Geovisualization and Time – New Opportunities for the Space–Time Cube - Geographic Visualization: Concepts, Tools and Applications - page 298

track of its geographic position over time. The prototype has been developed in JAVA
3D and makes use of the Udig open source GIS environment (http://udig.refractions.net/
confluence/display/UDIG/Home).
15.4.1 Sport (multiple linked views)
The first example is related to a sports event: running. Basic input is a GPS track which
contains information on time and location. In a multiple linked view environment a map
and a graph are linked to the cube. The first contains the track, and the second contains
heart-rate data (the upper line) and speed data (the lower line) collected simultaneously
with the GPS data. Figure 15.2 displays the views. The map in the cube has been moved
along the time axis. This moment in time is also highlighted in both map and graph. Steep
sections of the path indicate slower movement and correspond with drops in the graph.
The viewing environment allows one to compare different runs, for instance by plotting
Figure 15.2 The space-time cube in a multiple linked view environment. A running event is
displayed from different perspectives: (a) shows the track in the map; (b) shows a graph with the
runner heart rate data; (c) displays the space-time cube with the track as a path and the base map
with the path's footprint. The base map has been moved along the T -axis to a moment in time when
the runner reached the 6.1 km point (see lines connecting the three views)