The Bartlett Centre for Advanced Spatial Analysis


CASA Working Paper 59


1 November 2002

Techniques for augmenting the visualisation of dynamic raster surfaces

Despite their aesthetic appeal and condensed nature, dynamic raster surface representations such as a temporal series of a landform and an attribute series of a socio-economic attribute of an area, are often criticised for the lack of an effective information delivery and interactivity.

In this work, we readdress some of the earlier raised reasons for these limitations - information-laden quality of surface datasets, lack of spatial and temporal continuity in the original data, and a limited scope for a real-time interactivity. We demonstrate with examples that the use of four techniques namely the re-expression of the surfaces as a framework of morphometric features, spatial generalisation, morphing, graphic lag and brushing can augment the visualisation of dynamic raster surfaces in temporal and attribute series.

This working paper is available as a PDF. The file size is 1,083KB.

Authors: Sanjay Rana, Jason Dykes

Publication Date: 1/11/2002

Download working paper No. 59.