A list. The first component gives the distance along the
transect of detected individuals. The second gives the parent
locations. The third identifies which parent location generated
each detected individual. The fourth gives the distance from
the transect centre line of the detection location. The fifth
provides observed sibling information.
Arguments
pars
A vector containing elements named D.2D,
kappa, and sigma, providing values of animal
density (animals per square km), average duration of surface
phase (s), and dispersion (km).
d
The length of the transect flown (in km).
w
The distance from the transect to which detection of
individuals on the surface is certain. This is equivalent to
the half-width of the detection zone.
b
The distance from the transect to the edge of the area of
interest. Conceptually, the distance between the transect and
the furthest distance a whale could be on the passing of the
first camera and plausibly move into the detection zone by the
passing of the second camera.
l
The lag between cameras (in seconds).
tau
Mean dive-cycle duration (in seconds).
parents
An optional vector containing the parent locations
for all animals within the area of interest, given in distance
along the transect (in km). If this is provided, then the
parameter D.2D is not required in pars. If this
is not provided, then parent locations are generated from a
homogeneous Poisson point process with intensity D.2D.