ivlev: Ivlev's electivity (Ivlev 1961). Returns Ivlev's electivity...

In selectapref: Analysis of Field and Laboratory Foraging

Description

Ivlev's electivity (Ivlev 1961). Returns Ivlev's electivity index from vectors of consumed and available food items.

Usage

ivlev(available, consumed, jacob = FALSE)

Arguments

available	A vector of food items available to the organism in the environment
consumed	A vector of food items consumed by the organism
jacob	Converts to Jacob's electivity index? Defaults to FALSE.

Examples

availableprey <- c(10,10,10,10,10)
consumedprey <- c(9,0,0,1,5)
ivlev(available = availableprey, consumed = consumedprey, jacob = FALSE)
ivlev(available = availableprey, consumed = consumedprey, jacob = TRUE)

selectapref documentation built on Feb. 9, 2020, 1:06 a.m.