Geo ranking info

The data Algolia uses for geo ranking.

When you use Algolia’s Geo feature, you can get information about each record’s geo ranking. This information can be useful to detect bad or missing geo data, and can indicate whether you need to adjust precision or tweak your geo settings.

To get geo-ranking data, you need to set getRankingInfo=true on your query parameter. Doing this adds two new attributes to _rankingInfo: matchedGeoLocation and aroundLatLng.

matchedGeoLocation attribute

The matchedGeoLocation attribute will contain geo-related information, including the geo-location that matched when you were performing a geo-query. By using this information, you’ll be able to identify the geo-location that was used and to retrieve some associated information like the name.

matchedGeoLocation:

• geo location that matched the query
• lat (float): latitude of matched location
• lng (float): longitude of matched location
• distance (integer): distance between the matched location and the search location (in meters). Caution: contrary to geoDistance, this value is not divided by the geo precision.

Here is an example of _rankingInfo attribute returned on a record with several geo-location (the matchedGeoLocation attribute will be in _rankingInfo only if a geo-query is performed):

json

{
  "_rankingInfo": {
    "nbTypos": 0,
    "firstMatchedWord": 0,
    "proximityDistance": 0,
    "userScore": 7,
    "geoDistance": 1600,
    "geoPrecision": 1,
    "nbExactWords": 0,
    "words": 0,
    "filters": 0,
    "matchedGeoLocation": {
      "lat": 37.3688,
      "lng": -122.036,
      "distance": 1600
    }
  }
}

aroundLatLng attribute

aroundLatLng (string, optional):

• Only returned when aroundLatLngViaIP is set
• Computed geo location
• Legacy reason (param is a string not an object) –> ${lat}, ${lng}