| setExtEncounter {mizer} | R Documentation |
Set external encounter rate
Description
Set external encounter rate
Usage
setExtEncounter(params, ext_encounter = NULL, ...)
getExtEncounter(params)
ext_encounter(params)
ext_encounter(params) <- value
Arguments
params |
MizerParams |
ext_encounter |
Optional. An array (species x size) holding the external encounter rate. If not supplied, a default of 0 is used. |
... |
Unused |
value |
ext_encounter |
Value
setExtEncounter(): A MizerParams object with updated external encounter
rate.
getExtEncounter() or equivalently ext_encounter(): An array
(species x size) with the external encounter rate.
Setting external encounter rate
The external encounter rate is the rate at which a predator encounters food that is not explicitly modelled. It is a rate with units mass/year.
The ext_encounter argument allows you to specify an external encounter rate
that depends on species and body size. You can see an example of this in
the Examples section of the help page for setExtEncounter().
See Also
Other functions for setting parameters:
gear_params(),
setExtMort(),
setFishing(),
setInitialValues(),
setInteraction(),
setMaxIntakeRate(),
setMetabolicRate(),
setParams(),
setPredKernel(),
setReproduction(),
setSearchVolume(),
species_params()
Examples
params <- newMultispeciesParams(NS_species_params)
#### Setting allometric encounter rate #######################
# Set coefficient for each species. Here we choose 0.1 for each species
encounter_pre <- rep(0.1, nrow(species_params(params)))
# Multiply by power of size with exponent, here chosen to be 3/4
# The outer() function makes it an array species x size
allo_encounter <- outer(encounter_pre, w(params)^(3/4))
# Change the external encounter rate in the params object
ext_encounter(params) <- allo_encounter