described
Date: Mon, 18 Jan 2016 10:27:37 +0000
User-agent: Mozilla/5.0 (X11; Ubuntu; Linux x86_64; rv:43.0) Gecko/20100101 Firefox/43.0

Follow-up Comment #2, bug #46912 (project octave):

Looking at the code, I now understand that it is just a problem in the
description. In fact, qr(A,B) and qr(A,B,'0') are valid only for a sparse
matrix A. This should be more clear in the help and informative errors
messages should be given otherwise.
Then, I see that [Q,R,P] = qr(A,anything), for a full matrix A, gives P as a
vector. This is not compatible with qr(A,'matrix') in Matlab.

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