[Talk-GB] Composite mapping (OSM and OS, PRoWs etc)

Ed Loach edloach at gmail.com
Wed Sep 7 10:02:37 UTC 2016

I’m not sure which of your data sources give which bit of your rendering, but at about TM 151 312 (and I can’t get search by grid reference to find this location – slightly NE of Bradfield, Essex) you have both the correct route for the Essex Way (as in OSM, here-ish http://osm.org/go/0EHx9iB1-- ) where it has been diverted north and south of where it passes under the railway, and also show the pre-diverted footpaths (not in OSM) which used to cross the fields diagonally.


But generally I think it looks great.




PS: I just tried searching for the grid reference without spaces, and then it seemed to work.


From: Luke Smith [mailto:luke.smith at grough.co.uk] 
Sent: 06 September 2016 16:03
To: talk-gb at openstreetmap.org
Subject: [Talk-GB] Composite mapping (OSM and OS, PRoWs etc)


I mentioned a while back that grough was developing a composite map, blending OSM data with OS OpenData to fill in the gaps, and using public rights of way data directly from the local authorities which have released it. Over time, hopefully we will rely progressively less on other data sources.


I'm happy to say there's now a beta available, at http://geo.gy/ with more details about the project at http://map.grough.co.uk/. 


There'll also soon be a 3D version available, building on the prototype at http://3d.geo.gy/ to cover all of Great Britain and improve the controls.


The source code behind generating the maps is open source, although not suitable for on-the-fly tile generation because of the preprocessing. The idea was to create a map which could be printed and used at a fixed scale (1:25,000 scale), with labels moved around to avoid obscuring detail etc.


If anyone has comments or advice for us, it would be gratefully received. We're aware of some issues already, so this is only a beta release. Similarly if anyone would like to use the maps, we'd be more than happy to help if you run into problems.




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