modifyModel in package modifyModel moves a model from one parameter value to
another.modifyModel(model, param,...)
## S3 method for class 'L2ParamFamily,ParamFamParameter':
modifyModel(model,param,
.withCall = TRUE, .withL2derivDistr = TRUE, ...)
## S3 method for class 'L2LocationFamily,ParamFamParameter':
modifyModel(model,param, ...)
## S3 method for class 'L2ScaleFamily,ParamFamParameter':
modifyModel(model,param, ...)
## S3 method for class 'L2LocationScaleFamily,ParamFamParameter':
modifyModel(model,
param, ...)
## S3 method for class 'GammaFamily,ParamFamParameter':
modifyModel(model,param, ...)
## S3 method for class 'ExpScaleFamily,ParamFamParameter':
modifyModel(model,param, ...)L2ParamFamily --- the model to move.ParamFamParameter --- the parameter to move to.fam.call be updated?L2derivDistr be updated?model with moved
parameters.modifyModel is merely used internally for moving
the model along modified parameter values during a model
fit.
It generally simply copies the original model and only
modifies the affected slots, i.e.
distribution, the distribution of the observations,
param, the parameter,
L2deriv, the L2-derivative at the parameter,
L2FisherInfo, the Fisher information at the parameter,
the symmetry slots distrSymm, L2derivSymm, and
L2derivDistrSymm,
and, finally, L2derivDistr the (marginal) distribution(s)
of the L2derivative. By default, also slot fam.call is updated.
In case model is of class L2LocationFamily,
L2ScaleFamily, or L2LocationScaleFamily,
symmetry slots are updated to be centered about the
median of the (central) distribution (assuming the latter is
symmetric about the median); as an intermediate step, these methods
call the general modifyModel-method for signature L2ParamFamily;
in this call, however, slot fam.call is not updated (this is
the reason for argument .withCall); this is then
done in the individual parts of the corresponding method.