[Octave-bug-tracker] [bug #66488] qr( sparse, 0) isn't equal to qr( sparse, 'econ', 'vector')

[Markus Mützel]

Follow-up Comment #8, bug #66488 (group octave):

With Matlab R2024b:

>> [q,r,p] = qr(speye(3),'econ')

q =

  3×3 sparse double matrix (3 nonzeros)

   (1,1)        1
   (2,2)        1
   (3,3)        1


r =

  3×3 sparse double matrix (3 nonzeros)

   (1,1)        1
   (2,2)        1
   (3,3)        1


p =

  3×3 sparse double matrix (3 nonzeros)

   (1,1)        1
   (2,2)        1
   (3,3)        1

>> [q,r,p] = qr(eye(3),'econ')

q =

     1     0     0
     0     1     0
     0     0     1


r =

     1     0     0
     0     1     0
     0     0     1


p =

     1     0     0
     0     1     0
     0     0     1

>> 




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