Maps and mySociety

• Open sourced code, mostly closed source data
• Ordnance Survey
  • BoundaryLine – constituency boundaries
  • CodePoint – postcodes
  • Actual maps themselves
• Gaze, our public web gazeteer service, with a simple REST interface

Maps – Helmert Transform

• Multimap’s red-circle programmer understood co-ordinate transforms
• Multimap’s data entry people did not
• Railway stations’ co-ordinates miss out the reverse Helmert Transformation
• mySociety’s Geo::HelmertTransform lets people not worry about this.

Live Trains Map

• Fetches data from National Rail's Live Departure Boards
• The trains move in approximately real time
• http://www.traintimes.org.uk/map/

  

The End

Matthew Somerville
matthew@dracos.co.uk