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open roads

A collection of 3 posts

The QGIS Road Graph plugin
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

  • Ross McDonald
Ross McDonald May 13, 2015 • 3 min read
Improving pgRouting Performance
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.

  • Ross McDonald
Ross McDonald May 11, 2015 • 4 min read
pgRouting and OS Open Roads
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

  • Ross McDonald
Ross McDonald May 7, 2015 • 4 min read
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