TreeWalkerContinuous: Brownian motion (random walk) on a sphere

In laurasoul/dispeRse: Models For Paleobiogeography

Description

Perform Brownian motion (a random walk) on a sphere.

Usage

TreeWalkerContinuous(
  tree,
  slon = 0,
  slat = 0,
  niter = 1000,
  steplengthmean = 0,
  steplengthsd = 100,
  EarthRad = 6367.4447
)

Arguments

tree	tree (as phylo object) to use
slon	starting longitude
slat	starting latitude
niter	number of time steps to use
steplengthmean	mean used for random walk draws
steplengthsd	standard deviation used for random walk draws
EarthRad	Earth radius in kilometres.

Value

A list of edges with matrices showing times and coordinates

Author(s)

Graeme T. Lloyd [e-mail]

Examples

tree <- rtree(10)
TreeWalkerContinuous(tree, slat = 0, slon = 0, niter = 1000, steplengthmean = 0, steplengthsd = 100)

laurasoul/dispeRse documentation built on May 25, 2021, 4:50 a.m.