Nothing
## Copyright (C) 2021 Rodney A. Sparapani
## This file is part of nftbart.
## bartModelMatrix.R
## nftbart is free software: you can redistribute it and/or modify
## it under the terms of the GNU General Public License as published by
## the Free Software Foundation, either version 2 of the License, or
## (at your option) any later version.
## nftbart is distributed in the hope that it will be useful,
## but WITHOUT ANY WARRANTY; without even the implied warranty of
## MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
## GNU General Public License for more details.
## You should have received a copy of the GNU General Public License
## along with this program. If not, see <http://www.gnu.org/licenses/>.
## Author contact information
## Rodney A. Sparapani: rsparapa@mcw.edu
bartModelMatrix=function(X, numcut=0L, usequants=FALSE, type=7,
rm.const=FALSE, cont=FALSE, xicuts=NULL,
rm.vars=NULL) {
if(length(rm.vars)>0) {
##rm.const=TRUE
rm.vars[rm.vars>0]=-rm.vars[rm.vars>0]
} else rm.vars=0
X.class = class(X)[1]
if(X.class=='factor') {
X.class='data.frame'
X=data.frame(X=X)
}
grp=0
if(X.class=='data.frame') {
p=dim(X)[2]
xnm = names(X)
j=0
for(i in 1:p) {
if(is.factor(X[[i]])) {
Xtemp = class.ind(X[[i]])
colnames(Xtemp) = paste(xnm[i],1:ncol(Xtemp),sep='')
X[[i]]=Xtemp
##grp[i]=ncol(Xtemp)
grp[i]=0
for(k in j+(1:ncol(Xtemp)))
if(!(k %in% -rm.vars)) grp[i]=grp[i]+1
j=j+ncol(Xtemp)
} else {
X[[i]]=cbind(X[[i]])
colnames(X[[i]])=xnm[i]
grp[i]=1-(j %in% -rm.vars)
j=j+1
}
}
names(grp)=xnm
Xtemp=cbind(X[[1]])
if(p>1) for(i in 2:p) Xtemp=cbind(Xtemp, X[[i]])
X=Xtemp
}
else if(X.class=='numeric' | X.class=='integer') {
X=cbind(as.numeric(X))
grp=1
}
else if(X.class=='NULL') return(X)
else if(X.class!='matrix')
stop('Expecting either a factor, a vector, a matrix or a data.frame')
N <- nrow(X)
p <- ncol(X)
##xinfo. <- matrix(nrow=p, ncol=numcut)
nc <- numcut
##rm.vars <- c()
if(N>0 && p>0 && (rm.const || numcut[1]>0))
for(j in 1:p) {
X.class <- class(X[1, j])[1]
if(X.class=='numeric' | X.class=='integer') {
xs <- unique(sort(X[ , j]))
k <- length(xs)
nc[j] <- numcut
if(cont) {
if(k==1) xs <-
seq(xs[1], xs[1]+1,
length.out=numcut+2)[-c(1, numcut+2)]
else xs <-
seq(xs[1], xs[k], length.out=numcut+2)[-c(1, numcut+2)]
}
else if(k==1) {
if(rm.const) rm.vars <- c(rm.vars, -j)
nc[j] <- 1
}
else if(k<numcut) {
xs <- 0.5*(xs[1:(k-1)]+xs[2:k])
nc[j] <- k-1
}
else if(usequants) {
xs <- quantile(X[ , j], type=type,
probs=(0:(numcut+1))/
(numcut+1))[-c(1, numcut+2)]
names(xs) <- NULL
}
else xs <-
seq(xs[1], xs[k], length.out=numcut+2)[-c(1, numcut+2)]
}
else
stop(paste0('Variables of type ', X.class, ' are not supported'))
##nc[j] <- length(xs)
##xinfo.[j, 1:nc[j] ] <- xs
}
X <- data.matrix(X)
if(numcut>0 && length(xicuts)==0)
xicuts=xicuts(X, numcut=numcut)
## if(length(xinfo)>0) {
## if(is.list(xinfo))
## for(j in 1:p) xinfo.[j, 1:length(xinfo[[j]])] <- xinfo[[j]]
## else if(is.matrix(xinfo)) xinfo. <- xinfo
## else stop('Only a list or a matrix can be provided for xinfo')
## for(j in 1:p) nc[j] <- sum(!is.na(xinfo.[j, ]))
## }
##xinfo <- xinfo.
if(rm.const || (length(rm.vars)>0 && rm.vars!=0)) {
X <- X[ , rm.vars]
nc <- nc[rm.vars]
##xinfo <- xinfo[rm.vars, ]
for(i in length(rm.vars):1)
xicuts[[-rm.vars[i] ]]=NULL
}
else if(length(rm.vars)==0) rm.vars <- 1:p
##dimnames(xinfo) <- list(dimnames(X)[[2]], NULL)
## remove duplicate columns
## if(dedupe) {
## na=is.na(apply(X, 1, sum))
## XtX=crossprod(X[!na, ])
## ev=eigen(XtX, TRUE, TRUE)$values
## names(ev)=dimnames(X)[[2]]
## } else ev=NULL
if(numcut==0) return(X)
else {
P=sum(grp)
dummy=matrix(0, nrow=2, ncol=P)
if(P==p) {
h=1
l=1
for(i in 1:length(grp)) {
for(j in 1:grp[i]) {
dummy[1, h]=l
dummy[2, h]=l+grp[i]-1
h=h+1
}
l=h
}
dimnames(dummy)[[2]]=dimnames(X)[[2]]
}
return(list(X=X, numcut=as.integer(nc), rm.const=rm.vars,
xicuts=xicuts, grp=grp, dummy=dummy))
}
}
Any scripts or data that you put into this service are public.
Add the following code to your website.
For more information on customizing the embed code, read Embedding Snippets.