pc.biplot: pc.biplot

Usage Arguments

View source: R/pc.biplot.R

Usage

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pc.biplot(SV, x = 1, y = 2, obs.opt = list(cex = 2, pch = 20),
  obs.names = FALSE, obs.col.palette = NULL, obs.pch.palette = NULL,
  var.opt = NULL, var.names = NULL, var.col.palette = NULL,
  lwd = 2, filename = NULL, addPercEV = TRUE, var.suppl = NULL,
  var.suppl.color = NULL, var.text.size = 3, var.text.col = "gray30",
  var.text.relpos = NULL, var.text.cex = 1, var.arrow.size = 0.2,
  main = "Biplot", asp = 1, alpha = 0.5, xlim = NULL,
  ylim = NULL, legend = NULL, xylabs = "PC", percToAdd = NULL, ...)

Arguments

SV

the result of a call to princomp, prcomp, svd function. It can also be a metaMDS object (from vegan library).

x

dimension on the x axis (number or name)

y

dimension on the y axis (number or name)

obs.opt \item

obs.names

\item

obs.col.palette

\item

var.opt

\item

var.names

\item

var.col.palette

\item

lwd

\item

filename

\item

addPercEV

\item

var.suppl

\item

var.suppl.color

\item

var.text.size

\item

var.arrow.size

\item

main

\item

asp

\item

alpha

\item

xlim

\item

ylim

\item

legend

\item

xylabsstring or vector of labels. "PC" by default.

\item

percToAddusually NULL

\item

...

\item

titlea string. "Biplot" by default.

\item

obs.color.title

\item

obs.pch.title SV e' il risultato di prcomp, di princomp o di svd. assi calcolati come in http://en.wikipedia.org/wiki/Biplot si veda anche http://www.multivariatestatistics.org/biplots.html

data(pal.uno)

par(mar=c(1,1,1,1)) Y=matrix(rnorm(30),10,3) rownames(Y)=paste("obs",1:nrow(Y)) sv=svd(Y)

pc.biplot(sv)

#i nomi vengono persi con svd pc.biplot(sv,obs.names = TRUE) # soluzione a mano rownames(sv$u)=rownames(Y) pc.biplot(sv,obs.names = TRUE)

########### sv=svd(scale(Y,center=TRUE,scale=FALSE)) pc.biplot(sv,obs.names = TRUE)

pc=princomp(Y) pc.biplot(pc,obs.names = TRUE)

pc=prcomp(Y) pc.biplot(pc,obs.names = TRUE)

pc.biplot(sv,asp=1,obs.col.palette = pal.uno)

pc.biplot(sv,obs.opt = list(col=rep(1:2,5)))

~kwd1 ~kwd2


livioivil/rospo documentation built on Nov. 26, 2019, 5:36 p.m.