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. This package allows to compute routes, trips, isochrones and travel distances matrices (travel time and kilometric distance).

This package relies on the usage of a running OSRM service (tested with v5.23.0 of OSRM).

You can run your own instance of OSRM following guidelines provided here. The simplest solution is probably the one based on docker containers.

:warning: You must be careful using the OSRM demo server and read the about page of the service:
> One request per second max. No scraping, no heavy usage.

:heavy_exclamation_mark: To consider when using OSRM:
> “Most of the previously active core devs have either moved on to new roles, or are simply busy on different projects (…)”

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 polygons of isochrones.

Demo

osrmTable

library(osrm)

data("berlin")
# Travel time matrix
distA <- osrmTable(loc = apotheke.sf[1:5,])
distA$durations

osrmRoute

library(sf)
library(maptiles)
# Route
route <- osrmRoute(src = apotheke.sf[74,], dst = apotheke.sf[55,],
                   overview = "full", returnclass = "sf")
# Display
osm <- get_tiles(x = route, crop = TRUE, zoom = 13)
png("img/route.png", width = 693, height = 263)
par(mar = c(0,0,0,0))
plot_tiles(osm)
plot(st_geometry(route), lwd = 4, add = TRUE)
plot(st_geometry(route), lwd = 1, col = "white", add = TRUE)
plot(st_geometry(apotheke.sf[c(74,55),]), pch = 20, col = "red", add = TRUE)
mtext(get_credit("OpenStreetMap"), side = 1, line = -1, cex = .9, adj = .99)
dev.off()

osrmTrip

# Trip 
trips <- osrmTrip(loc = apotheke.sf[10:20,], returnclass="sf")
trip <- trips[[1]]$trip
# Display
osm2 <- get_tiles(x = trip, crop = TRUE, zoom = 11)
png("img/trip.png", width = 499, height = 420)
par(mar = c(0,0,0,0))
plot_tiles(osm2)
plot(st_geometry(trip), col = "black", lwd = 4, add = TRUE )
plot(st_geometry(trip), col = c("red", "white"), lwd = 1, add=TRUE)
plot(st_geometry(apotheke.sf[10:20,]), pch = 21, bg = "red", cex = 1.5, add=TRUE)
mtext(get_credit("OpenStreetMap"), side = 1, line = -1, cex = .9, adj = .99)
dev.off()

osrmIsochrone

iso <- osrmIsochrone(loc = apotheke.sf[87,], returnclass="sf",
                     breaks = seq(from = 0, to = 14, by = 2), res = 70)
osm3 <- get_tiles(x = iso, crop = TRUE, zoom = 12)
bks <- sort(c(unique(iso$min), max(iso$max)))
library(cartography)
cols <- paste0(carto.pal("turquoise.pal", n1 = length(bks)-1), 'BF')
png("img/iso.png", width = 604, height = 595)
par(mar = c(0,0,0,0))
plot_tiles(osm3)
choroLayer(x = iso, var = "center", breaks = bks,
           border = NA, col = cols,
           legend.pos = "topleft",legend.frame = TRUE,
           legend.title.txt = "Isochrones\n(min)",
           legend.title.cex = 1, legend.values.cex = .8,
           add = TRUE)
plot(st_geometry(apotheke.sf[87,]), pch = 21, bg = "red", 
     cex = 1.5, add=TRUE)
mtext(get_credit("OpenStreetMap"), side = 1, line = -1, cex = .9, adj = .99)
dev.off()

Installation

• Development version on GitHub

remotes::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.