mizer (version 3.0.0)

mizer_rates_subset: Calculate a selected subset of the rates

Description

Internal helper used by the MizerSim rate getters. Given rate functions already resolved once with projectRateFunctions(), it calculates only those rates needed to obtain the requested targets (plus their dependencies), avoiding both the per-time-step cost of re-resolving the functions and the cost of computing rates that are not required. The individual calculations mirror those in mizerRates().

Usage

mizer_rates_subset(
  params,
  n,
  n_pp,
  n_other,
  t,
  effort,
  rates_fns,
  targets,
  ...
)

Value

A named list of the calculated rates, using the same element names as the list returned by mizerRates().

Arguments

params

A valid MizerParams object.

n

A matrix of species abundances (species x size).

n_pp

A vector of the resource abundance by size.

n_other

A named list of the abundances of other components.

t

The time for the calculation.

effort

The fishing effort. Only used when a target requires the fishing mortality.

rates_fns

Named list of resolved rate functions, as returned by projectRateFunctions().

targets

Character vector of rate names (as in params@rates_funcs) to calculate.

...

Passed on to the individual rate functions.