This uses ggplot2::geom_tile() to produce a grid with a row aligned with
each tip on the tree, and a column for each type of data specified. If no
scales are specified, one is created for each factor column in the metadata
table.
Value
If phylepic is specified returns a ggplot, otherwise a function
that when passed a "phylepic" object produces a ggplot for use with
plot.phylepic().
See also
Other phylepic plots:
plot.phylepic(),
plot_calendar(),
plot_epicurve(),
plot_tree()