R: Scatter Plot with Kernel Density Estimate

s.kde2d {ade4}

R Documentation

Scatter Plot with Kernel Density Estimate

Description

performs a scatter of points without labels by a kernel Density Estimation in One or Two Dimensions

Usage

s.kde2d(dfxy, xax = 1, yax = 2, pch = 20, cpoint = 1, neig = NULL, cneig = 2, 
    xlim = NULL, ylim = NULL, grid = TRUE, addaxes = TRUE, cgrid = 1, 
    include.origin = TRUE, origin = c(0, 0), sub = "", csub = 1.25, 
    possub = "bottomleft", pixmap = NULL, contour = NULL, 
    area = NULL, add.plot = FALSE)

Arguments

`dfxy`	a data frame with at least two coordinates
`xax`	the column number for the x-axis
`yax`	the column number for the y-axis
`pch`	if `cpoint` > 0, an integer specifying the symbol or the single character to be used in plotting points
`cpoint`	a character size for plotting the points, used with `par("cex")*cpoint`. If zero, no points are drawn
`neig`	a neighbouring graph
`cneig`	a size for the neighbouring graph lines used with par("lwd")*`cneig`
`xlim`	the ranges to be encompassed by the x axis, if NULL, they are computed
`ylim`	the ranges to be encompassed by the y axis, if NULL, they are computed
`grid`	a logical value indicating whether a grid in the background of the plot should be drawn
`addaxes`	a logical value indicating whether the axes should be plotted
`cgrid`	a character size, parameter used with par("cex")* 'cgrid' to indicate the mesh of the grid
`include.origin`	a logical value indicating whether the point "origin" should be belonged to the graph space
`origin`	the fixed point in the graph space, for example c(0,0) the origin axes
`sub`	a string of characters to be inserted as legend
`csub`	a character size for the legend, used with `par("cex")*csub`
`possub`	a string of characters indicating the sub-title position ("topleft", "topright", "bottomleft", "bottomright")
`pixmap`	an object `pixmap` displayed in the map background
`contour`	a data frame with 4 columns to plot the contour of the map : each row gives a segment (x1,y1,x2,y2)
`area`	a data frame of class 'area' to plot a set of surface units in contour
`add.plot`	if TRUE uses the current graphics window

Value

The matched call.

Author(s)

Daniel Chessel

Examples

# To recognize groups of points
if(!adegraphicsLoaded()) {
  data(casitas)
  casitas.fuz <- fuzzygenet(casitas)
  casitas.pop <- as.factor(rep(c("dome", "cast", "musc", "casi"), c(24, 11, 9, 30)))
  casitas.pca <- dudi.pca(casitas.fuz, scannf = FALSE, scale = FALSE)
  if(requireNamespace("MASS", quiet = TRUE)) {
    s.kde2d(casitas.pca$li)
    s.class(casitas.pca$li, casitas.pop, cell = 0, add.p = TRUE)
  }
}

[Package ade4 version 1.7-4 Index]