Projections of Supplementary Columns
performs projections of supplementary columns.
supcol(x, ...) ## S3 method for class 'dudi' supcol(x, Xsup, ...) ## S3 method for class 'coa' supcol(x, Xsup, ...)
x |
an object used to select a method |
Xsup |
an array with the supplementary columns ( |
... |
further arguments passed to or from other methods |
If supcol.dudi is used, the column vectors of Xsup are projected without prior modification onto the principal components of dudi with the scalar product associated to the row weightings of dudi.
A list of two components:
|
data frame containing the array with the supplementary columns transformed or not |
|
data frame containing the coordinates of the supplementary projections |
Daniel Chessel
Anne-Béatrice Dufour anne-beatrice.dufour@univ-lyon1.fr
data(rpjdl)
rpjdl.coa <- dudi.coa(rpjdl$fau, scan = FALSE, nf = 4)
rpjdl.coa$co[1:3, ]
supcol(rpjdl.coa, rpjdl$fau[, 1:3])$cosup #the same
data(doubs)
dudi1 <- dudi.pca(doubs$fish, scal = FALSE, scan = FALSE)
if(adegraphicsLoaded()) {
g1 <- s.arrow(dudi1$co, plot = FALSE)
g2 <- s.arrow(supcol(dudi1, data.frame(scalewt(doubs$env)))$cosup, plab.cex = 2, plot = FALSE)
G <- superpose(g1, g2, plot = TRUE)
} else {
s.arrow(dudi1$co)
s.arrow(supcol(dudi1, data.frame(scalewt(doubs$env)))$cosup, add.p = TRUE, clab = 2)
symbols(0, 0, circles = 1, inches = FALSE, add = TRUE)
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