GEOPOS key member [member …]

    Time complexity: O(log(N)) for each member requested, where N is the number of elements in the sorted set.

    Return the positions (longitude,latitude) of all the specified members of the geospatial index represented by the sorted set at key.

    The command can accept a variable number of arguments so it always returns an array of positions even when a single element is specified.

    , specifically:

    Non existing elements are reported as NULL elements of the array.

    *Examples

    redis> GEOADD Sicily 13.361389 38.115556 "Palermo" 15.087269 37.502669 "Catania" 

    1. 1) 1) "13.36138933897018433"
    2. 2) 1) "15.08726745843887329"
    3. 3) (nil)
    redis>