EL4P.Mesh.Fit: Fit EL4P Aquatic Ecology Module to Mesh of K

In smitdave/MASH: MASH (Modular Analysis and Simulation for Human Health)

Description

Fit the EL4P Aquatic Ecology module on a sampling grid of K values to match a desired level of daily emergence at equilibrium. This means that the site-specific density dependent mortality parameter psi will be fit to K based on a sampling grid of values for K in log-space. If plot = TRUE, the linear regression of psi against logged values of K should show exact linear dependence, indicating fitted psi will produce desired level of lambda at equilibrium. Compare with setupAquaPop_EL4Pexact which will fit psi based on an exact LANDSCAPE. This will also return the coefficients of a linear regression of K on psi (see psi2K_cf) to give the functional relationship between K and psi.

Usage

EL4P.Mesh.Fit(mesh_N, EL4P_PAR, var_tol = 0.1, plot = FALSE)

Arguments

mesh_N	number of sample points of K (density of mesh of K values used to fit psi)
EL4P_PAR	parameters from EL4P.Parameters
var_tol	target minimum variance in lambda for emergence for equilibrium to be assumed
plot	produce diagnostic plots of fitting algorithm

Value

named list

• equilibriumPops: equilibrium aquatic populations

• psi: fitted values of psi

• alpha: sampled values of alpha

• K: sampled values of K

• meshK: sampled values of K

• psi2K_cf: slope coefficient between 1/psi and K

smitdave/MASH documentation built on May 30, 2019, 5:02 a.m.