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[Octave-bug-tracker] [bug #46737] condest function returns incorrect res
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From: |
Marco Caliari |
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Subject: |
[Octave-bug-tracker] [bug #46737] condest function returns incorrect result for singular matrix |
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Date: |
Mon, 21 Dec 2015 16:01:21 +0000 |
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User-agent: |
Mozilla/5.0 (X11; Ubuntu; Linux x86_64; rv:43.0) Gecko/20100101 Firefox/43.0 |
Follow-up Comment #1, bug #46737 (project octave):
Here the problem is the solution of singular systems (try simply C\ones(3,1)
for e=0). In Octave you get the least square solution, in Matlab you get the
inf. Once U is computed, we should check
whether it is singular
if (any (diag (U) == 0))
est = Inf;
return
endif
Not clear how the second output argument is computed in Matlab in this case.
Marco
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