http://hafro.github.io/gadget/docs/userguide/chap-like.html#sec:surveydistribution

http://hafro.github.io/gadget/docs/userguide/chap-like.html#sec:surveydistribution

gadget_surveydistribution_component(
  weight = 0,
  name = "surveydistribution",
  data = NULL,
  area = NULL,
  length = NULL,
  age = NULL,
  stocknames = c(),
  fittype = "linearfit",
  parameters = NULL,
  suitability = list(),
  slope = NULL,
  intercept = NULL,
  epsilon = 10,
  likelihoodtype = "multinomial"
)

Arguments

weight

A numeric weighting

name

A descriptive name for the component, default same as component type

data

data.frame of age-length survey indices that Gadget is to use to fit the likelihood function to

area

Area aggregation, if not attached to the data.frame by MFDB

length

Length aggregation, if not attached to the data.frame by MFDB

age

Age aggregation, if not attached to the data.frame by MFDB

stocknames

A list of all the stocks to be aggregated into a single pseudo stock

fittype

Type of linear regression to use. One of 'linearfit' / 'powerfit'

parameters

Vector of 2 parameters that are used to calculate the survey index values from the modelled population

suitability

Suitability function for survey fleet

slope

Parameter for linear regression

intercept

Parameter for linear regression

epsilon

Used when probability is very unikely, default 10.

likelihoodtype

What function is to be used to compare the modelled survey index distribution to the input survey index distribution. One of 'multinomial' / 'pearson' / 'gamma' / 'log'