toydata_sp1po {MIAmaxent}

Occurrence and environmental toy data.

Description

A small, synthetic data set for distribution modeling, consisting of occurrence and environmental data, from Halvorsen (2013). The study area consists of 40 grid cells, with 8 row and 5 columns, in which 10 presences occur.

Usage

toydata_sp1po

Format

A data frame with 40 rows and 5 variables:

RV

response variable, occurrence either presence or uninformed background

EV11

explanatory variable: northing

EV12

explanatory variable: easting

EV13

explanatory variable: modified random uniform

EV14

explanatory variable: random uniform

Source

Halvorsen, R. (2013) A strict maximum likelihood explanation of MaxEnt, and some implications for distribution modelling. Sommerfeltia, 36, 1-132.