Merge pull request #102 from pedro-andrade-inpe/master

More updates related to CRAN submission

DESCRIPTION

@@ -1,15 +1,15 @@
 Type: Package
 Package: gtfs2gps
 Title: Converting Transport Data from GTFS Format to GPS-Like Records
-Version: 1.0-4
+Version: 1.0-5
 Authors@R: c(person(given="Rafael H. M.", family="Pereira", email="[email protected]", role="aut", comment = c(ORCID = "0000-0003-2125-7465")),
             person(given="Pedro R.", family="Andrade", email="[email protected]", role=c("aut", "cre"), comment = c(ORCID = "0000-0001-8675-4046")),
             person(given="Joao", family="Bazzo", role="aut", comment = c(ORCID = "0000-0003-4536-5006")),
             person("Ipea - Institue for Applied Economic Research", role = c("cph", "fnd")))
-Date: 2020-02-27
+Date: 2020-03-06
 URL: https://github.com/ipeaGIT/gtfs2gps
 BugReports: https://github.com/ipeaGIT/gtfs2gps/issues
-Description: Convert General Transit Feed Specification (GTFS) data to Global Positioning System (GPS) records in 'data.table' format. It also has some functions to subset GTFS data in time and space and to convert both representations to simple feature format.
+Description: Convert general transit feed specification (GTFS) data to global positioning system (GPS) records in 'data.table' format. It also has some functions to subset GTFS data in time and space and to convert both representations to simple feature format.
 License: MIT + file LICENSE
 Encoding: UTF-8
 LazyData: TRUE

R/gtfs_as_sf.R

@@ -5,11 +5,11 @@
 #' @param gtfs A GTFS data.
 #' @param crs The coordinate reference system represented as an EPSG code.
 #' The default value is 4326 (latlong WGS84)
+#' @return A simple feature (sf) object.
 #' @export
 #' @examples
 #' poa <- read_gtfs(system.file("extdata/saopaulo.zip", package = "gtfs2gps"))
 #' poa_sf <- gtfs_shapes_as_sf(poa)
-#' # plot(sf::st_geometry(poa_sf), lwd = 2)
 gtfs_shapes_as_sf <- function(gtfs, crs = 4326){
   # sort data
   temp_shapes <- data.table::setDT(gtfs$shapes)[order(shape_id, shape_pt_sequence)]
@@ -40,8 +40,6 @@ gtfs_shapes_as_sf <- function(gtfs, crs = 4326){
 #' poa <- read_gtfs(system.file("extdata/poa.zip", package = "gtfs2gps"))
 #' poa_shapes <- gtfs_shapes_as_sf(poa)
 #' poa_stops <- gtfs_stops_as_sf(poa)
-#' # plot(sf::st_geometry(poa_shapes), lwd = 2)
-#' # plot(sf::st_geometry(poa_stops), pch = 20, col = "blue", add = TRUE)
 gtfs_stops_as_sf <- function(gtfs, crs = 4326){
   temp_stops_sf <- sfheaders::sf_point(gtfs$stops, x = "stop_lon", y = "stop_lat", keep = TRUE)
   sf::st_crs(temp_stops_sf) <- crs