This function adds an arrow to a plotted tree.
add.arrow(tree=NULL, tip, ...)
an object of class "phylo"
, "contMap"
, or "densityMap"
. If not supplied, the function will obtain the last plotted phylogeny from the environmental variable last_plot.phylo
.
label of tip or tip or node number. If tree=NULL
then the tip or node number must be supplied.
optional arguments to control the shape and size of the arrow including: its length (arrl
) in the units of the plot; the length of the arrowhead (hedl
); the total angle between the wings in the arrowhead (angle
); the line width for the plotted lines (lwd
); the offset from the tip or end of tip label, in character widths (offset
); and the color (col
).
This function presently works for radial (type="fan"
) and right facing square phylograms (type=
"phylogram"
). Trees can be plotted using phytools function plotTree
, plotSimmap
, contMap
, densityMap
, and ape S3 method plot.phylo
.
Revell, L. J. (2012) phytools: An R package for phylogenetic comparative biology (and other things). Methods Ecol. Evol., 3, 217-223.