nst / gmap_tiles Goto Github PK

Download and merge Google Maps tiles

Python 100.00%

gmap_tiles's Introduction

Download Google Maps tiles

Edit download_tiles.py to specify the area and the zoom level you want.

zoom = 15

lat_start, lon_start = 46.53, 6.6
lat_stop, lon_stop = 46.49, 6.7

satellite = True    # roads if false

You can easily find coordinates with https://getlatlong.net/.

Then, run $ python download_tiles.py and get individual tiles:

...
15_16989_11588_s.jpg
15_16989_11589_s.jpg
15_16989_11590_s.jpg
...

Merge Google Maps tiles

Edit merge_tiles.py to specify the area and the zoom level you want, it's just the same as before.

zoom = 15

lat_start, lon_start = 46.53, 6.6
lat_stop, lon_stop = 46.49, 6.7

satellite = True    # roads if false

Then, run $ python merge_tiles.py and get map_s.jpg for satellite or map_r.png for roads.

Note: merging the tiles requires Python Image Library.

Swiss Topo Tiles

You can do the same with Swiss Topo maps: https://www.github.com/nst/swiss_topo_tiles.

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gmap_tiles's Issues

wrong url : Error 404 / line 28

Instead of (line 28) :
url = "http://khm1.google.com/kh?v=87&hl=en&x=%d&y=%d&z=%d" % (x, y, zoom)

Replace it by (line 28) :
url = "http://khm2.google.com/kh/v=708&s=Gal&x=%d&y=%d&z=%d" % (x, y, zoom)

the code doesn't work when the longitude is bigger or negative values

Hi, the code doesn't work when the longitude is bigger or negative values. I didn't know what's wrong. It is really confusing.

No License Specified

Could you please add a license to the repo so others can contribute to it? :)

Merge Tiles not working for zoom level >=18

Hi I tried your code merge_tiles.py it is working just fine till zoom level 17 but for zoom level 18 the code is giving memory errors.
Kindly guide me on how to resolve this issue.

Error is:
Traceback (most recent call last):
File "E:\maps\merge_tiles.py", line 58, in
merge_tiles(zoom, lat_start, lat_stop, lon_start, lon_stop, satellite=True)
File "E:\maps\merge_tiles.py", line 24, in merge_tiles
result = Image.new("RGB", (w, h))
File "C:\Users...\AppData\Local\Programs\Python\Python37\lib\site-packages\PIL\Image.py", line 2505, in new
return im._new(core.fill(mode, size, color))
MemoryError

[UPDATE] Working for Python3

Here is download_tiles.py for Python3:

#!/usr/bin/python

import urllib.request as urllib2
import os, sys
from gmap_utils import *

import time
import random

def download_tiles(zoom, lat_start, lat_stop, lon_start, lon_stop, satellite=True):

    start_x, start_y = latlon2xy(zoom, lat_start, lon_start)
    stop_x, stop_y = latlon2xy(zoom, lat_stop, lon_stop)
    
    print ("x range", start_x, stop_x)
    print ("y range", start_y, stop_y)
    
    user_agent = 'Mozilla/5.0 (Macintosh; U; Intel Mac OS X 10_6_8; de-at) AppleWebKit/533.21.1 (KHTML, like Gecko) Version/5.0.5 Safari/533.21.1'
    headers = { 'User-Agent' : user_agent }
    
    for x in range(start_x, stop_x):
        for y in range(start_y, stop_y):
            
            url = None
            filename = None
            
            if satellite:        
                url = "http://khm2.google.com/kh/v=708&s=Gal&x=%d&y=%d&z=%d" % (x, y, zoom)
                filename = "%d_%d_%d_s.jpg" % (zoom, x, y)
            else:
                url = "http://mt1.google.com/vt/lyrs=h@162000000&hl=en&x=%d&s=&y=%d&z=%d" % (x, y, zoom)
                filename = "%d_%d_%d_r.png" % (zoom, x, y)    
    
            if not os.path.exists(filename):
                
                bytes = None
                
                try:
                    req = urllib2.Request(url, data=None, headers=headers)
                    response = urllib2.urlopen(req)
                    bytes = response.read()
                except Exception as e:
                    print ("--", filename, "->", e)
                    sys.exit(1)
                
                if bytes.startswith(b"<html>"):
                    print ("-- forbidden", filename)
                    sys.exit(1)
                
                print ("-- saving", filename)
                
                f = open(filename,'wb')
                f.write(bytes)
                f.close()
                
                time.sleep(1 + random.random())

if __name__ == "__main__":
    
    zoom = 15

    lat_start, lon_start = 46.53, 6.6
    lat_stop, lon_stop = 46.49, 6.7
        
    download_tiles(zoom, lat_start, lat_stop, lon_start, lon_stop, satellite=True)

invalid syntax

when I run the script I get following error:
$ python download_tiles.py
File "download_tiles.py", line 42
except Exception, e:
^

I'm on py3, maybe that's the issue

nst / gmap_tiles Goto Github PK

gmap_tiles's Introduction

Download Google Maps tiles

Merge Google Maps tiles

Swiss Topo Tiles

gmap_tiles's People

Contributors

Stargazers

Watchers

Forkers

gmap_tiles's Issues

wrong url : Error 404 / line 28

the code doesn't work when the longitude is bigger or negative values

No License Specified

Merge Tiles not working for zoom level >=18

[UPDATE] Working for Python3

invalid syntax

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