MDSplot {randomForest} | R Documentation |
Plot the scaling coordinates of the proximity matrix from randomForest.
MDSplot(rf, fac, k=2, palette=NULL, pch=20, ...)
rf |
an object of class randomForest that contains
the proximity component. |
fac |
a factor that was used as response to train rf . |
k |
number of dimensions for the scaling coordinates. |
palette |
colors to use to distinguish the classes; length must be the equal to the number of levels. |
pch |
plotting symbols to use. |
... |
other graphical parameters. |
The output of cmdscale
on 1 - rf$proximity
is
returned invisibly.
If k > 2
, pairs
is used to produce the
scatterplot matrix of the coordinates.
Robert Gentleman, with slight modifications by Andy Liaw
set.seed(1) data(iris) iris.rf <- randomForest(Species ~ ., iris, proximity=TRUE, keep.forest=FALSE) MDSplot(iris.rf, iris$Species) ## Using different symbols for the classes: MDSplot(iris.rf, iris$Species, palette=rep(1, 3), pch=as.numeric(iris$Species))