datasets: bbm package datasets

In flr/bbm: FLR Implementation of a Two-Stage Stock Assessment Model

bbm package datasets

Description

Data of Bay of Biscay anchovy from Ibaibarriaga et al. (2008).

Example dataset for the classes defined in bbm package. At the moment there is only one dataset of Bay of Biscay anchvoy (ICES Subarea 8), with information on catches together with surveys observations and timing. These are the same data as used in Ibaibarriaga et al. (2008).

Dataset can be loaded by issuing the data command, like in data(ane). and has defined the following objects:

• catch.ane, FLQuant Catch information in biomass for recruits (age 1 individuals) and adults.

• indicesB.ane, FLIndices Observations from surveys of total biomass, along with survey timing.

• indicesP.ane, FLIndices Observations from surveys of proportions of recruits in biomass, along with survey timing.

• control.ane, bbmControl Object with information on instantaneous rate of biomass decrease (g = M - G, vector) and information on whether bbm parameters are fixed or not (param.fix, FLPar).

• inits.ane, FLPar Initial values for the parameters of the bbm assessment model.

References

Ibaibarriaga et al. (2008). "A Two-Stage Biomass Dynamic Model for Bay of Biscay Anchovy: A Bayesian Approach." ICES J. of Mar. Sci. 65: 191-205.

See Also

bbm, FLQuant, FLQuants, FLStock, FLIndices, bbmControl, FLPar, bbmFLPar

Examples

data(ane)
ls()

is(catch.ane)
catch.ane

is(inits.ane)
inits.ane

is(control.ane)
control.ane

is(indicesB.ane)
indicesB.ane
is(indicesP.ane)
indicesP.ane

flr/bbm documentation built on Sept. 6, 2022, 8:56 p.m.