ivlev_electivity {electivity} | R Documentation |
Bounded between -1.0 (avoidance), 0 (random feeding), and +1.0 (preference).
ivlev_electivity(r, p)
r |
(Numeric) Resource utilisation. |
p |
(Numeric) Resource availability. |
A numeric vector.
Lechowicz, M.J., 1982. The sampling characteristics of electivity indices. Oecologia 52, 22–30. https://doi.org/10.1007/BF00349007
data(moth_distrib)
ivlev_electivity(moth_distrib$r, moth_distrib$p)