geo_h3cell_neighbors()
S’applique à : ✅Microsoft Fabric✅Azure Data Explorer✅Azure Monitor✅Microsoft Sentinel
Calcule les voisins de cellules H3.
En savoir plus sur la cellule H3.
Syntaxe
geo_h3cell_neighbors(
h3cell)
En savoir plus sur les conventions de syntaxe.
Paramètres
Nom | Type | Requise | Description |
---|---|---|---|
h3cell | string |
✔️ | Valeur de jeton de cellule H3 telle qu’elle a été calculée par geo_point_to_h3cell(). |
Retours
Tableau de voisins de cellules H3. Si la cellule H3 n’est pas valide, la requête produit un résultat null.
Remarque
Si plusieurs voisins immidiés sont nécessaires, consultez geo_h3cell_rings().
Exemples
L’exemple suivant calcule les voisins de cellules H3.
print neighbors = geo_h3cell_neighbors('862a1072fffffff')
Sortie
voisins |
---|
["862a10727ffffff »,"862a10707ffffff »,"862a1070fff »,"862a1077ffffff »,"862a100dfff »,"862a100d7ffffff"] |
L’exemple suivant calcule un tableau de cellules H3 d’entrée avec ses voisins.
let h3cell = '862a1072fffffff';
print cells = array_concat(pack_array(h3cell), geo_h3cell_neighbors(h3cell))
Sortie
Cellules |
---|
["862a1072fffffff »,"862a10727ffffff »,"862a107ffffff »,"862a1070fffffff »,"862a1077ffffff »,"862a100dfff »,"862a100d7ffffff"] |
L’exemple suivant calcule la collection geometry GeoJSON des polygones de cellules H3.
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"))
Sortie
geojson |
---|
{"type » : « Feature »,"geometry » : {"type » : « GeometryCollection »,"geometries » : [ {"type » :"Polygon »,"coordinates » :[[-74.0022744646159,40.735376026215022],[-74.04690802968236,36,240.727986222489115],[-74.060610712223664,40.696775140349033],[-74.029724408156682,40.672970047595463],[-73.985140983708192,40.680349049267583],[-73.971393761028622,40.711543935433],[-74.0022744646159,40.735376026215022]]]}, {"type » :"Polygon »,"coordinates » :[[-74.01944838354617,40.790439140236963],[-74.0641321938436333 40.783038509825],[-74.07783966534211,40.751803958414136],[-74.046908029686236,40.727986222489115],[-74.0022744646159,40.735376026215022],[-73.9885222328408948,40.76659438221254],[-74.019448383546617,40.790439140236963]]]}, {"type » :"Polygon »,"coordinates » :[[[-74.077839665342211,40.751803958414136],[-74.1224794808745,140.744383587828388],[-74.1361375042681,40.713156370029125],[-74.1052004095288,40.689365648097258],[-74.060610712223664,40.696775140349033],[-74.046908029686236,40.727986222489115],[-74.077839665342211,40.751803958414136]]]}, {"type » :"Polygon »,"coordinates » :[[-74.060610712223664,40.696775140349033],[-74.1052004095288,240.689365648097258],[-74.118853750491638,40.658161927046628],[-74.0879619670 209,40.634383824229609],[-74.04342283844933,40.641782462872115],[-74.029724408156682,40.672970047595463],[-74.060610712223664,40.69675140349033]]]}, {"type » :"Polygon »,"coordinates » :[[-73.985140983708192,40.680349049267583],[-74.029724408156682, 40.672970047595463],[-74.043422283844933,40.641782462872115],[-74.012581189358343,40.61799065981623],[-73.968047801220749,40.625358290164748],[-73.954305509472675,40.6565296784555],[-73.985140983708192,40.680349049267583]]]}, {"type » :"Polygon »,"coordinates » :[[-73.926766604813565,40.718903205013063],[-73.971393761028622,40.71154393543933],[-73.985140983708192,40.680349049267583],[-73.954305509472675,40.656529678451555],[-73.909728515658443,40.66387822224435],[-73.895936872069854,40.69505685239637],[-73.926766604813565,40.718903205013063]]]}, {"type » :"Polygon »,"coordinates » :[[-73.94384490497629,40.773964402038523],[-73.98852222332328408948, 40.76659438221254],[-74.0022744646159,40.73537602626215022],[-73.971393761028622,40.711543935433],[-73.926766604813565,40.718903205013063],[-73.912969923470314,40.750105305345329],[-73.94384490494976629,40.773964402038523]]]}}, « properties » : {"name » : « polygons"}} |
L’exemple suivant calcule les unions de polygones qui représentent la cellule H3 et ses voisins.
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)
Sortie
polygone |
---|
{ « type » : « Polygon », "coordinates": [[[ -73.926766604813565, 40.718903205013063],[ -73.912969923470314, 40.750105305345329],[ -73.943844904976629, 40.773964402038523],[ -73.988522328408948, 40.766594382212254],[ -74.019448383546617, 40.79043914023697],[ -74.064132193843633, 40.783038509825005],[ -74.077839665342211, 40.751803958414136],[ -74.1224794808745, 40.744383587828388],[ -74.1361375042681, 40.713156370029125],[ -74.1052004095288, 40.689365648097251],[ -74.118853750491638, 40.658161927046628],[ -74.0879619670209, 40.6343838242296],[ -74.043422283844933, 40.641782462872115],[ -74.012581189358343, 40.617990065981623],[ -73.968047801220749, 40.625358290164755],[ -73.954305509472675, 40.656529678451555],[ -73.909728515658443, 40.663878222244442],[ -73.895936872069854, 40.695056852396377],[ -73.926766604813565, 40.718903205013063]]]} |
L’exemple suivant retourne true en raison de l’entrée de jeton de cellule H3 non valide.
print invalid = isnull(geo_h3cell_neighbors('abc'))
Sortie
non valide |
---|
1 |