GEORADIUSBYMEMBER

Syntax

GEORADIUSBYMEMBER key member radius <M | KM | FT | MI> [WITHCOORD] [WITHDIST] [WITHHASH] [COUNT count [ANY]] [ASC | DESC] [STORE key | STOREDIST key]

Time complexity: O(N+log(M)) where N is the number of elements inside the bounding box of the circular area delimited by center and radius and M is the number of items inside the index.

ACL categories: @write, @geo, @slow

This command is exactly like GEORADIUS with the sole difference that, it accepts the name of a member already existing inside the geospatial index.

The position of the specified member is used as the center of the query.

Return

• If no WITH* option is specified, an array reply of matched member names
• If WITHCOORD, WITHDIST, or WITHHASH options are specified, the command returns an array reply of arrays, where each sub-array represents a single item:
  • The distance from the center as a floating point number, in the same unit specified in the radius.
  • The Geohash integer.
  • The coordinates as a two items x,y array (longitude,latitude).

Examples

dragonfly> GEOADD Greece 11.994038 31.792256 "Thessaloniki"
(integer) 1
dragonfly> GEOADD Greece  37.983810 23.727539 "Athens" 39.62069 19.91975 "Corfu"
(integer) 2
dragonfly> GEORADIUSBYMEMBER Greece Thessaloniki 1000 km
1) "Corfu"
2) "Thessaloniki"
3) "Athens"