filter_by_route_id: Filter GTFS object by 'route_id'

In gtfstools: General Transit Feed Specification (GTFS) Editing and Analysing Tools

Filter GTFS object by route_id

Description

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

Usage

filter_by_route_id(gtfs, route_id, keep = TRUE)

Arguments

gtfs	A GTFS object, as created by read_gtfs().
route_id	A character vector. The route_ids used to filter the data.
keep	A logical. Whether the entries related to the specified route_ids should be kept or dropped (defaults to TRUE, which keeps the entries).

Value

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

See Also

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

Examples

data_path <- system.file("extdata/spo_gtfs.zip", package = "gtfstools")
gtfs <- read_gtfs(data_path)
route_ids <- c("6450-51", "CPTM L11")

object.size(gtfs)

# keeps entries related to passed route_ids
smaller_gtfs <- filter_by_route_id(gtfs, route_ids)
object.size(smaller_gtfs)

# drops entries related to passed route_ids
smaller_gtfs <- filter_by_route_id(gtfs, route_ids, keep = FALSE)
object.size(smaller_gtfs)

gtfstools documentation built on Oct. 8, 2024, 1:08 a.m.