frogs: frogs dataset

Description Usage Format Source Examples

Description

Presence or absence of 9 species of frogs on 104 sites, 3 covariates collected on those site and their coordinates.

Usage

1

Format

frogs is a data frame with 104 observations on the following 14 variables.

Species_

1 to 9 indicate by a 0 the absence of the species on one site and by a 1 its presence

Covariates_

1 and 3 continuous variables

Covariates_

2 discrete variables

x

a numeric vector of first coordinates corresponding to each site

y

a numeric vector of second coordinates corresponding to each site

Source

Wilkinson, D. P.; Golding, N.; Guillera-Arroita, G.; Tingley, R. and McCarthy, M. A. (2018) A comparison of joint species distribution models for presence-absence data. Methods in Ecology and Evolution.

Examples

1
2
data(frogs, package="jSDM")
head(frogs)

jSDM documentation built on July 2, 2019, 5:03 p.m.