'A5' Discrete Global Grid System

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Documentation for package ‘a5R’ version 1.0.0

• DESCRIPTION file.
• User guides, package vignettes and other documentation.
• Package NEWS.

Help Pages

a5_area	Measure coverings
a5_bbox	Bounding box of polygons with great-circle edges
a5_cell	A5 Cell Index Vector
a5_cell_area	Cell size and counts by resolution
a5_cell_child	The i-th child of each cell
a5_cell_children_range	Range of descendant cell ids
a5_cell_distance	Distance between cell centroids
a5_cell_edge_length_avg	Cell size and counts by resolution
a5_cell_from_arrow	Convert between a5_cell and Arrow uint64 arrays
a5_cell_list	List of A5 cell vectors
a5_cell_to_arrow	Convert between a5_cell and Arrow uint64 arrays
a5_cell_to_boundary	Get cell boundary polygons
a5_cell_to_boundary_xy	Get cell boundary vertices as flat coordinate vectors
a5_cell_to_children	Index parents and children
a5_cell_to_lonlat	Convert between coordinates and cells
a5_cell_to_parent	Index parents and children
a5_cell_to_subcells	Supercells and subcells: parents and children by location
a5_cell_to_supercell	Supercells and subcells: parents and children by location
a5_compact	Compact and uncompact sets of cells
a5_compaction	Compact and uncompact sets of cells
a5_contains	Test coverings
a5_coordinates	Convert between coordinates and cells
a5_count	Measure coverings
a5_covering	A5 covering vectors
a5_covering_from_arrow	Convert between a5_covering and Arrow list<uint64> arrays
a5_covering_measures	Measure coverings
a5_covering_predicates	Test coverings
a5_covering_resolution	A5 covering vectors
a5_covering_stored	Stored cells of a covering
a5_covering_to_arrow	Convert between a5_covering and Arrow list<uint64> arrays
a5_covering_to_supercells	Supercells of a covering
a5_difference	Combine coverings
a5_errors	Error classes
a5_from_arrow_table	Convert data frames with cell columns to and from Arrow tables
a5_get_num_cells	Cell size and counts by resolution
a5_get_num_children	Cell size and counts by resolution
a5_get_res0_cells	Get all resolution-0 root cells
a5_get_resolution	Get the resolution of A5 cell indices
a5_grid_disk	Cells within k hops of a cell
a5_grid_disk_vertex	Cells within k hops of a cell
a5_hex_to_u64	Coerce between hex strings and A5 cell vectors
a5_hierarchy	Index parents and children
a5_info	a5R build and session information
a5_intersect	Combine coverings
a5_is_valid	Check that values are A5 cells
a5_is_valid_cell	Check that values are A5 cells
a5_line_string_to_cells	Cells traced by a great-circle linestring
a5_lonlat_to_cell	Convert between coordinates and cells
a5_migrate	Migrate cell ids from the pre-1.0 index
a5_overlaps	Test coverings
a5_polygon_to_cells	Cells inside or overlapping a polygon
a5_resolution_stats	Cell size and counts by resolution
a5_set_operations	Combine coverings
a5_spatial_hierarchy	Supercells and subcells: parents and children by location
a5_spherical_cap	Cells within a great-circle radius
a5_threads	Get or set the number of threads used by a5R
a5_to_arrow_table	Convert data frames with cell columns to and from Arrow tables
a5_u64_to_hex	Coerce between hex strings and A5 cell vectors
a5_uncompact	Compact and uncompact sets of cells
a5_union	Combine coverings
as_a5_cell	A5 Cell Index Vector
as_a5_cell_list	List of A5 cell vectors
as_a5_covering	A5 covering vectors
as_a5_covering.a5_cell	A5 covering vectors
as_a5_covering.a5_cell_list	A5 covering vectors
as_a5_covering.a5_covering	A5 covering vectors
as_a5_covering.list	A5 covering vectors
is_a5_cell	A5 Cell Index Vector
is_a5_covering	A5 covering vectors
unlist.a5_cell_list	List of A5 cell vectors
with.a5_threads	Get or set the number of threads used by a5R
wk_crs.a5_cell	wk methods for a5_cell
wk_handle.a5_cell	wk methods for a5_cell
wk_methods	wk methods for a5_cell