simAgeBias {FSATeach} | R Documentation |

Constructs an age-bias table interactively. This age-bias table can then be used to convert the true ages of a sample of fish to ‘biased’ ages.

simAgeBias(max.age = 10, show.props = TRUE, scale = TRUE) simApplyAgeBias(ages, bias.table = NULL, agree.table = NULL)

`max.age` |
A numeric indicating the maximum age to be modelled in the age bias table. |

`show.props` |
A logical indicating whether
proportions of fish at x-axis age or numbers of fish
should be shown on the interactive plot ( |

`scale` |
A logical indicating whether the plotted
value of the proportions or numbers should be scaled in
relation to their numeric value ( |

`ages` |
A vector containg the ‘true’ ages of individual fish. |

`bias.table` |
A table that contains, as columns, the proportion of fish of a certain ‘true’ age in various ‘biased’ ages – i.e., a column-proportions table constructed from an age agreement table where the ‘true’ ages correspond to columns. |

`agree.table` |
A table that contains the age-agreement table where the ‘true’ ages correspond to columns. |

NEED DETAIL HERE.

If `simApplyAgeBias`

is used then a vector of
‘biased’ ages is returned. If `simAgeBias`

is used then a list with the following two items is
returned:

agree a table containing the age agreement table resulting from the interactive process.

bias a table containing the bias table resulting from the interactive process.

`simAges`

, `ageComp`

in FSA

## set seed for repeatability set.seed(5234734) ## Simulated individual ages (random) # see simAges functions bg.ages <- simAges(N0=500,A=0.35) summary(bg.ages) ## Simulated ages given the above 'true' ages and age biases from interactive choices # NOT RUN because of interactive choices ## Not run: bg.ab <- simAgeBias(max.age=max(bg.ages)) bg.ages2 <- simApplyAgeBias(bg.ages,bg.ab$bias) summary(bg.ages2) ## End(Not run)

[Package *FSATeach* version 0.0.1 Index]