Description Usage Arguments Value Author(s) Examples

View source: R/StochasticSRA.R

Catch at age and catch simulator.

1 2 3 | ```
SRAsim(OM, qmult = 0.5, CAApatchy = 0.4, Cpatchy = 1,
Ipatchy = 0.4, MLpatchy = 0.4, nCAA = 100, nL = 200,
sigmaE = 0.25, sigmaI = 0.1)
``` |

`OM` |
An operating model object with M, growth, stock-recruitment and maturity parameters specified. |

`qmult` |
Fraction of natural mortality rate that is mean fishing mortality (Fishing catchability multiplier) |

`CAApatchy` |
The fraction of years that have catch at age data |

`Cpatchy` |
The fraction of years that have catch data |

`Ipatchy` |
The fraction of years that have index data |

`MLpatchy` |
The fraction of years that have mean length data |

`nCAA` |
The number of independent annual catch at age observations (same among all years) |

`nL` |
The number of independent annual catch at length observations (same among all years) for calculating mean length |

`sigmaE` |
Level of simulated interannual variability in effort (F) expressed as a lognormal SD |

`sigmaI` |
Observation error in relative abundance indices expressed as a lognormal SD |

A list: Chist = historical catch series,Recdevs = historical recruitment deviations (mean = 1), CAA = catch at age matrix, N = numbers at age matrix, SSB = annual spawning biomass, FM = Fishing mortality rate at age matrix, M = natural mortality rate `classy`

T. Carruthers (Canadian DFO grant)

1 |

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