Imports data from BTS/RITA/Transtats files
Details
Coupon files can be found at https://www.transtats.bts.gov/Fields.asp?gnoyr_VQ=FLM. Ticket files can be found at https://www.transtats.bts.gov/Fields.asp?gnoyr_VQ=FKF. Both files should belong to the same year and same quarter. Note: We do recommend sparklyr to be used for larger sets of data. More information on variables to select and type of files to use can be found here
Examples
if (FALSE) { # \dontrun{
import_db1b(skynet_example("Coupon_2001Q1.csv"), skynet_example("Ticket_2001Q1.csv"))
} # }