setinitial.ds: Set initial values for detection function based on distance...

In mrds: Mark-Recapture Distance Sampling

Set initial values for detection function based on distance sampling

Description

For a given detection function, it computes the initial values for the parameters including scale and shape parameters and adjustment function parameters if any. If there are user-defined initial values only the parameters not specified by the user are computed.

Usage

setinitial.ds(ddfobj, width, initial, point, left)
       sethazard(ddfobj, dmat, width, left, point)

Arguments

ddfobj	distance detection function object
width	half-width of transect or radius of point count
initial	list of user-defined initial values with possible elements: scale, shape, adjustment
point	if TRUE, point count data; otherwise, line transect data
left	left truncation
dmat	xmat from ddfobj

Value

scale	vector of initial scale parameter values
shape	vector of initial shape parameter values
adjustment	vector of initial adjustment function parameter values

Author(s)

Jeff Laake, David L Miller

mrds documentation built on July 9, 2023, 6:06 p.m.