R: Initial Parameter Values

makeStart {secr}

R Documentation

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)

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.

Value

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

Examples


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

[Package secr version 5.0.0 Index]