Calculates the fishing mortality from all gears by
species and size at each time step in the
argument. The total fishing mortality is just the sum of
the fishing mortalities imposed by each gear.
The effort of each fishing gear. Only
needed if the object argument is of class
Subset the returned fishing mortalities
by time. The time range is either a vector of values, a
vector of min and max time, or a single value. Default is
the whole time range. Only used if the
Only used when object is of type
An array. If the effort argument has a time dimension, or
object is of class
MizerSim, the output array has
three dimensions (time x species x size). If the effort
argument does not have a time dimension, the output array
has two dimensions (species x size).
Here: fishing mortality = catchability x selectivity x effort.
effort argument is only used if a
MizerParams object is passed in. The
argument can be a two dimensional array (time x gear), a
vector of length equal to the number of gears (each gear
has a different effort that is constant in time), or a
single numeric value (each gear has the same effort that
is constant in time). The order of gears in the
effort argument must be the same the same as in
If the object argument is of class
the effort slot of the
MizerSim object is used and
effort argument is not used.
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## Not run: data(NS_species_params_gears) data(inter) params <- MizerParams(NS_species_params_gears, inter) # Get the total fishing mortality when effort is constant for all gears and time: getFMort(params, effort = 1) # Get the total fishing mortality when effort is different # between the four gears but constant in time: getFMort(params, effort = c(0.5,1,1.5,0.75)) # Get the total fishing mortality when effort is different # between the four gears and changes with time: effort <- array(NA, dim = c(20,4)) effort[,1] <- seq(from=0, to = 1, length=20) effort[,2] <- seq(from=1, to = 0.5, length=20) effort[,3] <- seq(from=1, to = 2, length=20) effort[,4] <- seq(from=2, to = 1, length=20) getFMort(params, effort=effort) # Get the total fishing mortality using the effort already held in a MizerSim object. sim <- project(params, t_max = 20, effort = 0.5) getFMort(sim) getFMort(sim, time_range = c(10,20)) ## End(Not run)
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