tiler
Tiler
Granularity Overview
"G" refers to granularity or grid density level of a tile or a tile-box
| G | # Tiles covering earth |
Breakdown | ~Width at the equator |
Info | Anchor Tile Northwest |
Hitch Southeast |
Eiffel’s Tile 48.858255,2.294491 |
|---|---|---|---|---|---|---|---|
| 1 | 100 | 10 x 10 | 4000 km | Basis | 100 | 199 | 153 |
| 2 | 10000 | 100 x 100 | 400 km | Encloses small countries | 20000 | 29999 | 25034 |
| 3 | 1000000 | 1000 x 1000 | 40 km | Encloses most major cities | 3000000 | 3999999 | 3506344 |
| 4 | 100000000 | 10000 x 10000 | 4 km | 400000000 | 499999999 | 450633440 | |
| 5 | 10000000000 | 100000 x 100000 | 400 m | 50000000000 | 599999999999 | 55063734402 | |
| 6 | 1000000000000 | 1000000 x 1000000 | 40 m | Street View | 6000000000000 | 6999999999999 | 6506373344021 |
| 7 | 100000000000000 | 10000000 x 10000000 | 4 m | Fits cars | 70000000000000 | 799999999999999 | 750637363440213 |
To find a tile for a latitude and longitude implement DT.find(lat,lng,g);
DT.find(48.858255,2.294491,6)
Returns an object with a tile number ‘6506373344021’ that delimts the tile with vertices a,b,c,d:
- x represents the distance in tiles from the anti-meridian
- y the distance from latitude 90°;
{
"valid": true,
"x": 506373,
"y": 344021,
"g": 6,
"_p": 6,
"_offset": 0,
"n": "6506373344021",
"a": (...),
"b": (...),
"c": (...),
"d": (...)
}
