pcaMethods: plotPcs – R documentation

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plotPcs

Plot many side by side scores XOR loadings plots

A function that can be used to visualise many PCs plotted against each other

plotPcs(object, pcs = 1:nP(object), type = c("scores", "loadings"),
  sl = NULL, hotelling = 0.95, ...)

`object`	`pcaRes` a pcaRes object
`pcs`	`numeric` which pcs to plot
`type`	`character` Either "scores" or "loadings" for scores or loadings plot respectively
`sl`	`character` Text labels to plot instead of a point, if NULL points are plotted instead of text
`hotelling`	`numeric` Significance level for the confidence ellipse. NULL means that no ellipse is drawn.
`...`	Further arguments to `pairs` on which this function is based.

Uses pairs to provide side-by-side plots. Note that this function only plots scores or loadings but not both in the same plot.

None, used for side effect.

Henning Redestig

data(iris)
pcIr <- pca(iris[,1:4], nPcs=3,  method="svd")
plotPcs(pcIr, col=as.integer(iris[,4]) + 1)

A collection of PCA methods

v1.82.0

GPL (>= 3)

Authors

Wolfram Stacklies, Henning Redestig, Kevin Wright

Initial release