PostGIS
Synopsis
geometry +`*`+ST_GeomFromGeoHash*(`text `geohash, integer
precision=full_precision_of_geohash`)`;
Description
Return a geometry from a GeoHash string. The geometry will be a polygon representing the GeoHash bounds.
If no precision is specified ST_GeomFromGeoHash returns a polygon
based on full precision of the input GeoHash string.
If precision is specified ST_GeomFromGeoHash will use that many
characters from the GeoHash to create the polygon.
Availability: 2.1.0
Examples
SELECT ST_AsText(ST_GeomFromGeoHash('9qqj7nmxncgyy4d0dbxqz0'));
st_astext
--------------------------------------------------------------------------------------------------------------------------
POLYGON((-115.172816 36.114646,-115.172816 36.114646,-115.172816 36.114646,-115.172816 36.114646,-115.172816 36.114646))
SELECT ST_AsText(ST_GeomFromGeoHash('9qqj7nmxncgyy4d0dbxqz0', 4));
st_astext
------------------------------------------------------------------------------------------------------------------------------
POLYGON((-115.3125 36.03515625,-115.3125 36.2109375,-114.9609375 36.2109375,-114.9609375 36.03515625,-115.3125 36.03515625))
SELECT ST_AsText(ST_GeomFromGeoHash('9qqj7nmxncgyy4d0dbxqz0', 10));
st_astext
----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
POLYGON((-115.17282128334 36.1146408319473,-115.17282128334 36.1146461963654,-115.172810554504 36.1146461963654,-115.172810554504 36.1146408319473,-115.17282128334 36.1146408319473))