as_tidygtfs             Convert another gtfs like object to a tidygtfs
                        object
cluster_stops           Cluster nearby stops within a group
empty_strings_to_na     Convert empty strings ("") to NA values in all
                        gtfs tables
filter_feed_by_area     Filter a gtfs feed so that it only contains
                        trips that pass a given area
filter_feed_by_date     Filter a gtfs feed so that it only contains
                        trips running on a given date
filter_feed_by_stops    Filter a gtfs feed so that it only contains
                        trips that pass the given stops
filter_feed_by_trips    Filter a gtfs feed so that it only contains a
                        given set of trips
filter_stop_times       Filter a 'stop_times' table for a given date
                        and timespan.
filter_stops            Get a set of stops for a given set of service
                        ids and route ids
get_route_frequency     Get Route Frequency
get_route_geometry      Get all trip shapes for a given route and
                        service
get_stop_frequency      Get Stop Frequency
get_trip_geometry       Get all trip shapes for given trip ids
gtfs_as_sf              Convert stops and shapes to Simple Features
gtfs_duke               Example GTFS data
gtfs_transform          Transform coordinates of a gtfs feed
interpolate_stop_times
                        Interpolate missing stop_times linearly
na_to_empty_strings     Convert NA values to empty strings ("")
plot.tidygtfs           Plot GTFS stops and trips
print.tidygtfs          Print a GTFS object
raptor                  Calculate travel times from one stop to all
                        reachable stops
read_gtfs               Read and validate GTFS files
route_type_names        Dataframe of route type id's and the names of
                        the types (e.g. "Bus")
set_servicepattern      Calculate service pattern ids for a GTFS feed
sf_as_tbl               Convert stops and shapes from sf objects to
                        tibbles
shapes_as_sf            Convert shapes into Simple Features Linestrings
stop_distances          Calculate distances between a given set of
                        stops
stop_group_distances    Calculates distances among stop within the same
                        group column
stops_as_sf             Convert stops into Simple Features Points
summary.tidygtfs        GTFS feed summary
travel_times            Calculate shortest travel times from a stop to
                        all reachable stops
validate_gtfs           Validate GTFS feed
write_gtfs              Write a tidygtfs object to a zip file
