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makebina<-function(et){
#source("~/delt/R/makebina.R")
#list(frame)
#frame:
#var splitting variable or "<leaf>"
#n number of cases
#dev deviance of the node
#yval fitted value
#split/splits two-column matrix of the label for the left and right splits
#splits.cutleft splits.cutright
len<-length(et$split)
var<-matrix("",len,1)
split<-matrix("",len,2)
n<-matrix(0,len,1)
dev<-matrix(0,len,1)
yval<-matrix(0,len,1)
leve<-matrix(0,len,1) #level for each node
runnum<-matrix(0,len,1) #ordinal number in the (imaginary) full bin tree
runredu<-matrix(0,len,1)
leve[1]<-1
runnum[1]<-1
pino<-matrix(0,len,1)
pinoind<-1
pino[1]<-1
laskuri<-0
while (pinoind>0){
cur<-pino[pinoind]
pinoind<-pinoind-1
laskuri<-laskuri+1
n[laskuri]<-et$nelem[cur] #+1
dev[laskuri]<-et$ssr[cur] #abs(et$ssr)
yval[laskuri]<-et$mean[cur]
if (et$left[cur]==0){
var[laskuri]<-"<leaf>"
}
else{
var[laskuri]<-paste("x",as.character(et$direc[cur]))
}
#var[i]<-as.character(et$direc[i])
if (et$left[cur]!=0){ #(!is.na(et$split[cur])){
#split[laskuri,1]<-as.character(et$split[cur])
#split[laskuri,2]<-as.character(et$split[cur])
split[laskuri,1]<-format(et$split[cur],digits=2,nsmall=1)
split[laskuri,2]<-format(et$split[cur],digits=2,nsmall=1)
}
runredu[laskuri]<-runnum[cur]
while (et$left[cur]>0){
#
# laita oikea pinoon, laske "leve" ja "runnum"
#
oikea<-et$right[cur]
#
pinoind<-pinoind+1
pino[pinoind]<-oikea
#
leve[oikea]<-leve[cur]+1
runnum[oikea]<-childcode(leve[cur],runnum[cur])$right
#
# count "leve" ja "runnum", go to et$left, update
#
vasen<-et$left[cur]
#
leve[vasen]<-leve[cur]+1
runnum[vasen]<-childcode(leve[cur],runnum[cur])$left
#
cur<-vasen
#
laskuri<-laskuri+1
n[laskuri]<-et$nelem[cur] #+1
dev[laskuri]<-et$ssr[cur] #abs(et$ssr)
yval[laskuri]<-et$mean[cur]
if (et$left[cur]==0){
var[laskuri]<-"<leaf>"
}
else{
var[laskuri]<-paste("x",as.character(et$direc[cur]))
}
#var[i]<-as.character(et$direc[i])
if (et$left[cur]!=0){ #if not child
#split[laskuri,1]<-as.character(et$split[cur])
#split[laskuri,2]<-as.character(et$split[cur])
split[laskuri,1]<-format(et$split[cur],digits=2,nsmall=1)
split[laskuri,2]<-format(et$split[cur],digits=2,nsmall=1)
}
runredu[laskuri]<-runnum[cur]
#
}
}
var<-var[1:laskuri]
split<-split[1:laskuri,]
n<-n[1:laskuri]
dev<-dev[1:laskuri]
yval<-yval[1:laskuri]
#
runredu<-runredu[1:laskuri]
#
#
frame<-data.frame(var=var,n=n,dev=dev,yval=yval)
row.names(frame)<-runredu
frame$splits<-array(split,c(laskuri,2),
list(character(0), c("cutleft", "cutright")))
#
where<-matrix(1,len,1)
terms<-""
call<-""
y<-FALSE
weigths<-FALSE
#
bintree<-list(frame=frame,where=where,terms=terms,call=call,y=y,weigths=weigths)
attr(bintree,"class")<-"tree"
return(bintree)
}
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