expVar: S3 function expVar to extract explained variance from prcomp...

In bedapub/ribiosPlot: Plotting module of ribios for visualization

S3 function expVar to extract explained variance from prcomp and PCAScoreMatrix objects

Description

S3 function expVar to extract explained variance from prcomp and PCAScoreMatrix objects

Usage

expVar(x, choices)

## S3 method for class 'prcomp'
expVar(x, choices)

## S3 method for class 'PCAScoreMatrix'
expVar(x, choices)

Arguments

x	A prcomp or PCAScoreMatrix object.
choices	Either missing, or an integer vector of indices, indicating which PCs should be returned.

Value

A numeric vector of variance explained

Methods (by class)

• expVar(prcomp): Extract explained variance from a prcomp object

• expVar(PCAScoreMatrix): Extract explained variance from a PCAScoreMatrix object

Methods (by class)

• prcomp: Extract explained variance from a prcomp object

• PCAScoreMatrix: Extract explained variance from a PCAScoreMatrix object

Examples

myMat <- matrix(rnorm(100), ncol=10)
myPrcomp <- prcomp(myMat)
myPcaScoreMatrix <- pcaScores(myPrcomp, choices=NULL) 
expVar(myPrcomp)
expVar(myPcaScoreMatrix)

expVar(myPrcomp, 1:5)
expVar(myPcaScoreMatrix, 1:5)

bedapub/ribiosPlot documentation built on Sept. 1, 2023, 6:50 p.m.