Extract Scores and Loadings from PLSR and PCR Models
These functions extract score and loading matrices from fitted
mvr models.
scores(object, ...) ## Default S3 method: scores(object, ...) loadings(object, ...) ## Default S3 method: loadings(object, ...) loading.weights(object) Yscores(object) Yloadings(object)
object |
a fitted model to extract from. |
... |
extra arguments, currently not used. |
All functions extract the indicated matrix from the fitted model, and will work with any object having a suitably named component.
The default scores and loadings methods also handle
prcomp objects (their scores and loadings components are called
x and rotation, resp.), and add an attribute
"explvar" with the variance explained by each component, if
this is available. (See explvar for details.)
A matrix with scores or loadings.
There is a loadings function in package stats. It simply
returns any element named "loadings". See
loadings for details. The function can be
accessed as stats::loadings(...).
Ron Wehrens and Bjørn-Helge Mevik
data(yarn) plsmod <- plsr(density ~ NIR, 6, data = yarn) scores(plsmod) loadings(plsmod)[,1:4]
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