ITM {DLMtool} | R Documentation |
An index target MP where the TAC is modified according to current index levels (mean index over last number of years determined by natural mortality (M)) relative to a target level.
ITM(x, Data, reps = 100, plot = FALSE)
x |
A position in the data object |
Data |
A data object |
reps |
The number of stochastic samples of the MP recommendation(s) |
plot |
Logical. Show the plot? |
The TAC is caluclated as:
\textrm{TAC}_y = \textrm{TAC}_{y-1} δ I
where δ I is the ratio of the mean index over 4\frac{1}{M}^{1/4} years
to the reference index (Data@Iref
).
The maximum fractional change in TAC is determined by mc, defined as mc = \textrm{max}≤ft(\frac{5 + 25M}{100}, 0.2\right)
An object of class Rec-class
with the TAC
slot populated with a numeric vector of length reps
See Data-class
for information on the Data
object
ITM
: Ind, Iref, MPrec, Mort
See Online Documentation for correctly rendered equations
T. Carruthers
ITM(1, Data=MSEtool::SimulatedData, plot=TRUE)