metePsi: Equation of the PMF for the METE individual metabolic rate...

In cmerow/meteR: Fitting and Plotting Tools for the Maximum Entropy Theory of Ecology (METE)

Description

metePsi is a low level function to calculate the value of Ψ(e | N_0, S_0, E_0) (the distribution of metabolic rates/power across all individuals in a commmunity) at the given value of e; vectorized in e.

Usage

metePsi(e, la1, la2, Z, S0, N0, E0)

Arguments

e	the value (metabolic rate/power) at which to calculate Ψ
la1, la2	Lagrange multipliers
Z	partition function
S0	Total number of species
N0	Total number of individuals
E0	Total metabolic rate

Details

Typically only used in ipd.meteESF and not called by the user.

Value

numeric vector of length equal to length of e

Author(s)

Andy Rominger <[e-mail]>, Cory Merow

References

Harte, J. 2011. Maximum entropy and ecology: a theory of abundance, distribution, and energetics. Oxford University Press.

See Also

ipd.mete

Examples

data(arth)
esf1 <- meteESF(spp=arth$spp,
                abund=arth$count,
                power=arth$mass^(.75),
                minE=min(arth$mass^(.75)))
metePsi(1:10,
        esf1$La[1],esf1$La[2],
        esf1$Z,esf1$state.var['S0'],
        esf1$state.var['N0'],
        esf1$state.var['E0'])

cmerow/meteR documentation built on May 13, 2019, 8:23 p.m.