s.kde2d: Scatter Plot with Kernel Density Estimate

In ade4: Analysis of Ecological Data: Exploratory and Euclidean Methods in Environmental Sciences

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(rpjdl)
  coa1 <- dudi.coa(rpjdl$fau, scannf = FALSE, nf = 3)
  s.kde2d(coa1$li)
}

ade4 documentation built on Feb. 16, 2023, 7:58 p.m.