Signatures
Parameters
The input geometry.
The level value.
Return type
An integer value.
Example
Spatial Indexing
ST_S2CellIDs
Cover the geometry with Google S2 Cells, return the corresponding cell IDs with the given level.
The level indicates the size of cells. With a bigger level,
the cells will be smaller, the coverage will be more accurate, but the result size will be exponentially increasing.