Convert world coordinates to tile coordinates

Tiles are 0.1x0.1 degree regions containing the actual embedding data. Tile centers are on 0.05-degree offsets (e.g., -0.05, 0.05, 0.15, etc.).

Usage

tile_from_world(lon, lat)

Arguments

lon

Longitude in decimal degrees

lat

Latitude in decimal degrees

Value

Named list with tile_lon and tile_lat (center coordinates)

Examples

tile_from_world(0.17, 52.23)  # Returns (0.15, 52.25)
#> $tile_lon
#> [1] 0.15
#> 
#> $tile_lat
#> [1] 52.25
#> 
tile_from_world(-0.1, 51.3)   # Returns (-0.15, 51.25)
#> $tile_lon
#> [1] -0.05
#> 
#> $tile_lat
#> [1] 51.35
#>