plot_pca: Plot a PCA analisys into a biplot.

In adrianmarino/commons: commons

Description

Plot a PCA analisys into a biplot.

Usage

plot_pca(
  pca_result,
  groups = NULL,
  alpha = 0.08,
  title = "",
  ellipse = TRUE,
  colours = c("green", "red"),
  labels = c("No", "Yes"),
  obs.scale = 1,
  var.scale = 1,
  varname.adjust = 1.5,
  varname.size = 3
)

Arguments

pca_result	PCA result to plot.
groups	optional factor variable indicating the groups that the observations belong to. If provided the points will be colored according to groups
alpha	alpha transparency value for the points (0 = transparent, 1 = opaque)
title	a title.
ellipse	draw a normal data ellipse for each group?
colours	groups colors.
labels	optional vector of labels for the observations
obs.scale	scale factor to apply to observations
var.scale	scale factor to apply to variables
varname.adjust	adjustment factor the placement of the variable names, >= 1 means farther from the arrow
varname.size	size of the text for variable names
scale	covariance biplot (scale = 1), form biplot (scale = 0). When scale = 1, the inner product between the variables approximates the covariance and the distance between the points approximates the Mahalanobis distance.

adrianmarino/commons documentation built on Dec. 18, 2021, 10:30 p.m.