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Geiger

Major features

geiger is a (growing) collection of methods developed over the years by many researchers. Here is a a non-comprehensive list of methods:

  • Fit continuous models of evolution (BM, OU, EB, Pagel models, etc.)
  • Fit discrete models of evolution (Mk and variants)
  • Identify shifts in the rate of continuous trait evolution(doi:10.1111/j.1558-5646.2011.01401.x)
  • Fit continuous trait models to unresolved data using ABC(doi:10.1111/j.1558-5646.2011.01474.x)
  • Use fossil information to improve macroevolutionary inference(doi:10.1111/j.1558-5646.2012.01723.x)
  • Identify shifts in the rate of diversification(doi:10.1073/pnas.0811087106)
  • Posterior predictive model assessment(doi:10.1093/sysbio/syt066)
  • Time-scaling large phylogenies with 'congruification'(doi:10.1111/2041-210X.12051)

Citing geiger

If you use geiger, please cite:

Pennell, M.W., J.M. Eastman, G.J. Slater, J.W. Brown, J.C. Uyeda, R.G. FitzJohn, M.E. Alfaro, and L.J. Harmon. 2014. geiger v2.0: an expanded suite of methods for fitting macroevolutionary models to phylogenetic trees. Bioinformatics 30:2216-2218.

in addition to the original papers describing the methods.

Acknowledgements

We thank the CRAN team for help cleaning up our package errors.

Feedback

We are always looking to improve geiger. If you have comments/questions/ideas, we encourage you to get in contact by posting an issue or making a pull request.

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Version

Install

install.packages('geiger')

Monthly Downloads

5,621

Version

2.0.12

License

GPL (>= 2)

Issues

Pull Requests

Stars

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Maintainer

Luke Harmon

Last Published

August 31st, 2026

Functions in geiger (2.0.12)

geiger-example

internal geiger functions
geiger-internal

internal geiger functions
geiger-package

GEIGER
load.rjmcmc

posterior samples from single or multiple MCMC runs
fitDiscrete

Model fitting for discrete comparative data
gbresolve

NCBI taxonomy
make.gbm

tailor reversible-jump Markov chain Monte Carlo sampling
mecca

running a MECCA analysis
nh.test

using the Freckleton and Harvey node-height test
pp.mcmc

using posterior predictive MCMC for modeling quantitative trait evolution
name.check

Compares taxa in data and tree
plot.medusa

MEDUSA: modeling evolutionary diversification using stepwise AIC
nodelabel.phylo

Blending information from taxonomies and trees
ratematrix

evolutionary VCV matrix
medusa

MEDUSA: modeling evolutionary diversification using stepwise AIC
startingpt.mecca

starting values for MECCA
r8s.phylo

call r8s from geiger
sim.bd

birth-death population simulator
to.auteur

conversion of MCMC samples between auteur and coda
rc

relative cladogenesis test
tips

descendents of a given node in a phylogenetic tree
rjmcmc.bm

Bayesian sampling of shifts in trait evolution: relaxed Brownian motion
rescale.phylo

Rescale object of class "phylo"
sim.bdtree

birth-death tree simulator
sim.char

simulate character evolution
treedata

compare taxa in data and tree
subset.phylo

blending information from taxonomies and trees
dcount

prior densities for truncated discrete random variable
aicw

determining Akaike weights
calibrate.mecca

calibrating MECCA
aicm

Akaike's Information Criterion for MCMC samples (AICM)
bd.ms

estimate net diversification rate
calibrate.rjmcmc

initialize proposal width
aov.phylo

phylogenetic ANOVA and MANOVA
congruify.phylo

ultrametricization of trees from a supplied timetree
dtt

disparity-through-time
drop.extinct

prune specified taxa from a phylogenetic tree
geiger-data

example datasets
fitContinuousMCMC

Fit models of continuous trait evolution to comparative data using MCMC
fitContinuous

Model fitting for continuous comparative data
geiger-defunct

deprecated functions in GEIGER