scatter.coa {ade4} | R Documentation |
performs the scatter diagrams of a correspondence analysis.
scatter.coa(x, xax = 1, yax = 2, method = 1:3, clab.row = 0.75, clab.col = 1.25, posieig = "top", sub = NULL, csub = 2, ...)
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 |
Daniel Chessel chessel@biomserv.univ-lyon1.fr
Oksanen, J. (1987) Problems of joint display of species and site scores in correspondence analysis. Vegetatio, 72, 51–57.
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")