Description Usage Arguments Value References
View source: R/2DLTfunctions.r
Inverse power hazard function, as per Borchers and Langrock (in press): Has form h(y,x)=theta[1]*exp(-(x^theta[3]+y^theta[3])/(theta[2]^theta[3])).
1 | ep1(y, x, b)
|
y |
Forward distance |
x |
perpendicular distance |
b |
parameter vector, where |
probability of detection given that an animal is availabe at location x,y #'@examples b=c(1, -4, 1) ep1(0.5,0.5,b=b) yy=seq(0,0.03,length=100);xx=rep(0,100) hh=ep1(yy,xx,b=b) plot(yy,hh,type="l")
Borchers, D.L and Langrock, R."Double-observer line transect surveys with Markov- modulated Poisson process models for animal availability" Biometrics (in press).
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