Description Usage Arguments Value Note Author(s) See Also
[Partial] Redundancy Analysis via QR and singular value decomposition or Principal Components Analysis via singular value decomposition.
1 2 |
Y |
Dependent Data Matrix. |
X |
Model matrix of constraints (can be missing). |
Z |
Model matrix of constraints (can be missing). |
scale |
Scale dependent matrix. |
later...
Function rda
is essentially similar.
Function RDA
is a simpler basic function that only
performs Redundancy Analysis. Function pRDAalt
takes explicit
residuals of X
regressed on Z
(similarly as CANOCO for
Windows software), whereas pRDA
trusts QR decomposition to
handle the orthogonality.
Jari Oksanen
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