Description Usage Arguments Details Value Author(s) Examples

This function generates a birth-death tree in discrete time steps at the same time as recording the long lat of each brach at the end of each step

1 2 3 4 5 6 7 8 9 | ```
TreeWalkerDiscrete(
b = 0.1,
d = 0.05,
steps = 50,
slon = 0,
slat = 0,
steplengthsd = 100,
EarthRad = 6367.4447
)
``` |

`b` |
per-lineage birth (speciation) rate |

`d` |
per-lineage death (extinction) rate |

`steps` |
number of time steps to use |

`slon` |
starting longitude |

`slat` |
starting latitude |

`steplengthsd` |
standard deviation used for random walk draws |

`EarthRad` |
Earth radius in kilometres. |

This function is based on the function sim.bdtree in geiger <http://cran.r-project.org/web/packages/geiger/geiger.pdf>.

tree a phylogenetic tree

longitudes a matrix with rows corresponding to the tree edges and colunns to time step

latitudes a matrix with rows corresponding to the tree edges and colunns to time step

Laura C. Soul lauracsoul@gmail.com

1 | ```
TreeWalkerDiscrete(b=0.1, d=0.05, steps=50, slon=0, slat=0, steplengthsd = 100)
``` |

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