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PolarDB:Overview

Last Updated:Aug 26, 2026

This topic describesGanosBase GeomGrid extension.

GeomGrid

GeomGrid is a data type in theGanosBase GeomGrid extension that represents a geographic grid object.A geographic grid is a set of polygonal grid cells that reproduce the surface of the earth, used to represent geographic feature positions and integrate spatio-temporal data.Each grid cell is encoded with a one-to-one mapping.3D geographic grids incorporate height in addition to latitude and longitude for subdivision and encoding.

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  • The following data types can be converted to GeomGrid:

    • text

    • bytea

    • geometry

    • meshgeom

    • sfmesh

    • vomesh

  • GeomGrid can be converted to the following data types:

    • text

    • bytea

    • geometry

    • box/box3d

    • meshgeom

    • vomesh

H3Grid

H3Grid is GanosBase GeomGridextension. It is a hexagonal hierarchical geospatial indexing system based on Uber H3 indexing.

  • The following data types can be converted to H3Grid:

    • text

    • bytea

    • integer

    • Longitude and latitude

  • H3Grid can be converted to the following data types:

    • text

    • bytea

    • geometry