set_diet: Set Diet Data for Bioenergetic Objects

In fb4package: 'Fish Bioenergetics 4.0' Model Implementation with High-Performance 'TMB' Backend

Set Diet Data for Bioenergetic Objects

Description

Updates the diet data component of a Bioenergetic object with new diet composition and prey energy information.

Usage

set_diet(
  x,
  diet_proportions,
  prey_energies,
  indigestible_prey = NULL,
  normalize_diet = TRUE
)

Arguments

x	Bioenergetic object
diet_proportions	Data frame with daily diet proportions
prey_energies	Data frame with daily prey energy densities
indigestible_prey	Data frame with indigestible proportions (optional)
normalize_diet	Logical, whether to normalize diet proportions to sum to 1 (default TRUE)

Value

The Bioenergetic object x with its diet_data component updated (prey names, proportions, energies, and optionally indigestible fractions), and fitted reset to FALSE.

Examples

bio <- Bioenergetic(
  species_params = list(
    consumption = list(CEQ = 1, CA = 0.303, CB = -0.275, CQ = 0.06)
  ),
  species_info = list(common_name = "Example fish")
)
diet  <- data.frame(Day = 1:365, prey1 = 0.6, prey2 = 0.4)
energ <- data.frame(Day = 1:365, prey1 = 4000, prey2 = 2500)
bio   <- set_diet(bio, diet, energ)

fb4package documentation built on May 8, 2026, 1:07 a.m.