[R] barplot and pca plot in mvpart
zhangshu at math.umd.edu
Fri Feb 29 16:34:46 CET 2008
I'm using the R package called mvpart, which is about the multivariate
The function I wrote is:
mrt1<- mvpart(coefmat~sChip+sScreen+sMem,data=mixdata, xv="pick",
where "coefmat" is a matrix(of dimension N*K) to store the coefficients of
my functional data object; and the predictors in the formula are all
vectors of length N.
Since I set the option "bars=T" and "pca = T", I get the barplot at the
node of each leaves on my tree, and a pca plot. My question is that what
is the barplot about? Is it the histogram of the rows of "coefmat" in the
node, or the value for any predictor?
Also I get a messy pca plot. I guess each "square" (it's not quite square)
in the pca plot represents a node in the tree; but what are the squres
Many thanks for any help on this.
More information about the R-help