Description Usage Arguments Author(s)

View source: R/Single_stock_multi_q_REDUNDANT.R

Function optimizes catchability (q, where F=qE) required to get to user-specified stock depletion

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 | ```
getq_multi(
x,
D,
SSB0,
nareas,
maxage,
Np,
pyears,
M_ageArray,
Mat_age,
Asize,
Wt_age,
FleetP,
Perr,
mov,
SRrel,
hs,
R0a,
SSBpR,
aR,
bR,
bounds = c(1e-05, 15),
maxF,
MPAc,
CFp,
useCPP = TRUE
)
``` |

`x` |
Integer, the simulation number |

`D` |
A numeric vector nsim long of sampled depletion |

`SSB0` |
A numeric vector nsim long of total unfished spawning biomass |

`nareas` |
The number of spatial areas |

`maxage` |
The maximum age |

`pyears` |
The number of years to project forward. Equal to 'nyears' for optimizing for q. |

`M_ageArray` |
An array (dimensions nsim, maxage, nyears+proyears) with the natural mortality-at-age and year |

`Mat_age` |
An array (dimensions nsim, maxage, proyears+nyears) with the proportion mature for each age-class |

`Asize` |
A matrix (dimensions nsim, nareas) with size of each area |

`Wt_age` |
An array (dimensions nsim, maxage, nyears+proyears) with the weight-at-age and year |

`FleetP` |
A list of Fleets containing entries for V, retA, Find and Spat_targ |

`mov` |
An array (dimensions nsim, nareas, nareas) with the movement matrix |

`SRrel` |
A numeric vector nsim long specifying the recruitment curve to use |

`hs` |
A numeric vector nsim long with the steepness values for each simulation |

`R0a` |
A matrix (dimensions nsim, nareas) with the unfished recruitment by area |

`SSBpR` |
A matrix (dimensions nsim, nareas) with the unfished spawning-per-recruit by area |

`aR` |
A numeric vector nareas long with the Ricker SRR a values |

`bR` |
A numeric vector nareas long with the Ricker SRR b values |

`bounds` |
A numeric vector of length 2 with bounds for the optimizer |

`maxF` |
A numeric value specifying the maximum fishing mortality for any single age class |

`useCPP` |
logical - use the CPP code? For testing purposes only |

`N` |
Array of the numbers-at-age in population. Dimensions are nsim, maxage, nyears, nareas. Only values from the first year (i.e 'N[,,1,]') are used, which is the current N-at-age. |

`MPA` |
A matrix of spatial closures by year |

T.Carruthers and A. Hordyk

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