transform_to_attribute: Transform to attribute

In rolap: Obtaining Star Databases from Flat Tables

Transform to attribute

Description

Transform measures into attributes. We can indicate if we want all the numbers in the result to have the same length and the number of decimal places.

Usage

transform_to_attribute(ft, measures, width, decimal_places, k_sep, decimal_sep)

## S3 method for class 'flat_table'
transform_to_attribute(
  ft,
  measures,
  width = 1,
  decimal_places = 0,
  k_sep = ",",
  decimal_sep = "."
)

Arguments

ft	A flat_table object.
measures	A vector of strings, measure names.
width	An integer, string length.
decimal_places	An integer, number of decimal places.
k_sep	A character, indicates thousands separator.
decimal_sep	A character, indicates decimal separator.

Details

If a number > 1 is specified in the width parameter, at least that length will be obtained in the result, padded with blanks on the left.

Value

ft 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_from_values(), transform_to_measure(), transform_to_values()

Examples

ft <- flat_table('iris', iris) |>
  transform_to_attribute(
    measures = "Sepal.Length",
    width = 3,
    decimal_places = 2
  )

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