GrowthData1: Hypothetical growth data for testing
In FSA: Simple Fisheries Stock Assessment Methods

GrowthData1

R Documentation

Hypothetical growth data for testing

Description

Hypothetical lengths at annual ages. These data are useful for testing growth related functions (e.g., findGrowthStarts) as they were generated from known growth functions (e.g., von Bertalanffy) with some random error and are, thus, “as good as it gets” for testing.

Format

A data frame of 179 observations on the following 5 variables:

age: Ages as a whole number
tlV: Total length simulated from a von Bertalanffy growth function with Linf=450, K=0.3, and t0=-0.5
tlG: Total length simulated from a Gompertz growth function with Linf=450, gi=0.3, and ti=3
tlL: Total length simulated from a logistic growth function with Linf=450, gninf=0.5, and ti=3
tlR: Total length simulated from a Richards growth function with Linf=450, k=0.5, ti=2, and b=-0.5

Topic(s)

Growth
von Bertalanffy

Examples

str(GrowthData1)
head(GrowthData1)
plot(tlV~age,data=GrowthData1)
plot(tlG~age,data=GrowthData1)
plot(tlL~age,data=GrowthData1)
plot(tlR~age,data=GrowthData1)

FSA documentation built on June 8, 2025, 11:56 a.m.