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## subtreeplot.R (2017-05-26)
## Zoom on a Portion of a Phylogeny by Successive Clicks
## Copyright 2008 Damien de Vienne
## This file is part of the R-package `ape'.
## See the file ../COPYING for licensing issues.
subtreeplot<-function(x, wait=FALSE, ...) {
sub<-subtrees(x, wait=wait)
y<-NULL
plot.default(0, type="n",axes=FALSE, ann=FALSE)
repeat {
split.screen(c(1,2))
screen(2)
if (is.null(y)) plot(x,...)
else plot(y,sub=paste("Node :", click),...)
screen(1)
plot(x,sub="Complete tree",main="Type ESC or right click to exit", cex.main=0.9, ...)
N.tip<-Ntip(x)
N.node<-Nnode(x)
# 5/24/17 changed by Klaus
# coor<-plotPhyloCoor(x)
lastPP <- get("last_plot.phylo", envir = .PlotPhyloEnv)
tips<-x$tip.label
nodes<-x$node.label
if (is.null(x$node.label)) nodes<-(N.tip+1):(N.tip+N.node)
labs<-c(rep("",N.tip), nodes)
#click<-identify(coor[,1], coor[,2], labels=labs, n=1)
click<-identify(lastPP$xx, lastPP$yy, labels=labs, n=1)
if (length(click) == 0) {return(y)}
if (click > N.tip) {
close.screen(c(1,2),all.screens = TRUE)
split.screen(c(1,2))
screen(1) #selects the screen to plot in
plot(x, sub="Complete tree", ...) # plots x in screen 1 (left)
screen(2)
for (i in 1:length(sub)) if (sub[[i]]$name==click) break
y<-sub[[i]]
}
else cat("this is a tip, you have to choose a node\n")
}
on.exit(return(y))
}
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