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performs the scatter diagrams of objects of class dudi
.
# S3 method for dudi
scatter(x, xax = 1, yax = 2, clab.row = 0.75, clab.col = 1,
permute = FALSE, posieig = "top", sub = NULL, …)
an object of class dudi
the column number for the x-axis
the column number for the y-axis
a character size for the rows
a character size for the columns
if FALSE, the rows are plotted by points and the columns by arrows. If TRUE it is the opposite.
if "top" the eigenvalues bar plot is upside, if "bottom" it is downside, if "none" no plot
a string of characters to be inserted as legend
further arguments passed to or from other methods
scatter.dudi
is a factorial map of individuals and the projection of the vectors of the canonical basis multiplied by a constante of rescaling. In the eigenvalues bar plot,the used axes for the plot are in black, the other kept axes in grey and the other in white.
The permute
argument can be used to choose between the distance biplot (default) and the correlation biplot (permute = TRUE).
# NOT RUN {
data(deug)
scatter(dd1 <- dudi.pca(deug$tab, scannf = FALSE, nf = 4),
posieig = "bottomright")
data(rhone)
dd1 <- dudi.pca(rhone$tab, nf = 4, scann = FALSE)
if(adegraphicsLoaded()) {
scatter(dd1, row.psub.text = "Principal component analysis")
} else {
scatter(dd1, sub = "Principal component analysis")
}
# }
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