A three-dimensional network-based space-time prism
Abstract
Time-geographic concepts are effective tools for the geovisualization of human activity patterns and to assess individual accessibility. In their traditional form, however, time-geographic concepts assume uniform travel velocities in an isotropic and homogeneous space. Because transportation systems confine travellers to links of road and rail networks with time-varying flows, these premises are typically unsatisfied in real-world situations. This paper provides an innovative approach to ameliorate the realism and applicability of space-time prisms by developing new three-dimensional space-time objects. Three-dimensional solid models which account for non-uniform movement are discussed, and their usefulness is assessed and illustrated by means of an example.
- Publication:
-
Journal of Geographical Systems
- Pub Date:
- March 2008
- DOI:
- 10.1007/s10109-007-0057-x
- Bibcode:
- 2008JGS....10...89N