OpenStreetMap Roads

The package takes an openstreetmap pbf file and converts it to a geohash prefix based hdf5 file. It provides an api to then do a fast map matching for any latitude, longitude that comes under the bounding box of the pbf file.

Installation

pip install osm-roads

Importing and loading the pbf file

from osm_roads.osm_roads import OsmRoads

osm_roads=OsmRoads(hdf5_file_name="bengaluru.hdf5",openstreetmap_pbf_file_name="bengaluru.pbf")

Closing the file handler

Opening the HDF5 osm file

osm_roads=OsmRoads(hdf5_file_name="bengaluru.hdf5")

Search for map matching with latitude and longitude

osm_roads.get_closest_road(12.934005898750094, 77.61075025215672)

How to get PBF files and slice them

1. Visit the OpenStreetMap Wiki. The file used in the example is downloaded from GeoFabrik, one of the mirrors of OSM and sliced using Osmium Tool

2. Install the Osmium Tool (works well in linux). sudo apt-get install -y osmium-tool

3. Run "osmium extract -b 77.343833,13.159493,77.905509,12.830316 southern-zone-latest.osm.pbf -o bengaluru.pbf" (replace the bounding box lat,lons as per your need)