set_attribute_definition_function {when}

Set attribute definition function

Description

Each attribute is defined by a function that adds a column to a table based on the parameter that contains the date or time. This function sets the definition function for the attribute whose name is given.

Usage

set_attribute_definition_function(td, name, f)

## S3 method for class 'when'
set_attribute_definition_function(td, name = NULL, f = NULL)

Arguments

td

A when object.

name

A string, attribute name.

f

A function.

Value

A when object.

See Also

Other dimension definition: define_characteristics(), define_instances(), get_attribute_definition_function(), get_day_part(), get_week_date_range(), select_date_levels(), select_day_level(), select_month_level(), select_quarter_level(), select_semester_level(), select_time_level(), select_week_level(), select_year_level(), set_day_part(), when()

Examples

f <- function(table, values, ...) {
  table[['year']] <- 'Not defined'
  table
}

wd <- when() |>
  set_attribute_definition_function(name = "year", f)