.nlmP
From geoR v1.8-1
by Paulo Ribeiro Jr
Adapts nlm for Constraints in the Parameter Values
This function adapts the R function nlm to allow for
constraints (upper and/or lower bounds) in the values of the parameters.
Usage
.nlmP(objfunc, params, lower=rep(-Inf, length(params)),
upper=rep(+Inf, length(params)), …)Arguments
- objfunc
the function to be minimized.
- params
starting values for the parameters.
- lower
lower bounds for the variables. Defaults to \(-Inf\).
- upper
upper bounds for the variables. Defaults to \(-Inf\).
- …
further arguments to be passed to the function
nlm.
Details
Constraints on the parameter values are internally imposed by using exponential, logarithmic, and logit transformation of the parameter values.
Value
The output is the same as for the function nlm.
References
Further information on the package geoR can be found at: http://www.leg.ufpr.br/geoR.
See Also
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