opencage

Geocode with the OpenCage API, either from place name to longitude and latitude (forward geocoding) or from longitude and latitude to the name and address of the location (reverse geocoding).

Installation

You can install {opencage} from CRAN, R-universe or GitHub like this:

• Release version from CRAN

  install.packages("opencage")

• Development version from R-universe

  install.packages(
    "opencage", 
    repos = c("https://ropensci.r-universe.dev", getOption("repos"))
  )

• Development version from GitHub with {pak}

  pak::pak("ropensci/opencage")

  or with {remotes}

  remotes::install_github("ropensci/opencage")

Quickstart

For the best experience, we recommend that you read through the “Introduction to opencage” vignette (vignette("opencage")), but if you are in a hurry:

1. Register at opencagedata.com/users/sign_up.
2. Generate an API key at the OpenCage dashboard.
3. Save your API key as an environment variable like OPENCAGE_KEY=yourkey in .Renviron. See help(oc_config) for alternative ways to set your OpenCage API key.

Now you are ready to turn place names into latitude and longitude coordinates:

library(opencage)
oc_forward_df(placename = "Sarzeau")

placename	oc_lat	oc_lng	oc_formatted
Sarzeau	47.52877	-2.7642	56370 Sarzeau, France

Or turn a set of coordinates into the name and address of the location:

oc_reverse_df(latitude = 51.5034070, longitude = -0.1275920)

latitude	longitude	oc_formatted
51.50341	-0.127592	10 Downing Street, London, SW1A 2AA, United Kingdom

But remember, the vignettes are really great! We have:

• “Introduction to opencage” vignette("opencage")
• “Customise your query” vignette("customise_query")
• “Output options” vignette("output_options")

About OpenCage

The OpenCage API supports forward and reverse geocoding. Sources of OpenCage are open geospatial data including OpenStreetMap, DataScienceToolkit, GeoPlanet, Natural Earth Data, libpostal, GeoNames, and Flickr’s shapefiles plus a whole lot more besides. Refer to the current full list of credits.

Code of Conduct

Please note that this package is released with a Contributor Code of Conduct. By contributing to this project, you agree to abide by its terms.