transform_from_values: Transform attribute values into measure names

In rolap: Obtaining Star Databases from Flat Tables

Transform attribute values into measure names

Description

The values of an attribute will become measure names. There can only be one measure that will be from where the new defined measures take the values.

Usage

transform_from_values(ft, attribute)

## S3 method for class 'flat_table'
transform_from_values(ft, attribute = NULL)

Arguments

ft	A flat_table object.
attribute	A string, attribute that stores the measures names.

Value

A flat_table object.

See Also

flat_table

Other flat table transformation functions: add_custom_column(), remove_instances_without_measures(), replace_empty_values(), replace_string(), replace_unknown_values(), select_attributes(), select_instances_by_comparison(), select_instances(), select_measures(), separate_measures(), transform_attribute_format(), transform_to_attribute(), transform_to_measure(), transform_to_values()

Examples

ft <- flat_table('iris', iris) |>
  transform_to_values(attribute = 'Characteristic',
                      measure = 'Value',
                      id_reverse = 'id')
ft <- ft |>
  transform_from_values(attribute = 'Characteristic')

rolap documentation built on May 29, 2024, 10:38 a.m.