---
name: "pxbdsim"
section: "1"
platform: "linux"
package: "phyx"
version: "1.3.2+ds-1"
release: "Debian 13 (Trixie)"
platforms: ["linux"]
url: "https://new.carta.tech/pxbdsim"
---

# pxbdsim(1)

birth-death tree simulator

## NAME

pxbdsim - birth-death tree simulator

## SYNOPSIS

**pxbdsim** \[*OPTIONS*\]...

## DESCRIPTION

Birth-death tree simulator.

## OPTIONS

- **-e**, **--extant**=*INT*

  number of extant species, alt to time

- **-t**, **--time**=*DOUBLE*

  timespan of simulation (age of root), alt to extant

- **-b**, **--birth**=*DOUBLE*

  birth rate, default=1

- **-d**, **--death**=*DOUBLE*

  death rate, default=0

- **-n**, **--nreps**=*INT*

  number of replicates, default=1

- **-s**, **--showextinct**

  show lineages that went extinct, default=false

- **-x**, **--seed**=*INT*

  random number seed, clock otherwise

- **-v**, **--verbose**

  print per-tree simulation summary (to cerr)

- **-o**, **--outf**=*FILE*

  output file, STOUT otherwise

- **-h**, **--help**

  display this help and exit

- **-V**, **--version**

  display version and exit

- **-C**, **--citation**

  display phyx citation and exit

## CITATION

Brown, Joseph W., Joseph F. Walker, and Stephen A. Smith. 2017. Phyx: phylogenetic tools for unix. Bioinformatics 33(12): 1886-1888. https://doi.org/10.1093/bioinformatics/btx063.

## AUTHOR

Written by Stephen A. Smith (blackrim), Joseph W. Brown

## REPORTING BUGS

Report bugs to: \<https://github.com/FePhyFoFum/phyx/issues\> phyx home page: \<https://github.com/FePhyFoFum/phyx\>

## COPYRIGHT

Copyright © 2013-2024 FePhyFoFum License GPLv3