displayPar: Display the order of parameters along with fixed values and starting values
Description
This function takes the model spesification arguments to the crwMLE function and displays a table
with the parameter names in the order that crwMLE will use during model fitting. This is useful for specifying
values for the fixPar or theta (starting values for free parameters) arguments.Usage
displayPar(mov.model = ~1, err.model = NULL, stop.model = NULL,
drift.model = FALSE, data, theta, fixPar)
Arguments
mov.model
formula object specifying the time indexed covariates for
movement parameters.
err.model
A 2-element list of formula objects specifying the time
indexed covariates for location error parameters.
stop.model
formula object giving the covariate for the stopping
portion of the model.
drift.model
logical indicating whether or not to include a random
drift component.
data
data.frame object containg telemetry and covariate data. A
SpatialPointsDataFrame object from the package 'sp' will also be accepted. theta
starting values for parameter optimization.
fixPar
Values of parameters which are held fixed to the given value.
Value
- A data frame with the following columns
- ParNamesThe names of the parameters specified by the arguments.
- fixParThe values specified by the
fixPar argument for fixed values of the parameters. In model fitting,
these values will remain fixed and will not be estimated. - thetaIndexThis column provides the index of each element of the theta argument and to which parameter it corresponds.
- thetaStartIf a value is given for the
theta argument it will be placed in this column and its elements will
correspond to the thetaIdx column.
See Also
demo(northernFurSealDemo) for example.