Description Usage Arguments Details Value See Also Examples

Calculates the spawning stock biomass (SSB) or total biomass of each species in the model.

1 2 3 | ```
calc_SSB(wgt, mature, N)
calc_biomass(wgt, N)
``` |

`wgt` |
A matrix with dimensions |

`mature` |
A matrix with dimensions |

`N` |
A matrix with dimensions |

The Spawning Stock Biomass is equal to `colSums(mature*N*wgt)`

and the total biomass is equal to `colSums(mature*N*wgt)`

.

`calc_SSB`

returns a numeric vector of length `nfish`

representing the SSB of each species (g).

`calc_biomass`

returns a numeric vector of length `length(species)`

where the `j`

th element is the biomass (g) of the `j`

th species.

1 2 3 4 5 6 7 8 9 10 | ```
# Set up and run the model
NS_params <- LeMansParam(NS_par, tau=NS_tau, eta=rep(0.25, 21), L50=NS_par$Lmat, other=1e12)
effort <- matrix(0.5, 10, dim(NS_params@Qs)[3])
model_run <- run_LeMans(NS_params, years=10, effort=effort)
# Calculate SSB
calc_SSB(wgt=NS_params@wgt, mature=NS_params@mature, N=model_run@N[,,101])
# Calculate biomass in the last time step
calc_biomass(wgt=NS_params@wgt, N=model_run@N[,,101])
``` |

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