Nothing
placeLabels<-function(x,y=NA,labels,pointer=TRUE,cex=1,labelcol=par("fg"),
labelbg="white",border=par("fg"),pointercol=par("fg"),
pch=1,col=1,bg="white",flagcol="red") {
if(is.na(y) && is.list(x)) {
y<-unlist(x[[2]])
x<-unlist(x[[1]])
}
nlabels<-length(labels)
if(length(labelcol) < nlabels) labelcol<-rep(labelcol,length.out=nlabels)
if(length(labelbg) < nlabels) labelbg<-rep(labelbg,length.out=nlabels)
if(length(border) < nlabels) border<-rep(border,length.out=nlabels)
if(length(pointercol) < nlabels) pointercol<-rep(pointercol,length.out=nlabels)
if(length(pch) < nlabels) pch<-rep(pch,length.out=nlabels)
if(length(col) < nlabels) col<-rep(col,length.out=nlabels)
if(length(bg) < nlabels) bg<-rep(bg,length.out=nlabels)
for(i in 1:nlabels) {
points(x[i],y[i],pch=19,col=flagcol)
labelxy<-locator(1)
if(pointer)
segments(x[i],y[i],labelxy$x,labelxy$y,col=pointercol[i])
boxed.labels(labelxy$x,labelxy$y,labels[i],
col=labelcol[i],bg=labelbg[i],border=border[i])
points(rep(x[i],2),rep(y[i],2),pch=c(19,pch[i]),
col=c("white",col[i]),bg=c(NA,bg[i]))
}
}
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