GTFS object constructor

Creates a GTFS object. Mostly useful for package authors who may want to either create gtfs objects in their packages or create subclasses of the main gtfs class. The usage of this function assumes some knowledge on gtfs objects, thus inputs are not extensively checked. See assert_gtfs for more thorough checks.

new_gtfs(x, subclass = character(), ...)

Arguments

x

A GTFS-like object (either a GTFS object or a named list). Each element must represent a distinct GTFS text file.

subclass

A character vector. Subclasses to be assigned to the gtfs object.

...

Name-value pairs. Additional attributes.

Value

A GTFS object: a named list of data frames, each one corresponding to a distinct GTFS text file, with gtfs and list classes.

See also

Other constructors: assert_gtfs()

Examples

gtfs_path <- system.file("extdata/ggl_gtfs.zip", package = "gtfsio")

tmpdir <- tempfile(pattern = "new_gtfs_example")
zip::unzip(gtfs_path, exdir = tmpdir)

agency <- data.table::fread(file.path(tmpdir, "agency.txt"))
stops <- data.table::fread(file.path(tmpdir, "stops.txt"))
routes <- data.table::fread(file.path(tmpdir, "routes.txt"))
trips <- data.table::fread(file.path(tmpdir, "trips.txt"))
stop_times <- data.table::fread(file.path(tmpdir, "stop_times.txt"))
calendar <- data.table::fread(file.path(tmpdir, "calendar.txt"))

txt_files <- list(
  agency = agency,
  stops = stops,
  routes = routes,
  trips = trips,
  stop_times = stop_times,
  calendar = calendar
)

gtfs <- new_gtfs(txt_files)

class(gtfs)
#> [1] "gtfs" "list"
names(gtfs)
#> [1] "agency"     "stops"      "routes"     "trips"      "stop_times"
#> [6] "calendar"