ade4 (version 1.01)

scatter.coa: 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

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")
par(mfrow = c(1,1))