Summarize PSRC travel survey vmt rates
Usage
psrc_hts_vmtrate(hts_data, group_vars = NULL, incl_na = TRUE)
Arguments
- hts_data
the data object, a list with either data.table or NULL for hh, person, day, trip, vehicle
- group_vars
vector with names of one or more grouping variables, in order
- incl_na
logical, whether NA should be included in results–including calculated shares