supcol {ade4} | R Documentation |
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 B 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) }