pgrouting The QGIS Road Graph plugin QGIS offers a plugin that will solve a shortest path problem across any vector polyline layer in any format - the Road Graph plugin. The advantage of using this plugin over pgRouting is that you don't need to do anything special to your polyline layer to route across it. As
pgrouting Improving pgRouting Performance The Network I've loaded up the new Open Roads network dataset from Ordnance Survey into PostGIS and got it working with pgRouting. I can route successfully from A to B across the network. The problem is that it is so slow. There are 3.18 million road links and 2.
ordnance survey pgRouting and OS Open Roads Get the data you need from OS: http://www.ordnancesurvey.co.uk/business-and-government/products/os-open-roads.html Load the data into PostGIS using QGIS or pgAdmin or ogr2ogr - your choice. This takes some time to process as there are a large number links making up the network: 3.6 million
