geo_h3cell_neighbors()

Applies to: ✅ Azure Data Explorer ✅ Azure Monitor ✅ Microsoft Sentinel

Calculates the H3 cell neighbors.

Read more about H3 Cell.

geo_h3cell_neighbors(h3cell)

Learn more about syntax conventions.

An array of H3 cell neighbors. If the H3 Cell is invalid, the query will produce a null result.

The following example calculates H3 cell neighbors.

print neighbors = geo_h3cell_neighbors('862a1072fffffff')

Output

The following example calculates an array of input H3 cell with its neighbors.

let h3cell = '862a1072fffffff';
print cells = array_concat(pack_array(h3cell), geo_h3cell_neighbors(h3cell))

Output

The following example calculates H3 cells polygons GeoJSON geometry collection.

let h3cell = '862a1072fffffff';
print cells = array_concat(pack_array(h3cell), geo_h3cell_neighbors(h3cell))
| mv-expand cells to typeof(string)
| project polygons = geo_h3cell_to_polygon(cells)
| summarize arr = make_list(polygons)
| project geojson = bag_pack("type", "Feature","geometry", bag_pack("type", "GeometryCollection", "geometries", arr), "properties", bag_pack("name", "polygons"))

Output

The following example calculates polygon unions that represent H3 cell and its neighbors.

let h3cell = '862a1072fffffff';
print cells = array_concat(pack_array(h3cell), geo_h3cell_neighbors(h3cell))
| mv-expand cells to typeof(string)
| project polygons = geo_h3cell_to_polygon(cells)
| summarize arr = make_list(polygons)
| project polygon = geo_union_polygons_array(arr)

Output

The following example returns true because of the invalid H3 Cell token input.

print invalid = isnull(geo_h3cell_neighbors('abc'))

Output