lethality_curve: Produce a P(Lethality) ~ Speed curve

In ericmkeen/shipstrike: Utilities for spatially- and temporally-explicit predictions of whale-ship collisions

Produce a P(Lethality) ~ Speed curve

Description

This function returns the Probability of Lethality for a range of speeds based on a logistic function of form: P(Lethality) = asymptote/ (1 + exp(-1*(c1 + (c2*speeds)))). The defaults are the values used in Keen et al. (2023) for large ships > 180m.

Usage

lethality_curve(
  speeds = seq(0, 30, length = 1000),
  c1 = -1.241241,
  c2 = 0.2712432,
  asymptote = 1
)

Arguments

speeds	A vector of speeds at which to predict P(Lethality).
c1	First parameter
c2	Second parameter
asymptote	Upper asymptote of the function.

Value

A data.frame.

ericmkeen/shipstrike documentation built on May 21, 2023, 7:05 a.m.