a5_covering_to_supercells() gives, for each covering, the cells at a
coarser resolution that contain the centre of at least one of its
cells, such as the partitions of a store that hold an area's data. It
matches a5_cell_to_supercell(a5_uncompact(x), resolution) without
duplicates, but never builds the covering's cells.
Arguments
- x
An a5_covering vector.
- resolution
Integer scalar target resolution, at or coarser than each covering's resolution.
Value
An a5_covering vector at resolution, the same length as x.
NA where x is NA.
Examples
area <- a5_polygon_to_cells(
wk::wkt("POLYGON ((-3.3 55.9, -3.1 55.9, -3.1 56, -3.3 56, -3.3 55.9))"),
resolution = 14
)
a5_uncompact(a5_covering_to_supercells(area, 6))
#> <a5_cell[2]>
#> [1] 63bb800000000000 63be800000000000