Create a records_source Object

The records_source object is used to find extreme records of interest.

Usage

records_source(dataset_name, filter = NULL, new_vars)

Arguments

dataset_name

The name of the source dataset

The name refers to the dataset provided by the source_datasets argument of derive_param_extreme_record().

Default value

none

filter

An unquoted condition for selecting the observations from dataset.

Default value

NULL

new_vars

Variables to add

The specified variables from the source datasets are added to the output dataset. Variables can be renamed by naming the element, i.e., new_vars = exprs(<new name> = <old name>).

For example new_vars = exprs(var1, var2) adds variables var1 and var2 from to the input dataset.

And new_vars = exprs(var1, new_var2 = old_var2) takes var1 and old_var2 from the source dataset and adds them to the input dataset renaming old_var2 to new_var2. Expressions can be used to create new variables (see for example new_vars argument in derive_vars_merged()).

Permitted values

list of expressions created by exprs(), e.g., exprs(ADT, desc(AVAL))

Default value

none

Value

An object of class records_source

See also

derive_param_extreme_record()

Source Objects: basket_select(), censor_source(), death_event, event(), event_joined(), event_source(), flag_event(), query(), tte_source()