Create a density in 2-dimensions

Usage

density2D(
  bp,
  which = NULL,
  contours = F,
  h = NULL,
  n = 100,
  col = c("green", "yellow", "red"),
  contour.col = "black",
  cuts = 50,
  cex = 0.6,
  tcl = -0.2,
  mgp = c(0, -0.25, 0),
  layout.heights = c(100, 10),
  legend.mar = c(2, 5, 0, 5)
)

Arguments

bp: object of class biplot
which: which group to create a density; limited to only a single group at a time. If NULL, density drawn over all data points.
contours: logical indicating whether contours are added to the density plot
h: vector of bandwidths for x and y directions, see kde2d.
n: number of grid points in each direction. Can be scalar or a length-2 integer vector.
col: vector of colours to use to form a 'continuous' sequence of colours.
contour.col: colour of the contours.
cuts: number of colours in col.
cex: character expansion.
tcl: The length of tick marks as a fraction of the height of a line of text.
mgp: The margin line.
layout.heights: A vector of values for the heights of rows.
legend.mar: The margin line of the legend.

Value

An object of class biplot.

Examples

biplot(iris[,1:4],group.aes = iris[,5]) |> PCA() |> 
  density2D(which=3,col=c("white","purple","cyan","blue")) |> plot()

biplot(iris[,1:4],group.aes = iris[,5]) |> PCA() |> 
  density2D(which=3,col=c("white","purple","cyan","blue"),contours = TRUE,
  contour.col = "grey") |> plot()