ST_GeoHash()

Datum ST_GeoHash

(

PG_FUNCTION_ARGS

)

Definition at line 2683 of file lwgeom_functions_basic.c.

{
 
        GSERIALIZED *geom = NULL;
        int precision = 0;
        char *geohash = NULL;
        text *result = NULL;
 
        if (PG_ARGISNULL(0))
        {
                PG_RETURN_NULL();
        }
 
        geom = PG_GETARG_GSERIALIZED_P(0);
 
        if (!PG_ARGISNULL(1))
        {
                precision = PG_GETARG_INT32(1);
        }
 
        geohash = lwgeom_geohash((LWGEOM *)(lwgeom_from_gserialized(geom)), precision);
 
        if (!geohash)
                PG_RETURN_NULL();
 
        result = cstring_to_text(geohash);
        pfree(geohash);
 
        PG_RETURN_TEXT_P(result);
}

References lwgeom_from_gserialized(), lwgeom_geohash(), and precision.

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