add.geoscale: Geological Time Scale for Phylogenies

In fmichonneau/phyloch: Tools for phylogenetics and taxonomy

Description

This function can be used to underlie chronograms with a geological time scale.

Usage

add.geoscale(phy, alpha = 0.5, ...)

Arguments

phy	An object of class phylo.
alpha	The alpha transparency, a number in [0,1].
...	Do not use!

Value

none

Author(s)

Christoph Heibl

References

International Commission on Stratigraphy. 2009. International stratigraphic chart: http://www.stratigraphy.org/upload/ISChart2009.pdf.

Examples

	
# phylogentic relationships of bird orders:
data(bird.orders)

# plot tree:
# setting edge and tip colors to zero (invisible) improves
# resolution 
plot(bird.orders, edge.color = 0, tip.color = 0)

# underly chronogram with geological time scale
add.geoscale(bird.orders)

# now plot tree again:
# arguments must be exactly the same of course, except for
# edge and tip colors
plot.phylo.upon(bird.orders)

fmichonneau/phyloch documentation built on May 16, 2019, 1:45 p.m.