| ddbs_area | Calculates the area of geometries |
| ddbs_as_hexwkb | Convert geometries to hexadecimal Well-Known Binary (HEXWKB) format |
| ddbs_as_text | Convert geometries to Well-Known Text (WKT) format |
| ddbs_as_wkb | Convert geometries to Well-Known Binary (WKB) format |
| ddbs_bbox | Returns the minimal bounding box enclosing the input geometry |
| ddbs_boundary | Returns the boundary of geometries |
| ddbs_buffer | Creates a buffer around geometries |
| ddbs_centroid | Calculates the centroid of geometries |
| ddbs_combine | Combine geometries into a single MULTI-geometry |
| ddbs_concave_hull | Returns the concave hull enclosing the geometry |
| ddbs_contains | Spatial contains predicate |
| ddbs_contains_properly | Spatial contains properly predicate |
| ddbs_convex_hull | Returns the convex hull enclosing the geometry |
| ddbs_covered_by | Spatial covered by predicate |
| ddbs_covers | Spatial covers predicate |
| ddbs_create_conn | Create a DuckDB connection with spatial extension |
| ddbs_create_schema | Check and create schema |
| ddbs_crosses | Spatial crosses predicate |
| ddbs_crs | Check CRS of a table |
| ddbs_difference | Calculates the difference of two geometries |
| ddbs_disjoint | Spatial disjoint predicate |
| ddbs_distance | Returns the distance between two geometries |
| ddbs_drivers | Get list of GDAL drivers and file formats |
| ddbs_envelope | Returns the envelope (bounding box) of geometries |
| ddbs_equals | Spatial equals predicate |
| ddbs_exterior_ring | Extracts the exterior ring of polygon geometries |
| ddbs_filter | Performs spatial filter of two geometries |
| ddbs_flip | Flip geometries horizontally or vertically |
| ddbs_generate_points | Generate random points within geometries |
| ddbs_glimpse | Check first rows of the data |
| ddbs_install | Checks and installs the Spatial extension |
| ddbs_interpolate_aw | Areal-Weighted Interpolation using DuckDB |
| ddbs_intersection | Calculates the intersection of two geometries |
| ddbs_intersects | Spatial intersects predicate |
| ddbs_intersects_extent | Spatial intersects extent predicate |
| ddbs_is_simple | Check if geometries are simple |
| ddbs_is_valid | Check if geometries are valid |
| ddbs_is_within_distance | Within Distance predicate |
| ddbs_join | Performs spatial joins of two geometries |
| ddbs_length | Calculates the length of geometries |
| ddbs_list_tables | Check tables and schemas inside a database |
| ddbs_load | Loads the Spatial extension |
| ddbs_make_polygon | Creates polygons from linestring geometries |
| ddbs_make_valid | Make invalid geometries valid |
| ddbs_overlaps | Spatial overlaps predicate |
| ddbs_predicate | Spatial predicate operations |
| ddbs_quadkey | Convert geometries to QuadKey tiles |
| ddbs_read_vector | Load spatial vector data from DuckDB into R |
| ddbs_register_vector | Register an SF Object as an Arrow Table in DuckDB |
| ddbs_rotate | Rotate geometries around centroid |
| ddbs_rotate_3d | Rotate 3D geometries around an axis |
| ddbs_scale | Scale geometries by X and Y factors |
| ddbs_shear | Shear geometries |
| ddbs_shift | Shift geometries by X and Y offsets |
| ddbs_simplify | Simplify geometries |
| ddbs_stop_conn | Close a duckdb connection |
| ddbs_touches | Spatial touches predicate |
| ddbs_transform | Transform coordinate reference system of geometries |
| ddbs_union | Union of geometries |
| ddbs_within | Spatial within predicate |
| ddbs_within_properly | Spatial within properly predicate |
| ddbs_write_vector | Write an SF Object to a DuckDB Database |