地理函数
本节提供 Databend 中地理函数的参考信息。
坐标转换
六边形属性
- H3_CELL_AREA_M2
- H3_CELL_AREA_RADS2
- H3_HEX_AREA_KM2
- H3_HEX_AREA_M2
- H3_GET_BASE_CELL
- H3_GET_FACES
- H3_GET_RESOLUTION
- H3_TO_CENTER_CHILD
- H3_TO_CHILDREN
- H3_TO_GEO_BOUNDARY
- H3_TO_PARENT
- H3_NUM_HEXAGONS
六边形关系
- H3_HEX_RING
- H3_K_RING
- H3_INDEXES_ARE_NEIGHBORS
- H3_IS_PENTAGON
- H3_IS_RES_CLASS_III
- H3_IS_VALID
- H3_GET_DESTINATION_INDEX_FROM_UNIDIRECTIONAL_EDGE
- H3_GET_INDEXES_FROM_UNIDIRECTIONAL_EDGE
- H3_GET_ORIGIN_INDEX_FROM_UNIDIRECTIONAL_EDGE
- H3_GET_UNIDIRECTIONAL_EDGE_BOUNDARY
- H3_GET_UNIDIRECTIONAL_EDGE
- H3_GET_UNIDIRECTIONAL_EDGES_FROM_HEXAGON
- H3_UNIDIRECTIONAL_EDGE_IS_VALID
测量
- H3_DISTANCE
- H3_EDGE_ANGLE
- H3_EDGE_LENGTH_KM
- H3_EDGE_LENGTH_M
- H3_EXACT_EDGE_LENGTH_KM
- H3_EXACT_EDGE_LENGTH_M
- H3_EXACT_EDGE_LENGTH_RADS
