Set species interaction matrix
setInteraction(params, interaction = NULL)
| params | MizerParams object |
|---|---|
| interaction | Interaction matrix of the species (predator by prey). Entries should be numbers between 0 and 1. See "Setting interactions" section below. |
MizerParams object
The species interaction matrix \(\theta_{ij}\), is used when calculating the
food encounter rate in getEncounter and the predation mortality rate in
getPredMort. Its entries are dimensionless numbers between
0 and 1 that characterise the strength at which predator species \(i\)
predates on prey species \(j\).
This function checks that the supplied interaction
matrix is valid and then stores it in the interaction slot of the
params object before returning that object.
The order of the columns and rows of the interaction argument should be the
same as the order in the species params dataframe in the params object.
If you supply a named array then the function will check the order and warn
if it is different.
The interaction of the species with the plankton are set via a column
interaction_p in the species_params data frame. Again the entries
have to be numbers between 0 and 1. By default this column is set to all
1s.
Other functions for setting parameters:
setBMort(),
setFishing(),
setInitial(),
setIntakeMax(),
setMetab(),
setParams(),
setPlankton(),
setPredKernel(),
setReproduction(),
setSearchVolume()
if (FALSE) { params <- newTraitParams() interaction <- params@interaction interaction[1, 3] <- 0 params <- setInteraction(params, interaction) }