With the arrival of OS Open Data I thought I’d dust off my old skool data skills in an attempt to create the first derived dataset from OS Open Data. Using our GO Publisher product I mashed OS Code-Point Open with the WOEIDs of Yahoo! GeoPlanet Data and created a derived product in KML , here’s the detail …

1) First things first, make sure that historic open data licence is covered in the header …

os-open-data-licence.gif

2) Convert to KML (something a little more internet friendly than the default CSV)

3) Sort out the spacing on the Code-Point Open Post Code making it single spaced.

4) Convert the coordinate system to WGS84. Note: Where the Positional Quality value of 90 (geometry unknown – usually 0.0, 0.0) there is NO Point geometry. You’ll notice that the Post Code value is in the kml:address tag and so if you display in Google Earth it will geocode any missing geometry on the fly for you.

5) Put all the Code-Point Open properties in the kml:ExtendedData tag

6) Process the Post Code to create a new Out Code property also in kml:ExtendedData

7) The cool bit … Cross reference the post code to Yahoo! GeoPlanet Place postcode, attaching woeid and parentWoeid to the original OS Code-Point Open data.

All credit goes out to our GO Publisher Community Edition product which let me do all of this so quickly. Here’s some screenshots and there’s some sample data for comment at the end of the post.

gopublisher_osopendata.gifos-code-point-open-southamp.gif

You can access the first cut sample data here.

Just click on the link and it should open up in Google Earth, if not open Google Earth first then click on the link.

I’ll put this sample out for comment, if people are happy with it I’ll create a national set for you all.

Enjoy

Ian