pivot-sciences/osrm

:twisted_rightwards_arrows: Shortest Paths and Travel Time from OpenStreetMap with R

osrm R package

Interface Between R and the OpenStreetMap-Based Routing Service OSRM

Description

OSRM is a routing service based on OpenStreetMap data. See http://project-osrm.org/ for more information. A public API exists but one can run its own instance. This package allows to compute distance (travel time and kilometric distance) between points and travel time matrices.

This package relies on the usage of a running OSRM service (tested with version 5.0.0 of the OSRM API). By default, this service is the OSRM demo server (http://router.project-osrm.org/). If you plan to use the OSRM demo server you should read the OSRM API Usage Policy. You should also take into account "that there are no guarantees regarding availability, stability or correctness of results. It's server to demonstrate OSRM, not a production-ready API." Demo Server To change the OSRM server, change the osrm.server option: options(osrm.server = "http://address.of.the.server/"). To change the profile (driving is set by default), use the osrm.profile option: options(osrm.profile = "name.of.the.profile")

Features

• osrmTable Get travel time matrices between points.

• osrmRoute Get the shortest path between two points.

• osrmTrip Get the travel geometry between multiple unordered points.

• osrmIsochrone Get a SpatialPolygonsDataFrame of isochrones.

Demo

osrmTable

library(osrm)
# Load data
data("com")
# Travel time matrix
distCom <- osrmTable(loc = com[1:50, c("name","lon","lat")])
# First 5 rows and columns
distCom$duration[1:5,1:5]

	Bethune	Annezin	Denderleeuw	Haaltert	Locon
Bethune	0.00	5.40	95.10	91.60	7.50
Annezin	4.90	0.00	98.30	94.70	7.10
Denderleeuw	94.20	97.30	0.00	10.40	93.50
Haaltert	90.80	93.80	10.40	0.00	90.00
Locon	7.00	6.90	93.50	90.00	0.00

osrmRoute

library(osrm)
# Load data
data("com")

# Travel path between SpatialPointsDataFrame
route <- osrmRoute(src = src[1,], dst = dst[1,], sp = TRUE)
if(require("cartography")){
  osm <- getTiles(spdf = route, crop = TRUE, type = "osmtransport")
  tilesLayer(osm)
  plot(route, lwd = 5, col = "blue", add = TRUE)
  plot(src[1,], pch = 20, col = "green", cex = 5, add = TRUE)             
  plot(dst[1,], pch = 20, col = "red", cex = 5, add = TRUE) 
  dev.off()
}

osrmTrip

library(osrm)
# Load data
data("com")

# Get a trip with a SpatialPointsDataFrame
trips <- osrmTrip(loc = src)

# Map
if(require("cartography")){
  osm <- getTiles(spdf = trips[[1]]$trip, crop = TRUE, type = "osmtransport")
  tilesLayer(osm)
  plot(trips[[1]]$trip, add = TRUE, col = 1:5, lwd = 5)
  plot(src, pch = 21, bg = "red", cex = 2, col = "black", add = TRUE)
}

osrmIsochrone

library(osrm)
# Load data
data("com")

# Get isochones with a SpatialPointsDataFrame, custom breaks
iso <- osrmIsochrone(loc = src[6,], breaks = seq(from = 0,to = 30, by = 5))

# Map
if(require("cartography")){
  osm <- getTiles(spdf = iso, crop = TRUE, type = "osmtransport")
  tilesLayer(osm)
  breaks <- sort(c(unique(iso$min), max(iso$max)))
  pal <- paste(carto.pal("taupe.pal", length(breaks)-1), "95", sep="")
  cartography::choroLayer(spdf = iso, df = iso@data,
                          var = "center", breaks = breaks,
                          border = "grey50", lwd = 0.5, col = pal,
                          legend.pos = "topleft",legend.frame = TRUE, 
                          legend.title.txt = "Driving Time\nto Renescure\n(min)", 
                          add = TRUE)
  plot(src[6,], cex = 2, pch = 20, col ="red", add=T)
  text(src[6,], label = "Renescure", pos = 3)
}

Installation

• Development version on GitHub

require(devtools)
devtools::install_github("rCarto/osrm")

• Stable version on CRAN

install.packages("osrm")

Community Guidelines

One can contribute to the package through pull requests and report issues or ask questions here.