The use of the landscape metaphor in understanding population data

In this paper we consider how viewing population distribution as a landscap e can aid our understanding of urban morphology and process. Such surfaces are characterised by a highly positively skewed distribution and usually ap pear 'spikey' when viewed obliquely. Two methods are suggested to overcome this problem, namely local and focal transformations. An alternative measur e of population density, that of linear density, is suggested as a way of n ormalising the data. Quadratic smoothing is suggested as a method of focal transformation that allows surface properties to be quantified and generali sed. With the Greater London area as an example, population surfaces are vi sualised in a variety of ways including animation. Properties of the surfac e such as slope and curvature are calculated and visualised. These help to describe the morphology of the London area population with respect to its e volution over time, planning regulation, and transport links. More sophisti cated properties of the surface including morphometric features and inverte d basins are identified and related to urban neighbourhoods.