Obtain dl

Obtain dl for use later in calculating phi. This function is used within the get_data function so it is generally not needed directly.

Usage

get_dl(length_mu_ysa, length_sd_a)

Arguments

length_mu_ysa

an array containing the mean length at age (a) for each year (y) and season (s).

length_sd_a

a vector containing the standard deviation of the mean length at age.

Value

an array.

Details

Obtain dl for use later in calculating phi(a, y). From the PRELIMINARY_CALCS_SECTION of sbtmod.tpl. More fine-scale than lenage_dist_syal. Needs a bit more detail to get it right. Integrates over length-at-age distribution to get phi(age,year).

Examples

length_mu_ysa <- get_length_at_age(length_mean = sbt::length_mean)
dl_yal <- get_dl(length_mu_ysa = length_mu_ysa, length_sd_a = sbt::length_sd$SD)