scatter.coa {ade4}R Documentation

Plot of the factorial maps for a correspondence analysis

Description

performs the scatter diagrams of a correspondence analysis.

Usage

scatter.coa(x, xax = 1, yax = 2, method = 1:3, clab.row = 0.75, 
    clab.col = 1.25, posieig = "top", sub = NULL, csub = 2, ...)

Arguments

x an object of class coa
xax the column number for the x-axis
yax the column number for the y-axis
method an integer between 1 and 3
1 Rows and columns with the coordinates of lambda variance
2 Rows variance 1 and columns by averaging
3 Columns variance 1 and rows by averaging
clab.row a character size for the rows
clab.col a character size for the columns
posieig if "top" the eigenvalues bar plot is upside,vif "bottom" it is downside, if "none" no plot
sub a string of characters to be inserted as legend
csub a character size for the legend, used with par("cex")*csub
... further arguments passed to or from other methods

Author(s)

Daniel Chessel chessel@biomserv.univ-lyon1.fr

References

Oksanen, J. (1987) Problems of joint display of species and site scores in correspondence analysis. Vegetatio, 72, 51–57.

Examples

data(housetasks)
par(mfrow = c(2,2))
w <- dudi.coa(housetasks, scan = FALSE)
scatter.dudi(w, sub = "0 / To be avoided")
scatter.coa(w, method = 1, sub = "1 / Standard", posieig = "none")
scatter.coa(w, method = 2, 
    sub = "2 / Columns -> averaging -> Rows", posieig = "none")
scatter.coa(w, method = 3, 
    sub = "3 / Rows -> averaging -> Columns ", posieig = "none")

[Package ade4 version 1.4-0 Index]