Geoscience Reference
In-Depth Information
Fig. 4
An air quality visualization technique
Fig. 5
Description of the
output rendering of an
air quality visualization
technique
As previously seen, the tasks can be organized in high-level tasks composed
of low-level tasks (Lee et al.
2006
). The urban tasks performed by the users can
be considered as high-level tasks. Performing them implies navigation tasks or
access-to-data tasks in the 3D model (visual tasks). Thus, the user task
Analysis of
pedestrian behaviour
implies retrieving the highest (or lowest values) of a repre-
sentation of integer type. In order to determine precisely the access-to-data tasks,
