H3 Functions

A range of functions are available to process H3 hexagon indexes in Studio expressions.

Function	Arguments	Return Type	Description
`geoToH3()`	`real`, `real`, `integer`	`string`	Indexes the latitude, longitude location at the specified resolution, returning the index of the cell containing the location. Returns 0 on error.
`h3ToLat()`	`string`	`real`	Returns centroid latitude of cell (as in `geoToH3`)
`h3ToLng()`	`string`	`real`	Returns centroid longitude of cell (as in `geoToH3`)
`h3ToCenterChild()`	`string`, `integer`	`string`	Returns the center child (finer) index contained by h at resolution childRes.
`h3ToParent()`	`string`, `integer`	`string`	Returns the parent (coarser) index containing h.
`h3IsPentagon()`	`string`	`boolean`	Returns true if this index represents a pentagonal cell.
`h3IsValid()`	`string`	`boolean`	Returns true if this is a valid H3 index.
`h3IsResClassIII()`	`string`	`boolean`	Returns true if this index has a resolution with Class III orientation.
`h3GetBaseCell()`	`string`	`integer`	Returns the base cell number of the index.
`h3GetResolution()`	`string`	`integer`	Returns the resolution of the index.
`h3IndexesAreNeighbors()`	`string`, `string`	`boolean`	Returns whether or not the provided H3Indexes are neighbors. Returns 1 if the indexes are neighbors, 0 otherwise.
`getH3UnidirectionalEdge()`	`string`, `string`	`string`	Returns a unidirectional edge H3 index based on the provided origin and destination. Returns 0 on error.
getOriginH3Index``FromUnidirectionalEdge()	`string`	`string`	Returns the origin hexagon from the unidirectional edge H3Index.
getDestinationH3Index``FromUnidirectionalEdge()	`string`	`string`	Returns the destination hexagon from the unidirectional edge H3Index.
`h3UnidirectionalEdgeIsValid()`	`string`	`boolean`	Determines if the provided H3Index is a valid unidirectional edge index.
`h3Distance()`	`string`, `string`	`integer`	Returns the distance in grid cells between the two indexes.
`experimentalH3ToLocalI()`	`string`, `string`	`integer`	Returns a local I coordinate for this cell anchored by an origin.
`experimentalH3ToLocalJ()`	`string`, `string`	`integer`	Returns a local J coordinate for this cell anchored by an origin.
`experimentalLocalIjToH3()`	`string`, `integer`, `integer`	`string`	Produces an H3 index from local IJ coordinates anchored by an origin. This function is experimental, and its output is not guaranteed to be compatible across different versions of H3.
`degsToRads()`	`real`	`real`	Converts degrees to radians.
`radsToDegs()`	`real`	`real`	Converts radians to degrees.