HBhr: Hayes+Buckland hazard rate model.
In david-borchers/LT2D: Line transect estimation in two dimensions

Evaluates the Hayes and Buckland (1983) hazard rate model (HB model) as parameterised on page 36 of that paper.

1	HBhr(x, theta)

`x`	perpendicular distance(s).
`theta`	parameter vector with theta[1] being HB model parameter a1 and theta[2] being b.

g(x)=1-exp(-a1*x^(-(b-1))).

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xx=seq(0,0.03,length=100)
p=HBhr(xx,h1.to.HB(c(-7, 0.85)))
plot(xx,p,type="l",xlab="Perpendicular distance (x)",ylab="p(x)",ylim=c(0,1))

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

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