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 Contents]