# 'A5' Discrete Global Grid System

## Documentation for package ‘a5R’ version 0.3.1

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

## Help Pages

a5_cell | A5 Cell Index Vector
a5_cell_area | Cell area at a given resolution
a5_cell_distance | Distance between cell centroids
a5_cell_from_arrow | Convert between a5_cell and Arrow uint64 arrays
a5_cell_to_arrow | Convert between a5_cell and Arrow uint64 arrays
a5_cell_to_boundary | Get cell boundary polygons
a5_cell_to_children | Get child cells
a5_cell_to_lonlat | Convert A5 cell indices to coordinates
a5_cell_to_parent | Navigate to parent cell(s)
a5_compact | Compact a set of A5 cells
a5_get_num_cells | Total number of cells at a given resolution
a5_get_num_children | Number of children between two resolutions
a5_get_res0_cells | Get all resolution-0 root cells
a5_get_resolution | Get the resolution of A5 cell indices
a5_get_threads | Set the number of threads used by a5R
a5_grid | Generate a grid of A5 cells covering an area
a5_grid_disk | Cells within k hops of a cell
a5_hex_to_u64 | Coerce between hex strings and A5 cell vectors
a5_is_valid | A5 Cell Index Vector
a5_lonlat_to_cell | Convert coordinates to A5 cell indices
a5_set_threads | Set the number of threads used by a5R
a5_spherical_cap | Cells within a great-circle radius
a5_u64_to_hex | Coerce between hex strings and A5 cell vectors
a5_uncompact | Uncompact a set of A5 cells to a target resolution
as_a5_cell | A5 Cell Index Vector
is_a5_cell | A5 Cell Index Vector
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