read_gtfs: Get and validate dataframes of General Transit Feed...

In r-gtfs/trread: Read, Validate, and Analyze Files in the General Transit Feed Specification

Description

This function reads GTFS text files from a local or remote zip file. It also validates the files against the GTFS specification by file, requirement status, and column name The data are returned as a list of dataframes and a validation object, which contains details on whether all required files were found, and which required and optional columns are present.

Usage

read_gtfs(path, local = FALSE, quiet = TRUE, frequency = FALSE)

Arguments

path	Character. url link to zip file OR path to local zip file. if to local path, then option local must be set to TRUE.
local	Boolean. If the paths are searching locally or not. Default is FALSE (that is, urls).
quiet	Boolean. Whether to see file download progress and files extract. FALSE by default.
frequency	Boolean. Whether to add frequency/headway calculations to the gtfs object

Value

A GTFS object. That is, a list of dataframes of GTFS data.

Examples

library(dplyr)
u1 <- "https://github.com/r-transit/trread/raw/master/inst/extdata/sample-feed-fixed.zip"
sample_gtfs <- read_gtfs(u1)
attach(sample_gtfs)
#list routes by the number of stops they have
routes_df %>% inner_join(trips_df, by="route_id") %>%
  inner_join(stop_times_df) %>% 
    inner_join(stops_df, by="stop_id") %>% 
      group_by(route_long_name) %>%
        summarise(stop_count=n_distinct(stop_id)) %>%
          arrange(desc(stop_count))

r-gtfs/trread documentation built on Aug. 30, 2021, 12:32 p.m.