ClickHouse/docs/en/sql-reference/functions/geo/index.md

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sidebar_label: Geo
sidebar_position: 62
---

# Geo Functions 

## Geographical Coordinates Functions

-   [greatCircleDistance](./coordinates.md#greatCircleDistance)
-   [geoDistance](./coordinates.md#geoDistance)
-   [greatCircleAngle](./coordinates.md#greatCircleAngle)
-   [pointInEllipses](./coordinates.md#pointInEllipses)
-   [pointInPolygon](./coordinates.md#pointInPolygon)

## Geohash Functions
-   [geohashEncode](./geohash.md#geohashEncode)
-   [geohashDecode](./geohash.md#geohashDecode)
-   [geohashesInBox](./geohash.md#geohashesInBox)

## H3 Indexes Functions

-   [h3IsValid](./h3#h3IsValid)
-   [h3GetResolution](./h3#h3GetResolution)
-   [h3EdgeAngle](./h3#h3EdgeAngle)
-   [h3EdgeLengthM​](./h3#h3EdgeLengthM​)
-   [h3EdgeLengthKm] (./h3#h3EdgeLengthKm)
-   [geoToH3](./h3#geoToH3)
-   [h3ToGeo](./h3#h3ToGeo)
-   [h3ToGeoBoundary](./h3#h3ToGeoBoundary)
-   [h3kRing](./h3#h3kRing)
-   [h3GetBaseCell](./h3#h3GetBaseCell)
-   [h3HexAreaM2](./h3#h3HexAreaM2)
-   [h3HexAreaKm2](./h3#h3HexAreaKm2)
-   [h3IndexesAreNeighbors](./h3#h3IndexesAreNeighbors)
-   [h3ToChildren](./h3#h3ToChildren)
-   [h3ToParent](./h3#h3ToParent)
-   [h3ToString](./h3#h3ToString)
-   [stringToH3](./h3#stringToH3)
-   [h3GetResolution](./h3#h3GetResolution)
-   [h3IsResClassIII](./h3#h3IsResClassIII)
-   [h3IsPentagon](./h3#h3IsPentagon)
-   [h3GetFaces](./h3#h3GetFaces)
-   [h3CellAreaM2](./h3#h3CellAreaM2)
-   [h3CellAreaRads2](./h3#h3CellAreaRads2)
-   [h3ToCenterChild](./h3#h3ToCenterChild)
-   [h3ExactEdgeLengthM](./h3#h3ExactEdgeLengthM)
-   [h3ExactEdgeLengthKm](./h3#h3ExactEdgeLengthKm)
-   [h3ExactEdgeLengthRads](./h3#h3ExactEdgeLengthRads)
-   [h3NumHexagons](./h3#h3NumHexagons)
-   [h3Line](./h3#h3Line)
-   [h3Distance](./h3#h3Distance)
-   [h3HexRing](./h3#h3HexRing)
-   [h3GetUnidirectionalEdge](./h3#h3GetUnidirectionalEdge)
-   [h3UnidirectionalEdgeIsValid](./h3#h3UnidirectionalEdgeIsValid)
-   [h3GetOriginIndexFromUnidirectionalEdge](./h3#h3GetOriginIndexFromUnidirectionalEdge)
-   [h3GetDestinationIndexFromUnidirectionalEdge](./h3#h3GetDestinationIndexFromUnidirectionalEdge)
-   [h3GetIndexesFromUnidirectionalEdge](./h3#h3GetIndexesFromUnidirectionalEdge)
-   [h3GetUnidirectionalEdgesFromHexagon](./h3#h3GetUnidirectionalEdgesFromHexagon)
-   [h3GetUnidirectionalEdgeBoundary](./h3#h3GetUnidirectionalEdgeBoundary)

## S2 Index Functions

-   [geoToS2](./s2#geoToS2)
-   [s2ToGeo](./s2#s2ToGeo)
-   [s2GetNeighbors](./s2#s2GetNeighbors)
-   [s2CellsIntersect](./s2#s2CellsIntersect)
-   [s2CapContains](./s2#s2CapContains)
-   [s2CapUnion](./s2#s2CapUnion)
-   [s2RectAdd](./s2#s2RectAdd)
-   [s2RectContains](./s2#s2RectContains)
-   [s2RectUinion](./s2#s2RectUinion)
-   [s2RectIntersection](./s2#s2RectIntersection)


[Original article](https://clickhouse.com/docs/en/sql-reference/functions/geo/) <!--hide-->