osm2gexf

converts OSM xml files to a network graph in GEXF format

Intro

This is a Python library which allows you to convert an OpenSteetMap (OSM) xml file into a GEXF file for import into Gephi, or other GEXF aware libraries.

The aim is to allow Street Network Analysis of OSM data using Gephi or other tools. This can then allow you to compute centralities, betweenness, eccentricity, etc.

An example can be found in demo.py

For larger OSM files I suggest you enable the 'network simplify', as shown in demo.py. This converts series of edges so that each series of edges between junctions is simplified to a single segment. This helps keep the network size down, at the cost of map aesthetics. For example, roundabouts with lots of line segments will be simplified into diamond shapes.

Dependencies

None on the python side, all libraries are built in

Optional but recommended : a tool or library to process gexf files Gephi - https://gephi.org/

Tips if using Gephi

If using Gephi, you'll want to install the GeoLayout optional plugin. This lets you see the network as a geographic map.

When importing the GEXF,

• change type to 'Undirected'
• uncheck 'add missing nodes'

When running this plugin, I suggest you use the following settings:-

• Latitude - lat
• Longitude - lon
• Scale - somewhere between 500000 and 15000000 (town/city size maps)