This is day 14 of One CSV, 30 stories a series of articles exploring price paid data from the Land Registry found on GOV.UK. The code for this and the other articles is available as open source from GitHub
I think it was a great event, with some amazing hacks presented. My two favourite hacks had multidisciplinary teams build something, try it with users, realise it was the wrong thing, so built something better as a result. All in a single day!
For my part I tried to help one of the hacks consume the Land Registry INSPIRE index polygons by converting the GML format shapefiles into TopoJSON files. Unfortunately this took a lot of compute time, and both topojson and mapshaper kept running out of memory on my huge EC2 machine. You can see the code and some of the polygons in github.com/psd/landregistry-inspire-data
Tomorrow I hope to make another, similar poster based on the geographical data.