Filter GTFS object by route_id

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)
#> 811304 bytes

# keeps entries related to passed route_ids
smaller_gtfs <- filter_by_route_id(gtfs, route_ids)
object.size(smaller_gtfs)
#> 116920 bytes

# drops entries related to passed route_ids
smaller_gtfs <- filter_by_route_id(gtfs, route_ids, keep = FALSE)
object.size(smaller_gtfs)
#> 719032 bytes