Function reference • s2

Geography Constructors and Exporters

Convert objects to and from geography vectors

as_s2_geography() s2_geography() as_wkb(<s2_geography>) as_wkt(<s2_geography>): Create an S2 Geography Vector

s2_geog_point() s2_make_line() s2_make_polygon() s2_geog_from_text() s2_geog_from_wkb() s2_as_text() s2_as_binary() s2_tessellate_tol_default(): Create and Format Geography Vectors

Functions that operate on geography vectors and return geography vectors

s2_boundary() s2_centroid() s2_closest_point() s2_minimum_clearance_line_between() s2_difference() s2_sym_difference() s2_intersection() s2_union() s2_snap_to_grid() s2_simplify() s2_rebuild() s2_buffer_cells() s2_convex_hull() s2_centroid_agg() s2_coverage_union_agg() s2_rebuild_agg() s2_union_agg() s2_convex_hull_agg() s2_point_on_surface(): S2 Geography Transformations

Functions that operate two geography vectors and return a logical vector

s2_contains() s2_within() s2_covered_by() s2_covers() s2_disjoint() s2_intersects() s2_equals() s2_intersects_box() s2_touches() s2_dwithin() s2_prepared_dwithin(): S2 Geography Predicates

Functions that operate one or more geography vectors and return a vector of values

s2_is_collection() s2_is_valid() s2_is_valid_detail() s2_dimension() s2_num_points() s2_is_empty() s2_area() s2_length() s2_perimeter() s2_x() s2_y() s2_distance() s2_max_distance(): S2 Geography Accessors

s2_bounds_cap() s2_bounds_rect(): Compute feature-wise and aggregate bounds

These functions return various relationships between two geography vectors

s2_closest_feature() s2_closest_edges() s2_farthest_feature() s2_distance_matrix() s2_max_distance_matrix() s2_contains_matrix() s2_within_matrix() s2_covers_matrix() s2_covered_by_matrix() s2_intersects_matrix() s2_disjoint_matrix() s2_equals_matrix() s2_touches_matrix() s2_dwithin_matrix() s2_may_intersect_matrix(): Matrix Functions

s2_project() s2_project_normalized() s2_interpolate() s2_interpolate_normalized(): Linear referencing

s2_cell_union() as_s2_geography(<s2_cell_union>) as_s2_cell_union(): Create S2 Cell Union vectors

s2_cell_union_normalize() s2_cell_union_contains() s2_cell_union_intersects() s2_cell_union_intersection() s2_cell_union_union() s2_cell_union_difference() s2_covering_cell_ids() s2_covering_cell_ids_agg(): S2 cell union operators

s2_cell() s2_cell_sentinel() s2_cell_invalid() as_s2_cell() new_s2_cell(): Create S2 Cell vectors

s2_cell_is_valid() s2_cell_debug_string() s2_cell_to_lnglat() s2_cell_center() s2_cell_boundary() s2_cell_polygon() s2_cell_vertex() s2_cell_level() s2_cell_is_leaf() s2_cell_is_face() s2_cell_area() s2_cell_area_approx() s2_cell_parent() s2_cell_child() s2_cell_edge_neighbour() s2_cell_contains() s2_cell_distance() s2_cell_max_distance() s2_cell_may_intersect() s2_cell_common_ancestor_level() s2_cell_common_ancestor_level_agg(): S2 cell operators

s2_options() s2_snap_identity() s2_snap_level() s2_snap_precision() s2_snap_distance(): Geography Operation Options

Useful data for testing and demonstrating s2 functions

s2_data_tbl_countries s2_data_tbl_timezones s2_data_tbl_cities s2_data_countries() s2_data_timezones() s2_data_cities(): Low-resolution world boundaries, timezones, and cities

Interact with spherical geometry at a low level

wk_handle(<s2_geography>) s2_geography_writer() wk_writer(<s2_geography>) s2_trans_point() s2_trans_lnglat() s2_projection_plate_carree() s2_projection_mercator() s2_hemisphere() s2_world_plate_carree() s2_projection_orthographic(): Low-level wk filters and handlers