get_unknown_values {rolap}

Get unknown attribute values

Description

Obtain the instances that have an empty or unknown value in any given attribute. If no attribute is given, all are considered.

Usage

get_unknown_values(ft, attributes, col_as_vector)

## S3 method for class 'flat_table'
get_unknown_values(ft, attributes = NULL, col_as_vector = NULL)

Arguments

ft

A flat_table object.

attributes

A vector of strings, attribute names.

col_as_vector

A string, name of the column to include a vector of values.

Details

If a name is indicated in the col_as_vector parameter, it includes a column with the data in vector form to be used in other functions.

Value

A tibble with unknown values in instances.

See Also

star_database

Other flat table definition functions: as_star_database(), flat_table(), get_table(), get_unknown_value_defined(), read_flat_table_file(), read_flat_table_folder()

Examples

iris2 <- iris
iris2[10, 'Species'] <- NA
instances <- flat_table('iris', iris2) |>
  get_unknown_values()