unmarked: computeMPLElambdas – R documentation

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computeMPLElambdas

Compute the penalty weight for the MPLE penalized likelihood method

This function computes the weight for the MPLE penalty of Moreno & Lele (2010).

computeMPLElambda(formula, data, knownOcc=numeric(0), starts,
method="BFGS",engine=c("C", "R"))

`formula`	Double right-hand side formula describing covariates of detection and occupancy in that order.
`data`	An `unmarkedFrameOccu` object
`knownOcc`	Vector of sites that are known to be occupied. These should be supplied as row numbers of the y matrix, eg, c(3,8) if sites 3 and 8 were known to be occupied a priori.
`starts`	Vector of parameter starting values.
`method`	Optimization method used by `optim`.
`engine`	Either "C" or "R" to use fast C++ code or native R code during the optimization.

See occuPEN for details and examples.

The computed lambda.

Rebecca A. Hutchinson

Moreno, M. and S. R. Lele. 2010. Improved estimation of site occupancy using penalized likelihood. Ecology 91: 341-346.