sprex

Description

sprex is a package for calculating species richness for rarefaction and extrapolation. It contains functions for calculating non-parametric species richness such as jackknife, Chao1, and ACE. Also available are functions for plotting species richness and extrapolation curves.

Installation

To install the stable version from CRAN:

install.packages('sprex')

To install the latest version from GitHub:

# make sure you have Rtools installed
if (!require('devtools')) install.packages('devtools')
# install from GitHub
devtools::install_github('ericarcher/sprex')

Contact

• submit suggestions and bug-reports: https://github.com/ericarcher/sprex/issues
• send a pull request: https://github.com/ericarcher/sprex/
• e-mail: eric.archer@noaa.gov

version 1.4.2 (current on GitHub)

version 1.4.1

• added pct.range argument to clench function to specify minimum and maximum percentages of sample sizes
• changed argument m in expected.num.species function to accept vectors and return a matrix