LP1: Calculate Segment Length Based on Specific Time Period

In GaryTruong/whiskR: Stable Isotope Analysis for Whisker Samples

Description

LP1 allows you calculate where to cut to represent a specific time period. It uses the discrete step by step von Bertanlanffy equation solved for L(p-1)

Usage

LP1(L, L.asym, Time, k)

Arguments

L	numeric; length of the sample
L.asym	numeric; asymptotic length
Time	numeric; time period in days to be represented by the cut segment
k	numeric; growth coefficient, calculate using the function k

Value

The value returned is the location in millimetres, along the sample, to be cut to obtain a segment representing the number of days indicated by the Time argument

Author(s)

The function was written by Gary Truong with collaboration from Ben Walker and Anna Lewis from the University of New South Wales

References

Hall-Aspland, S. A., Rogers, T. L., & Canfield, R. B. (2005). Stable carbon and nitrogen isotope analysis reveals seasonal variation in the diet of leopard seals. Marine Ecology Progress Series, 305, 249-259.

Examples

LP1(L = 100, L.asym = 150, Time = 28, k = 0.0126)

GaryTruong/whiskR documentation built on Sept. 25, 2020, 1:41 p.m.