Page 350 -

332 13 Cartography and Navigation

Fig. 13.8 Funda allows users to view maps with houses for sale that meet particular criteria, e.g.,
constraints related to size, volume, and pricing. The map shows the 53 houses for sale in the Dutch
town Hapert

Fig. 13.9 Road map showing traffic jams: the car icons indicate problem spots and congested
roads are highlighted. Modern navigation systems show such maps and, based on real-time traffic
information, alternative routes are suggested to avoid bottlenecks

The YAWL system [28, 97] provides a visualization framework able to map
pending work items and resources onto various maps, e.g., geographic maps, pro-
cess maps, and organizational maps. YAWL also defines various distance notions