markChanges | R Documentation |
Adds the reconstructed changes to a plotted tree with a stochastically mapped discrete character.
markChanges(tree, colors=NULL, cex=1, lwd=2, plot=TRUE)
tree |
an object of class |
colors |
a named vector of colors used to plot the stochastically mapped character on the tree. |
cex |
expansion factor for line height. |
lwd |
line width. |
plot |
logical value indicating whether the changes should be plotted or not. |
This function returns (invisibly) a matrix containing the x & y coordinates of the marked changes on the plotted tree.
Liam Revell liam.revell@umb.edu
Revell, L. J. (2024) phytools 2.0: an updated R ecosystem for phylogenetic comparative methods (and other things). PeerJ, 12, e16505.
plotSimmap
## load tree and data from Revell & Collar (2009)
data(sunfish.tree)
data(sunfish.data)
## extract discrete character (feeding mode)
fmode<-setNames(sunfish.data$feeding.mode,
rownames(sunfish.data))
## fit model
er_model<-fitMk(sunfish.tree,fmode,model="ER",
pi="fitzjohn")
## generate single stochastic map
sunfish_smap<-simmap(er_model,nsim=1)
## plot stochastic map & mark changes
cols<-setNames(c("blue","red"),levels(fmode))
plot(sunfish_smap,cols,ftype="i")
markChanges(sunfish_smap,colors=cols,lwd=6)
par(mar=c(5.1,4.1,4.1,2.1))
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