The Role of Layout and Order in Treemaps for Showing Spatial and Temporal Variation in House Prices

Figure 1: Squarified treemaps summarise the dataset by category through alternative hierarchies. (a) year»month; (b) type»year»month; (c) postcode»type. Local linear colour schemes are used (ColorBrewer “Oranges”; http://www.colorbrewer.org/) and ordering is by size from top left to bottom right. The house price data are Crown copyright (Land Registry) and were retrieved from http://www.houseprices.co.uk/.