history_matrix_pc8: History matrix of PC8 product codes
Description
Provides a dataframe which contains all PC8 product codes and their history in a given time period.
Usage
history_matrix_pc8(b, e, progress = TRUE)
Value
A data frame that contains all PC8 product codes and their history over time for the demanded time period. This dataset is the basis for the main function harmonize_pc8() and can be obtained therewith as well. The following table offers an overview of all provided variables.
Variable
Explanation
PC8_xxxx
character; a specific PC8 code in a given year
flag
numeric; integer from 0 to 3; 1 indicates that this code remained the same in notation over the whole time period but was split or merged in addition; 2 indicates that this code is either new or was dropped during the period of interest
flagyear
numeric; indicates the first year in which the flag was set
Arguments
b
first year of interest
e
last year of interest
progress
logical, determines whether progress is printed in console or not.