manlysalpha: Manly's alpha feeding preference (Chesson 1978). Returns...

In selectapref: Analysis of Field and Laboratory Foraging

Description

Manly's alpha feeding preference (Chesson 1978). Returns Manly's alpha index from vectors of initial and final food item counts.

Usage

manlysalpha(initial, consumed, stand = FALSE, perc = FALSE,
  deplete = TRUE)

Arguments

initial	A vector of initial food items counts available to the organism in the environment
consumed	A vector of food items consumed by the organism
stand	Converts values with highest standardized to "1"? Defaults to FALSE.
perc	Converts values to percentages? Defaults to FALSE.
deplete	For use in experiments where food sources deplete? Defaults to TRUE.

Examples

initial_prey_count <- c(10,10,10,10,10,10)
number_prey_consumed <- c(9,8,1,3,5,9)
manlysalpha(initial = initial_prey_count, consumed = number_prey_consumed,
stand = TRUE, perc = FALSE, deplete = TRUE)

manlysalpha(initial = initial_prey_count, consumed = number_prey_consumed,
stand = TRUE, perc = TRUE, deplete = TRUE)

Example output

[1] 1.00000000 0.69897000 0.04575749 0.15490196 0.30103000 1.00000000
[1] 100.000000  69.897000   4.575749  15.490196  30.103000 100.000000

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