gtfstools (version 1.1.0)

filter_by_route_type: Filter GTFS object by route_type (transport mode)

Description

Filters a GTFS object by route_types, keeping (or dropping) the relevant entries in each file.

Usage

filter_by_route_type(gtfs, route_type, keep = TRUE)

Value

The GTFS object passed to the gtfs parameter, after the filtering process.

Arguments

gtfs

A GTFS object, as created by read_gtfs().

route_type

An integer vector. The route_types used to filter the data.

keep

A logical. Whether the entries related to the specified route_types should be kept or dropped (defaults to TRUE, which keeps the entries).

Route types

Valid options are:

• 0 - Tram, Streetcar, Light rail. Any light rail or street level system within a metropolitan area.

• 1 - Subway, Metro. Any underground rail system within a metropolitan area.

• 2 - Rail. Used for intercity or long-distance travel.

• 3 - Bus. Used for short- and long-distance bus routes.

• 4 - Ferry. Used for short- and long-distance boat service.

• 5 - Cable tram. Used for street-level rail cars where the cable runs beneath the vehicle, e.g., cable car in San Francisco.

• 6 - Aerial lift, suspended cable car (e.g., gondola lift, aerial tramway). Cable transport where cabins, cars, gondolas or open chairs are suspended by means of one or more cables.

• 7 - Funicular. Any rail system designed for steep inclines.

• 11 - Trolleybus. Electric buses that draw power from overhead wires using poles.

• 12 - Monorail. Railway in which the track consists of a single rail or a beam.

See Also

Other filtering functions: filter_by_agency_id(), filter_by_route_id(), filter_by_service_id(), filter_by_sf(), filter_by_shape_id(), filter_by_stop_id(), filter_by_time_of_day(), filter_by_trip_id(), filter_by_weekday()

Examples

# read gtfs
data_path <- system.file("extdata/spo_gtfs.zip", package = "gtfstools")
gtfs <- read_gtfs(data_path)

object.size(gtfs)

# keeps entries related to passed route_types
smaller_gtfs <- filter_by_route_type(gtfs, route_type = 1)
object.size(smaller_gtfs)

# drops entries related to passed route_types
smaller_gtfs <- filter_by_route_type(gtfs, route_type = 1, keep = FALSE)
object.size(smaller_gtfs)