Description Usage Arguments Details Value Required Data Rendered Equations See Also Examples

A example mixed control MP that uses the Itarget1 output control MP together with a spatial closure.

1 2 | ```
Itarget1_MPA(x, Data, reps = 100, plot = FALSE, yrsmth = 5, xx = 0,
Imulti = 1.5)
``` |

`x` |
A position in the data object |

`Data` |
A data object |

`reps` |
The number of stochastic samples of the MP recommendation(s) |

`plot` |
Logical. Show the plot? |

`yrsmth` |
Years over which to smooth recent estimates of surplus production |

`xx` |
Parameter controlling the fraction of mean catch to start using in first year |

`Imulti` |
Parameter controlling how much larger target CPUE / index is compared with recent levels. |

The TAC is calculated as:
If *I_\textrm{recent} ≥q I_0*:

*\textrm{TAC}= 0.5 \textrm{TAC}^* ≤ft[1+≤ft(\frac{I_\textrm{recent} - I_0}{I_\textrm{target} - I_0}\right)\right]*

else:

*\textrm{TAC}= 0.5 \textrm{TAC}^* ≤ft[\frac{I_\textrm{recent}}{I_0}^2\right]*

where *I_0* is *0.8 I_{\textrm{ave}}* (the average index over the 2 x `yrsmth`

years prior to the projection period),
*I_\textrm{recent}* is the average index over the past `yrsmth`

years, and
*I_\textrm{target}* is `Imulti`

times *I_{\textrm{ave}}*,
and *\textrm{TAC}^** is:

*(1-x)C*

where *x* is argument `xx`

and C is the average catch over the last 5 years of the historical period.

This mixed control MP also closes Area 1 to fishing.

This MP has been included for demonstration purposes of a mixed control MP.

An object of class `Rec`

with the TAC, Spatial slot(s) populated

See Data for information on the `Data`

object

`Itarget1_MPA`

: Cat, Ind, LHYear, Year

See Online Documentation for correctly rendered equations

Other Index methods: `GB_slope`

,
`GB_target`

, `Gcontrol`

,
`ICI`

, `Iratio`

,
`Islope1`

, `Itarget1`

,
`ItargetE1`

1 |

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