For tables with data with hierarchical categories, metadata containing hierarchy level descriptions is used to extract categories at a specified level of hierarchy only.
categories_for_level(data, column_name, level = NA, strict = FALSE,
remove_duplicates = TRUE)data table object as returned from get_cansim()
the quoted name of the column to extract categories from
the hierarchy level depth to which to extract categories, where 0 is top category
(default FALSE) when TRUE will only extract that specific hierarchy level
(default TRUE) When set to TRUE higher level grouping categories already captured by lower level hierarchy data will be removed
A vector of categories