Package index • duckh3

Setup and Connection

Manage connections with H3 extension

ddbh3_create_conn(): Create a DuckDB connection with spatial and h3 extensions
ddbh3_default_conn(): Get or create default DuckDB connection

Converts from/to different H3 representations

ddbh3_h3_to_lon() ddbh3_h3_to_lat() ddbh3_h3_to_spatial() ddbh3_strings_to_bigint() ddbh3_bigint_to_strings() ddbh3_h3_to_points(): Convert H3 string or UBIGINT indexes to other representations
ddbh3_lonlat_to_spatial() ddbh3_lonlat_to_h3(): Convert longitude and latitude to H3 cell representations
ddbh3_polygons_to_spatial() ddbh3_lines_to_spatial() ddbh3_polygons_to_h3() ddbh3_lines_to_h3(): Convert polygon or linestring geometries to H3 cell representations
ddbh3_points_to_spatial() ddbh3_points_to_h3(): Convert spatial points to H3 cell representations

Work with H3 resolutions and hierarchy levels

ddbh3_get_base_cell_number(): Get the base cell number of an H3 cell
ddbh3_get_resolution(): Get the resolution of H3 cell indexes
ddbh3_get_child_pos(): Get the position of an H3 cell within its parent
ddbh3_child_pos_to_cell(): Get an H3 child cell from a parent and child position
ddbh3_get_parent() ddbh3_get_children() ddbh3_get_n_children() ddbh3_get_center_child(): Get parent and children H3 cells
ddbh3_get_icosahedron_faces(): Get the icosahedron faces of H3 cell indexes

Work with neighbors of H3 cells

ddbh3_grid_disk() ddbh3_grid_disk_distances() ddbh3_grid_ring(): Get H3 grid neighborhoods (disks, rings, and distances)
ddbh3_grid_distance(): Get the grid distance between two H3 cells
ddbh3_grid_path_cells(): Find a grid path connecting two H3 cells
ddbh3_max_grid_disk_size(): Get the maximum grid disk size for a given distance k

Check properties of H3 cell indexes

ddbh3_is_pentagon() ddbh3_is_h3() ddbh3_is_res_class_iii() ddbh3_is_vertex(): Check properties of H3 cell indexes

Extract and convert H3 cell vertices to spatial representations

ddbh3_h3_to_vertex() ddbh3_vertex_to_lon() ddbh3_vertex_to_lat() ddbh3_h3_to_vertexes() ddbh3_vertex_to_spatial(): Convert H3 cell indexes to vertex representations