Forward geocoding

Deprecated: use oc_forward or oc_forward_df for forward geocoding.

Usage

opencage_forward(
  placename,
  key = opencage_key(),
  bounds = NULL,
  countrycode = NULL,
  language = NULL,
  limit = 10L,
  min_confidence = NULL,
  no_annotations = FALSE,
  no_dedupe = FALSE,
  no_record = FALSE,
  abbrv = FALSE,
  add_request = TRUE
)

Arguments

placename

A character vector with the location names or addresses to be geocoded.

If the locations are addresses, see OpenCage's instructions on how to format addresses for best forward geocoding results.

key

Your OpenCage API key as a character vector of length one. By default, opencage_key() will attempt to retrieve the key from the environment variable OPENCAGE_KEY.

bounds

A list of bounding boxes of length one or length(placename). Bounding boxes are named numeric vectors, each with four coordinates forming the south-west and north-east corners of the bounding box: list(c(xmin, ymin, xmax, ymax)). bounds restricts the possible results to the supplied region. It can be specified with the oc_bbox() helper. For example: bounds = oc_bbox(-0.563160, 51.280430, 0.278970, 51.683979). Default is NULL.

countrycode

A two letter code as defined by the ISO 3166-1 Alpha 2 standard that restricts the results to the given country or countries. E.g. "AR" for Argentina, "FR" for France, "NZ" for the New Zealand. Multiple countrycodes per placename must be wrapped in a list. Default is NULL.

language

An IETF BCP 47 language tag (such as "es" for Spanish or "pt-BR" for Brazilian Portuguese). OpenCage will attempt to return results in that language. Alternatively you can specify the "native" tag, in which case OpenCage will attempt to return the response in the "official" language(s). In case the language parameter is set to NULL (which is the default), the tag is not recognized, or OpenCage does not have a record in that language, the results will be returned in English.

limit

Numeric vector of integer values to determine the maximum number of results returned for each placename. Integer values between 1 and 100 are allowed. Default is 10.

min_confidence

Numeric vector of integer values between 0 and 10 indicating the precision of the returned result as defined by its geographical extent, (i.e. by the extent of the result's bounding box). See the API documentation for details. Only results with at least the requested confidence will be returned. Default is NULL.

no_annotations

Logical vector indicating whether additional information about the result location should be returned. TRUE by default, which means that the results will not contain annotations.

no_dedupe

Logical vector (default FALSE), when TRUE the results will not be deduplicated.

no_record

Logical vector of length one (default FALSE), when TRUE no log entry of the query is created, and the geocoding request is not cached by OpenCage.

abbrv

Logical vector (default FALSE), when TRUE addresses in the formatted field of the results are abbreviated (e.g. "Main St." instead of "Main Street").

add_request

Logical vector (default FALSE) indicating whether the request is returned again with the results. If the return value is a df_list, the query text is added as a column to the results. json_list results will contain all request parameters, including the API key used! This is currently ignored by OpenCage if return value is geojson_list.

Value

A list with

• results as a tibble with one line per result,

• the number of results as an integer,

• the timestamp as a POSIXct object,

• rate_info tibble/data.frame with the maximal number of API calls per day for the used key, the number of remaining calls for the day and the time at which the number of remaining calls will be reset.

Examples

if (FALSE) { # oc_key_present() && oc_api_ok()
opencage_forward(placename = "Sarzeau")
opencage_forward(placename = "Islington, London")
opencage_forward(placename = "Triererstr 15,
                              Weimar 99423,
                              Deutschland")
}