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Quick start
===========
In the XYZ tiling system, the region of the world from 85.0511 (more precisely:
``arctan(sinh(π))``) degrees south of the Equator to 85.0511 degrees north is
covered at zoom level 0 by a single tile. The number of tiles at each zoom
level is ``4 ** Z``. At zoom level 1, we have 4 tiles.
.. code-block:: none
+-------------+-------------+ 85.0511 deg N
| | |
| x: 0 | x: 1 |
| y: 0 | y: 0 |
| z: 1 | z: 1 |
| | |
+-------------+-------------+ 0.0 deg N
| | |
| x: 0 | x: 1 |
| y: 1 | y: 1 |
| z: 1 | z: 1 |
| | |
+-------------+-------------+ 85.0511 deg S
180.0 deg W 180.0 deg E
You can get the tile containing a longitude and latitude pair from the
``mercantile.tile`` function.
.. code-block:: pycon
>>> import mercantile
>>> mercantile.tile(-105.0, 40.0, 1)
Tile(x=0, y=0, z=1)
You can get the geographic (longitude and latitude) bounds of a tile from the
``mercantile.bounds`` function.
.. code-block:: pycon
>>> mercantile.bounds(mercantile.Tile(x=0, y=0, z=1))
LngLatBbox(west=-180.0, south=0.0, east=0.0, north=85.0511287798066)
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