as_dt_gtfs              Coerce lists and GTFS objects from other
                        packages into gtfstools-compatible GTFS objects
build_graph             Build a transit network graph
combine_nearby_stops    Combine nearby stops
convert_seconds_to_time
                        Convert seconds after midnight to time strings
convert_sf_to_shapes    Convert a simple feature object into a 'shapes'
                        table
convert_shapes_to_sf    Convert 'shapes' table to simple feature object
                        (deprecated)
convert_stops_to_sf     Convert 'stops' table to simple feature object
                        (deprecated)
convert_stops_to_shapes
                        Convert stops into shapes
convert_time_to_seconds
                        Convert time fields to seconds after midnight
crop_gtfs               Crop a GTFS object to a spatial extent
download_validator      Download MobilityData's GTFS validator
filter_by_agency_id     Filter GTFS object by 'agency_id'
filter_by_date          Filter GTFS object by date
filter_by_period        Filter GTFS object by period
filter_by_route_id      Filter GTFS object by 'route_id'
filter_by_route_type    Filter GTFS object by 'route_type' (transport
                        mode)
filter_by_service_id    Filter GTFS object by 'service_id'
filter_by_sf            Filter a GTFS object using a simple features
                        object (defunct)
filter_by_shape_id      Filter GTFS object by 'shape_id'
filter_by_spatial_extent
                        Filter a GTFS object using a spatial extent
filter_by_stop_id       Filter GTFS object by 'stop_id'
filter_by_time_of_day   Filter GTFS object by time of day
filter_by_trip_id       Filter GTFS object by 'trip_id'
filter_by_weekday       Filter GTFS object by weekday
fix_gtfs                Fix common problems in GTFS feeds
frequencies_to_stop_times
                        Convert frequencies to stop times
get_active_services     Get active services
get_calendar_overlap    Get calendar overlap
get_children_stops      Get children stops recursively
get_dates               Get service dates
get_dwell_time          Get dwell time
get_parent_station      Get parent stations recursively
get_route_frequency     Get route frequency
get_route_geometry      Get route geometry
get_route_speed         Get route speed
get_route_timetable     Get route timetable
get_shape_length        Get shape length
get_shapes_geometry     Get the 'shapes' table with spatial geometry
get_start_and_end_times
                        Get start and end times
get_stop_distances      Get distances between stops
get_stop_frequency      Get stop frequency
get_stop_times_patterns
                        Get stop times patterns
get_stop_timetable      Get stop timetable
get_stops               Get stops
get_stops_geometry      Get the 'stops' table with spatial geometry
get_summary             Get a summary of a GTFS feed
get_trip_duration       Get trip duration
get_trip_geometry       Get trip geometry
get_trip_length         Get trip length
get_trip_segment_duration
                        Get trip segments' duration
get_trip_speed          Get trip speed
get_vkt                 Get vehicle-kilometres travelled
get_vmt                 Get vehicle-miles travelled
interpolate_shape_dist_traveled
                        Interpolate the distances travelled along
                        shapes
interpolate_stop_times
                        Interpolate missing stop times
list_validator_versions
                        List MobilityData's GTFS validator versions
merge_gtfs              Merge GTFS files
read_gtfs               Read GTFS files
remove_duplicates       Remove duplicated entries
remove_unused_ids       Remove unused ids
set_dwell_time          Set dwell time
set_max_speed           Set trip maximum speed
set_min_dwell_time      Set a minimum dwell time
set_route_frequency     Set route frequency
set_route_speed         Set route average speed
set_trip_speed          Set trip average speed
stop_times_to_frequencies
                        Convert stop times to frequencies
validate_gtfs           Validate GTFS feed
write_gtfs              Write GTFS files
