Functions to get or set the optional, user-defined R objects attached to a model object.
Usage
ddm_opts(object, ...) <- value
# S3 method for class 'drift_dm'
ddm_opts(object, ..., eval_model = FALSE) <- value
ddm_opts(object, ...)
# S3 method for class 'drift_dm'
ddm_opts(object, ...)Arguments
- object
an object of type drift_dm.
- ...
additional arguments passed down to the specific method.
- value
an arbitrary R object.
- eval_model
logical, indicating if the model should be re-evaluated or not after attaching the arbitrary R object to the model (see re_evaluate_model). Default is
FALSE.
Value
For ddm_opts() the optional R object that was once supplied by the user, or
NULL.
For ddm_opts<-() the updated drift_dm object.
Details
When deriving model predictions, the model's component functions
(see comp_funs()) are evaluated and the returned values are
passed forward to dedicated numerical methods implemented in dRiftDM.
To allow users to access arbitrary R objects within their custom component
functions, models may contain a ddm_opts entry (see also
drift_dm() and the end of
vignette("customize_ddms", "dRiftDM") for an example).
ddm_opts() is a generic accessor function, and ddm_opts<-() is a
generic replacement function. The default methods get and set the optional
R object.
Examples
# get a pre-built model for demonstration
a_model <- ratcliff_dm()
ddm_opts(a_model) <- "Hello World"
ddm_opts(a_model)
#> [1] "Hello World"