Imports data from BTS/RITA/Transtats website
File order doesn't matter, but it is recommended to name the files using the following
syntax: "Coupon YearQuarter.csv", "Ticket YearQuarter.csv", "T100 Year".
Note: We do recommend sparklyr to be used for larger sets of data.
Usage
netImport(x = NULL, y = NULL)
Arguments
x
First csv file to be imported, in case of DB1B database, or in case of using
the T-100 database, the only file to be included.