scores function

Extract Scores and Loadings from PLSR and PCR Models

These functions extract score and loading matrices from fitted mvr

models.

loadings(object, ...)

## Default S3 method:
loadings(object, ...)

scores(object, ...)

## Default S3 method:
scores(object, ...)

Yscores(object)

loading.weights(object)

Yloadings(object)

Arguments

• object: a fitted model to extract from.
• ...: extra arguments, currently not used.

Returns

A matrix with scores or loadings.

Details

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.)

Note

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(...).

Examples

data(yarn)
plsmod <- plsr(density ~ NIR, 6, data = yarn)
scores(plsmod)
loadings(plsmod)[,1:4]

See Also

mvr, coef.mvr

Author(s)

Ron Wehrens and Bjørn-Helge Mevik