Specify model and parameter configuration for movement when input$data$n_regions > 1

Specify model and parameter configuration for movement when input$data$n_regions > 1

set_move(input, move)

Arguments

input

list containing data, parameters, map, and random elements (output from wham::prepare_wham_input)

move

(optional) list specifying movement options: model, random effects, initial values, and parameters to fix (see details)

move specifies estimation options for movement. If NULL, no movement will occur. If there are multiple regions, each stock will be modeled separately in different regions without movement. move is a list with the following entries:

$stock_move

length = n_stocks, T/F whether each stock can move. If not provided then movement will be defined below for all stocks.

$separable

length = n_stocks, T/F whether movement should be modeled separably from mortality or both occuring simultaneously.

$mean_model

matrix (n_regions x (n_regions-1)): model options for fixed effects (mean and possibly variance) for each movement parameter are:

"none"

(default) no movement between regions.

"constant"

estimate a single movement rate to each region shared across all stocks, seasons, ages, years

"season"

estimate movement rates to each region for each season shared across all stocks, ages, years

"stock_constant"

estimate a movement rate for each stock to each region shared across all seasons, ages, years

"stock_season"

estimate a movement rate for each stock each season to each region shared across all ages, years

$age_re

matrix (n_regions x (n_regions-1)): options for age random effects (for each mean parameter defined in move$mean_model):

"none"

(default) no movement rate random effects by age.

"iid"

independent movement rate random effects by age.

"ar1"

allow first order autoregressive correlation of movement rate random effects by age.

$year_re

matrix (n_regions x (n_regions-1)): options for yearly random effects (for each mean parameter defined in move$mean_model):

"none"

(default) no movement rate random effects by year.

"iid"

independent movement rate random effects by year.

"ar1"

allow first order autoregressive correlation of movement rate random effects by year.

$prior_sigma

array (n_stocks x n_seasons x n_regions x n_regions - 1) of sd parameters for normal priors on mean movement parameters on transformed scale (-Inf,Inf)

$use_prior

array (n_stocks x n_seasons x n_regions x n_regions - 1) 0/1 indicator whether to include prior for mean movement parameters in joint log-likelihood.

$can_move

array (n_stocks x n_seasons x n_regions x n_regions) 0/1 indicator whether movement can occur from one region to another.

$must_move

array (n_stocks x n_seasons x n_regions) 0/1 indicator whether movement from region must occur.

$mean_vals

array (n_stocks x n_seasons x n_regions x n_regions-1) of initial movement rate parameters *from* each region. Usage depends on move$mean_model.

$sigma_vals

array (n_stocks x n_seasons x n_regions x n_regions -1) of initial standard deviations to use for random effects. Usage depends on move$age_re and move$year_re.

$cor_vals

array (n_stocks x n_seasons x n_regions x n_regions - 1x 2) of initial correlation values to use for random effects. Usage depends on move$age_re and move$year_re. cor_vals[,,,,1] is for correlation with age, and cor_vals[,,,,2] is for correlation with year.