Compute percentages changes across time
Arguments
- df_flr
Dataframe input, output of
PrjCompPPTS::ff_ppts_lrce_flr
- ar_it_years_chg
Array of integer, years to select for computing changes
- verbose
Boolean print details
- ls_chg_year
List of Array each array with start and end date and list contains new variable names
Author
Fan Wang, http://fanwangecon.github.io