Sets the intrinsic resource growth rate and the intrinsic resource carrying capacity as well as the name of the function used to simulate the resource dynamics
setResource(
params,
resource_rate = NULL,
resource_capacity = NULL,
reset = FALSE,
r_pp = resource_params(params)[["r_pp"]],
kappa = resource_params(params)[["kappa"]],
lambda = resource_params(params)[["lambda"]],
n = resource_params(params)[["n"]],
w_pp_cutoff = resource_params(params)[["w_pp_cutoff"]],
resource_dynamics = NULL,
...
)getResourceRate(params)
resource_rate(params)
resource_rate(params) <- value
getResourceCapacity(params)
resource_capacity(params)
resource_capacity(params) <- value
getResourceDynamics(params)
resource_dynamics(params)
resource_dynamics(params) <- value
A MizerParams object
Optional. Vector of resource intrinsic birth rates
Optional. Vector of resource intrinsic carrying capacity
If set to TRUE, then both
resource_rate
and
resource_capacity
will be reset to the value calculated from the resource
parameters, even if they were previously overwritten with custom values. If
set to FALSE (default) then a recalculation from the resource parameters
will take place only if no custom values have been set.
Coefficient of the intrinsic resource birth rate
Coefficient of the intrinsic resource carrying capacity
Scaling exponent of the intrinsic resource carrying capacity
Allometric growth exponent for resource
The upper cut off size of the resource spectrum. The carrying capacity will be set to 0 above this size. Default is 10 g.
Optional. Name of the function that determines the
resource dynamics by calculating the resource spectrum at the next time
step from the current state. You only need to specify this if you do not
want to use the default resource_semichemostat()
.
Unused
.
setResource
: A MizerParams object with updated resource parameters
By default, mizer uses a semichemostat model to describe the resource
dynamics in each size class independently. This semichemostat dynamics is implemented
by the function resource_semichemostat()
. You can change the
resource dynamics by writing your own function, modelled on
resource_semichemostat()
, and then passing the name of your
function in the resource_dynamics
argument.
The resource_rate
argument is a vector specifying the intrinsic resource
growth rate for each size class. If it is not supplied, then the intrinsic growth
rate \(r(w)\) at size \(w\)
is set to $$r(w) = r_{pp}\, w^{n-1}.$$
The values of \(r_{pp}\) and \(n\) are taken from the r_pp
and n
arguments.
The resource_capacity
argument is a vector specifying the intrinsic resource
carrying capacity for each size class. If it is not supplied, then the
intrinsic carrying capacity \(c(w)\) at size \(w\)
is set to $$c(w) = \kappa\, w^{-\lambda}$$
for all \(w\) less than w_pp_cutoff
and zero for larger sizes.
The values of \(\kappa\) and \(\lambda\) are taken from the kappa
and lambda
arguments.
Other functions for setting parameters:
gear_params()
,
resource_params()
,
setExtMort()
,
setFishing()
,
setInitialValues()
,
setInteraction()
,
setMaxIntakeRate()
,
setMetabolicRate()
,
setParams()
,
setPredKernel()
,
setReproduction()
,
setSearchVolume()
,
species_params()