Convert A5 cell indices to coordinates — a5_cell_to_lonlat • a5R

Returns the centre-point longitude and latitude of each cell.

Usage

a5_cell_to_lonlat(cell, as_dataframe = FALSE)

Arguments

cell: An a5_cell vector (or character coercible to one).
as_dataframe: Logical scalar controlling the return container. When FALSE (default), centroids are returned as a wk::xy() vector with WGS 84 CRS, the geographic-typed form that plugs into wk/sf pipelines. When TRUE, centroids are returned as a base data.frame with columns lon and lat.

Value

A wk::xy() vector (if as_dataframe = FALSE) or a data.frame with columns lon and lat (if as_dataframe = TRUE).

See also

a5_lonlat_to_cell() for the inverse operation, a5_cell_to_boundary() for full cell polygons.

Examples

cell <- a5_lonlat_to_cell(-3.19, 55.95, resolution = 5)
a5_cell_to_lonlat(cell)
#> <wk_xy[1] with CRS=OGC:CRS84>
#> [1] (-3.280745 56.43135)

# Data frame output
cell2 <- a5_lonlat_to_cell(114.8, 4.1, resolution = 5)
a5_cell_to_lonlat(cell2, as_dataframe = TRUE)
#>        lon      lat
#> 1 114.9474 4.191425