This map, which didn’t quite make it into Housing in London 2012, shows total net conventional housing completions between 2007/08 and 2010/11 in London, aggregated using an artificial hexagonal grid in Quantum GIS. This type of grid can be useful for aggregating point data, though it still suffers from the usual problems of shaded maps in that variation within the classes is lost.
The data comes from the London Development Database maintained by the GLA and comprising data provided by the London boroughs. My colleagues in the GLA GIS team have made an excellent interactive map for exploring LDD data, which you can find here.
This map shows the period when median home was built by Middle Super Output Area in London. It is based on this data published by the Valuation Office Agency and was made in QGIS.
This map shows the broad mix of transport modes Londoners use to get to work, according to the 2011 Census. It uses RGB space to show the share of car/van/taxi/motorbike (in red), cycling/walking (in green) and public transport (in blue).
A couple of notes / caveats: it is based on place of residence rather than place of work, so the central area is green rather than blue because city centre residents tend to walk while city centre workers tend to get public transport. And it shows the main mode of transport so will tend to exclude short journey stages such as walking to or from public transport.
The map was made in R, and was inspired by James Cheshire’s maps of voting patterns.