Comments (1)
fommil
commented on July 26, 2024
From [email protected] on April 14, 2009 17:41:19
Hi,
Indeed there is a documentation typo.
From the test file QRPtest.java in method testPivotingMatrix the following relation
is assured:
A = (Q*R) * P
So the correct relation should be:
A = QRP or AP^-1 = QR
Actually we have 2 methods for retrieving the P matrix. The preferred method is
getPVector() which returns a permutation vector and not a matrix (this vector comes
directly from lapack). The getP() method, is supplied just for convenience, and I'll
have to check if they are in sync each other.
Regards.
from matrix-toolkits-java.
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