phat: Calculate effective strip width

In david-borchers/LT2D: Line transect estimation in two dimensions

Description

Calculate effective strip width, \hat p for a given hazard rate function and perpendicular density distribution.

Usage

phat(fit = NULL, w = NULL, hr = NULL, b = NULL, ystart = NULL,
  pi.x = NULL, logphi = NULL)

Arguments

w	truncation distance
hr	function describing the hazard rate
b	hazard rate parameter vector
ystart	maximum forward distance
pi.x	function describing the perpendicular distance density distribution
logphi	parameters for pi.x (some maybe logged)
fit=NULL	alternatively just pass in an object resulting from a call of fityx.

Value

Effective strip widith \hat p

Examples

phat(w=1,hr=h2,b=log(c(0.75,1)),ystart=4,pi.x=pi.norm,logphi=c(0.5,log(0.2)))

david-borchers/LT2D documentation built on Aug. 17, 2020, 1:37 a.m.