makeStart: Initial Parameter Values

Description

makeStart() wraps the code previously internal to secr.fit(). It will not usually be called directly.

Usage

makeStart(start = NULL, parindx, capthist, mask, detectfn, link, 
    details = NULL, fixed = NULL, CL = FALSE, anypoly = FALSE, 
    anytrans = FALSE, alltelem = FALSE, sighting = FALSE)

Value

Numeric vector with one value for each coefficient (beta parameter) in model.

Arguments

start: optional starting values as described for secr.fit
parindx: list with one component per real parameter giving corresponding indices of coefficients (beta parameters)
capthist: capthist object including capture data and detector (trap) layout
mask: mask object or (for a multi-session analysis) a list of mask objects, one for each session
detectfn: integer code or character string for shape of detection function 0 = halfnormal, 1 = hazard rate etc. -- see detectfn
link: list of link function names ("log", "logit", "identity") for each real parameter
details: list of additional arguments (see secr.fit)
fixed: list with optional components corresponding to real parameters giving the scalar value to which the parameter is to be fixed
CL: logical, if true then model does not include density
anypoly: logical, TRUE if any polygon detectors
anytrans: logical, TRUE if any transect detectors
alltelem: logical, TRUE if any telemetry detectors
sighting: logical, TRUE if any sighting data

Details

If `start' is a previously fitted model then only `start' and `parindx' are required.

Examples

Run this code


makeStart(secrdemo.0, list(D = 1, g0 = 2:3, sigma = 4))