Description Usage Arguments Details Value Examples
View source: R/2DLTfunctions.r
Returns product of perp dist det prob px() and animal dbn pi.x
1 | p.pi.x(x, b, hr, ystart, pi.x, logphi, w)
|
x |
scale or vector; perp. distance observations |
hr |
hazard rate function |
ystart |
max forward distance at which could possibly detect animal (see details). |
pi.x |
perpendicular distance density distribution |
w |
perpendicular truncation distance. |
y |
scalar or vector; forward distance observations |
pars |
c(b,logphi); hazard rate and density log-parameters in a vector (see details). |
length.b |
length of the hazard rate parameter vector |
Must to ensure the hazard function has decayed to (very close to) zero by ystart
.
The parameter vector, pars
, must be passed in with two parameters for the hazard rate first,
then two parameters for perpendicular density gradient π(x) i.e. c(b,logphi)
.
negative log likelihood for forward distance, y
and perpendicular distance x
.
1 | p.pi.x(x,b,hr,ystart,pi.x,logphi,w)
|
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