getTargomoPolygons: Add Targomo Polygons to a Leaflet Map

In TargomoR: Interface to the 'Targomo' API

Description

Functions for retrieving isochrone polygons from the Targomo API and adding drawing them on a leaflet map.

Usage

getTargomoPolygons(source_data = NULL, source_lat = NULL,
  source_lng = NULL, options = targomoOptions(),
  api_key = Sys.getenv("TARGOMO_API_KEY"),
  region = Sys.getenv("TARGOMO_REGION"), config = list(),
  verbose = FALSE, progress = FALSE, timeout = NULL)

drawTargomoPolygons(map, polygons, drawOptions = polygonDrawOptions(),
  group = NULL, ...)

addTargomoPolygons(map, source_data = NULL, source_lng = NULL,
  source_lat = NULL, options = targomoOptions(),
  drawOptions = polygonDrawOptions(), group = NULL, ...,
  api_key = Sys.getenv("TARGOMO_API_KEY"),
  region = Sys.getenv("TARGOMO_REGION"), config = list(),
  verbose = FALSE, progress = FALSE, timeout = NULL)

Arguments

source_data	The data object from which source ppoints are derived.
source_lng, source_lat	Vectors/one-sided formulas of longitude and latitude.
options	A list of targomoOptions to call the API.
api_key	Your Targomo API key - defaults to the TARGOMO_API_KEY ennvironment variable
region	Your Targomo region - defaults to the TARGOMO_REGION environment variable
config	Config options to pass to httr::POST e.g. proxy settings
verbose	Whether to print out information about the API call.
progress	Whether to show a progress bar of the API call.
timeout	Timeout in seconds (leave NULL for no timeout/curl default).
map	A leaflet map.
polygons	A polygons dataset returned by getTargomoPolygons, for drawing
drawOptions	A list of polygonDrawOptions to determine how to show the resulting polygons on the map.
group	The leaflet map group to add the polygons to. A single group is used for all the polygons added by one API call.
...	Further arguments to pass to addPolygons

Value

For 'get*', an object of class "sf" containing the polygons. For 'draw*' and 'add*', the leaflet map returned with the polygons drawn on.

Examples

# load leaflet package
library(leaflet)
l <- leaflet()

# get the polygons
p <- getTargomoPolygons(source_lat = 51.5007, source_lng = -0.1246,
                        options = targomoOptions(travelType = "bike"))

# draw them on the map
l %>% drawTargomoPolygons(polygons = p, group = "BigBenBike")

# note could combine get... and draw... into one with add...

TargomoR documentation built on Dec. 7, 2019, 1:07 a.m.