Returns all H3 grid cells whose distance from the central H3 grid is less than the specified distance k.
Syntax
setof h3grid ST_GridDisk(h3grid origin, integer k);Parameters
| Parameter | Type | Description |
|---|---|---|
origin | h3grid | The central H3 grid cell. |
k | integer | The distance from the central H3 grid. |
Examples
The following example retrieves all H3 grid cells within a grid distance of 5 from the cell at latitude 25.1, longitude 123.1, for a total of 91 rows.
SELECT ST_GridDisk(st_h3fromlatlng(25.1,123.1),5);Output:
st_griddisk
------------------------
01010060170363C5BAF408
01010066170363C5BAF408
01010062170363C5BAF408
01010063170363C5BAF408
01010061170363C5BAF408
....
(91 rows)