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‘osrmr’

‘osrmr’ is a wrapper around the OSRM API (https://github.com/Project-OSRM/osrm-backend/blob/master/docs/http.md). ‘osrmr’ works with API versions 4 and 5 and can handle servers that run locally as well as the osrm webserver.

Installation

You can install ‘osrmr’ from CRAN or github with:

install.packages("osrmr")

# install.packages("devtools")
devtools::install_github("ims-fhs/osrmr")

Examples

Access the OSRM with R using the onlinehost (webserver) of OSRM to:

library(osrmr)
nearest(lat = 47, lng = 8, api_version = 5, localhost = FALSE)
#>        lat      lng
#> 1 47.00008 8.003016
viaroute(lat1 = 47.1, lng1 = 8.1, lat2 = 46.9, lng2 = 8.3, instructions = FALSE,
         api_version = 5, localhost = FALSE)
#> [1] 2637.1

encoded_polyline_precision_5 <- rjson::fromJSON(file = "http://router.project-osrm.org/route/v1/driving/8.0997,47.1002;8.101110,47.10430?steps=false&geometries=polyline")$routes[[1]]$geometry
decode_geom(encoded_polyline_precision_5, precision = 5)
#>        lat     lng
#> 1 47.10020 8.09970
#> 2 47.10099 8.09952
#> 3 47.10161 8.10037
#> 4 47.10171 8.10066
#> 5 47.10215 8.10083
#> 6 47.10234 8.10098
#> 7 47.10287 8.10123
#> 8 47.10322 8.10125
#> 9 47.10430 8.10110

Note

  1. In order to use the localhost of OSRM you need a local build on your device. For more Information on the localhost see https://github.com/Project-OSRM/osrm-backend/wiki/Building-OSRM.
  2. When using the localhost it’s recommended to set the path of your local build as environment variable.

For more detailed Information about the components of the ‘osrmr’ package, check out the vignette.

These binaries (installable software) and packages are in development.
They may not be fully stable and should be used with caution. We make no claims about them.