Tiledata2
From OpenStreetMap Wiki
An implementation of the Tile data server using protocol buffers as the storage mechanism (similar to PBF file format).
Contents |
Processing data
- uses SAX XML parser to read OSM XML files
- stores node and way locations into SQLite database (db.dat)
- turns POIs and ways into protocol buffer objects, and stores them in sqlite databases (poi.dat, way.dat)
- for each zoom-15 tile:
- adds all the ways which cross that tile to a protocol buffer object and stores it in a sqlite database (map.dat)
Using data
getMap.py contains a library to retrieve the data for any tile
mobileEncoding.py has sample functions to display the map objects
Structure
Defined in this file
Download
http://svn.openstreetmap.org/applications/utils/export/tiledata2/
Running
Convert protocol buffer definition into actual python code
pb/generate.sh
Parse the OSM file
initialParse.py < data.osm
Put all the ways into their tiles
generateTiles.py
See/share the results
ls -lh data/map.dat
Display a sample tile
from getMap import * printMap(getMap(16372,10891))
Use the data
from getMap import *
mapData = getMap(16372,10891)
for w in mapData.way:
for t in w.tag:
print "%s = %s" % (t.k, t.v)
for n in w.node:
print "%f, %f" % (n.lat, n.lon) # n.id also available
