OSM Tile Loader¶

In [1]:

from srai.loaders.osm_loaders import OSMTileLoader
from srai.regionalizers import geocode_to_region_gdf

ZOOM = 9

from srai.loaders.osm_loaders import OSMTileLoader from srai.regionalizers import geocode_to_region_gdf ZOOM = 9

Get tiles from tile server¶

In order to get tiles use load method. Method load returns GeoDataFrame object with images or path to them, as chosen data_collector. Returned frame contains also geographical coordinates of tile and x, y, z coordinates used by tile servers.

In [2]:

loader = OSMTileLoader("https://tile.openstreetmap.de", zoom=ZOOM, verbose=True)
gdf = geocode_to_region_gdf("Wroclaw, Poland")
tiles = loader.load(gdf)
tiles

loader = OSMTileLoader("https://tile.openstreetmap.de", zoom=ZOOM, verbose=True) gdf = geocode_to_region_gdf("Wroclaw, Poland") tiles = loader.load(gdf) tiles

Getting tile from url: https://tile.openstreetmap.de/9/279/170.png
Getting tile from url: https://tile.openstreetmap.de/9/279/171.png
Getting tile from url: https://tile.openstreetmap.de/9/280/170.png
Getting tile from url: https://tile.openstreetmap.de/9/280/171.png

Out[2]:

	x	y	geometry	z	tile
region_id
279_170_9	279	170	POLYGON ((16.87500 51.61802, 16.87500 51.17934...	9	<PIL.PngImagePlugin.PngImageFile image mode=P ...
279_171_9	279	171	POLYGON ((16.87500 51.17934, 16.87500 50.73646...	9	<PIL.PngImagePlugin.PngImageFile image mode=P ...
280_170_9	280	170	POLYGON ((17.57812 51.61802, 17.57812 51.17934...	9	<PIL.PngImagePlugin.PngImageFile image mode=P ...
280_171_9	280	171	POLYGON ((17.57812 51.17934, 17.57812 50.73646...	9	<PIL.PngImagePlugin.PngImageFile image mode=P ...

To get records conveniently use SlippyMapId

In [3]:

tiles.loc[f"279_170_{ZOOM}"]["tile"]

tiles.loc[f"279_170_{ZOOM}"]["tile"]

---------------------------------------------------------------------------
KeyError                                  Traceback (most recent call last)
File /opt/hostedtoolcache/Python/3.10.13/x64/lib/python3.10/site-packages/PIL/JpegImagePlugin.py:639, in _save(im, fp, filename)
    638 try:
--> 639     rawmode = RAWMODE[im.mode]
    640 except KeyError as e:

KeyError: 'P'

The above exception was the direct cause of the following exception:

OSError                                   Traceback (most recent call last)
File /opt/hostedtoolcache/Python/3.10.13/x64/lib/python3.10/site-packages/PIL/Image.py:643, in Image._repr_image(self, image_format, **kwargs)
    642 try:
--> 643     self.save(b, image_format, **kwargs)
    644 except Exception as e:

File /opt/hostedtoolcache/Python/3.10.13/x64/lib/python3.10/site-packages/PIL/Image.py:2413, in Image.save(self, fp, format, **params)
   2412 try:
-> 2413     save_handler(self, fp, filename)
   2414 except Exception:

File /opt/hostedtoolcache/Python/3.10.13/x64/lib/python3.10/site-packages/PIL/JpegImagePlugin.py:642, in _save(im, fp, filename)
    641     msg = f"cannot write mode {im.mode} as JPEG"
--> 642     raise OSError(msg) from e
    644 info = im.encoderinfo

OSError: cannot write mode P as JPEG

The above exception was the direct cause of the following exception:

ValueError                                Traceback (most recent call last)
File /opt/hostedtoolcache/Python/3.10.13/x64/lib/python3.10/site-packages/IPython/core/formatters.py:344, in BaseFormatter.__call__(self, obj)
    342     method = get_real_method(obj, self.print_method)
    343     if method is not None:
--> 344         return method()
    345     return None
    346 else:

File /opt/hostedtoolcache/Python/3.10.13/x64/lib/python3.10/site-packages/PIL/Image.py:661, in Image._repr_jpeg_(self)
    656 def _repr_jpeg_(self):
    657     """iPython display hook support for JPEG format.
    658 
    659     :returns: JPEG version of the image as bytes
    660     """
--> 661     return self._repr_image("JPEG")

File /opt/hostedtoolcache/Python/3.10.13/x64/lib/python3.10/site-packages/PIL/Image.py:646, in Image._repr_image(self, image_format, **kwargs)
    644 except Exception as e:
    645     msg = f"Could not save to {image_format} for display"
--> 646     raise ValueError(msg) from e
    647 return b.getvalue()

ValueError: Could not save to JPEG for display

Out[3]:

Get one tile¶

In [4]:

loader = OSMTileLoader("https://tile.openstreetmap.de", zoom=2)
tile = loader.get_tile_by_x_y(2, 1)
tile

loader = OSMTileLoader("https://tile.openstreetmap.de", zoom=2) tile = loader.get_tile_by_x_y(2, 1) tile

---------------------------------------------------------------------------
KeyError                                  Traceback (most recent call last)
File /opt/hostedtoolcache/Python/3.10.13/x64/lib/python3.10/site-packages/PIL/JpegImagePlugin.py:639, in _save(im, fp, filename)
    638 try:
--> 639     rawmode = RAWMODE[im.mode]
    640 except KeyError as e:

KeyError: 'P'

The above exception was the direct cause of the following exception:

OSError                                   Traceback (most recent call last)
File /opt/hostedtoolcache/Python/3.10.13/x64/lib/python3.10/site-packages/PIL/Image.py:643, in Image._repr_image(self, image_format, **kwargs)
    642 try:
--> 643     self.save(b, image_format, **kwargs)
    644 except Exception as e:

File /opt/hostedtoolcache/Python/3.10.13/x64/lib/python3.10/site-packages/PIL/Image.py:2413, in Image.save(self, fp, format, **params)
   2412 try:
-> 2413     save_handler(self, fp, filename)
   2414 except Exception:

File /opt/hostedtoolcache/Python/3.10.13/x64/lib/python3.10/site-packages/PIL/JpegImagePlugin.py:642, in _save(im, fp, filename)
    641     msg = f"cannot write mode {im.mode} as JPEG"
--> 642     raise OSError(msg) from e
    644 info = im.encoderinfo

OSError: cannot write mode P as JPEG

The above exception was the direct cause of the following exception:

ValueError                                Traceback (most recent call last)
File /opt/hostedtoolcache/Python/3.10.13/x64/lib/python3.10/site-packages/IPython/core/formatters.py:344, in BaseFormatter.__call__(self, obj)
    342     method = get_real_method(obj, self.print_method)
    343     if method is not None:
--> 344         return method()
    345     return None
    346 else:

File /opt/hostedtoolcache/Python/3.10.13/x64/lib/python3.10/site-packages/PIL/Image.py:661, in Image._repr_jpeg_(self)
    656 def _repr_jpeg_(self):
    657     """iPython display hook support for JPEG format.
    658 
    659     :returns: JPEG version of the image as bytes
    660     """
--> 661     return self._repr_image("JPEG")

File /opt/hostedtoolcache/Python/3.10.13/x64/lib/python3.10/site-packages/PIL/Image.py:646, in Image._repr_image(self, image_format, **kwargs)
    644 except Exception as e:
    645     msg = f"Could not save to {image_format} for display"
--> 646     raise ValueError(msg) from e
    647 return b.getvalue()

ValueError: Could not save to JPEG for display

Out[4]: