Ordnance Survey Linked Data

[John Goodwin]

Hi,

Ordnance Survey now has some "linked" data up at:

data.ordnancesurvey.co.uk

This data includes identifiers and names for the administrative and
voting areas of Great Britain. Explicit geometries are not included in
the RDF, but there are topological relationships included between
regions which should be of use for many applications.

For a given region there are containment, overlap and spatial
equivalence relations given between it and other regions. Furthermore,
bordering information is given between "similar" entities. For
example, explicit bordering information is given between wards. There
is also bordering information between unitary authorities, counties
etc.

If you wish to see the boundary on a map then area code and unit ID
attributes can be used in the OS OpenSpace API to display the
boundary.

So for example, for Southampton (http://data.ordnancesurvey.co.uk/id/
7000000000037256) the area code is UTA (for unitary authority) and the
unit ID is 37256. These values can be used as follows:

/*here we set-up the our variable called 'boundaryLayer' with the
strategies that we require.
In this case, it is its ID and type i.e. Unitary Authority */
boundaryLayer = new OpenSpace.Layer.Boundary("Boundaries", {
strategies: [new OpenSpace.Strategy.BBOX()],
admin_unit_ids: ["37256"],
area_code: ["UTA"]
});
//then we add the bounadry to the map
osMap.addLayer(boundaryLayer);
//this effectively refreshes the map, so that the boundary is
visible
osMap.setCenter(osMap.getCenter());

to display the Southampton boundary. See http://openspace.ordnancesurvey.co.uk/openspace/support.html
for more details.

John

(apologies for any typos but this was written whilest jetlagged)