As information visualization tools arc used lo visualize datasets of increasing
size, there is a growing need for techniques that facilitate efficient navigation.
Pan and zoom navigation enables users to display areas of interest at different
resolutions. Fbcus+contexl techniques aim to overcome the drawbacks of pan
and zoom by dynamically integrating areas of interest and context regions. To
date, empirical comparisons of these two navigat ion paradigms have been limited
in scope and inconclusive.
In two controlled studies, we evaluated navigation techniques representative
of the pan and zoom and focus (-context approaches, 'the particular focus-(-
context technique examined was rubber sheet navigation, implemented in
a way that afforded a set of navigation actions similar to pan and zoom navigation.
The two techniques were used by 10 subjects in each study to perform
a navigation-intensive task in a large tree dataset. Study 1 investigated the
effect of the amount of screen real estate devoted to context regions for each
navigation technique. Performance with both techniques was not significantly
affected by this factor, but was influenced by technique-specific strategies developed
by subjects. Study 2 compared the performance of the two techniques.
Pan and zoom navigation was found to be faster than rubber sheet navigation
and was rated by subjects as easier and less mentally demanding. We discuss
the implications of these results, including the relationship between navigation
technique, task, and user strategy, and propose directions for fulure work. / Science, Faculty of / Computer Science, Department of / Graduate
| Identifer | oai:union.ndltd.org:UBC/oai:circle.library.ubc.ca:2429/17567 |
| Date | 05 1900 |
| Creators | Nekrasovski, Dmitry |
| Source Sets | University of British Columbia |
| Language | English |
| Detected Language | English |
| Type | Text, Thesis/Dissertation |
| Rights | For non-commercial purposes only, such as research, private study and education. Additional conditions apply, see Terms of Use https://open.library.ubc.ca/terms_of_use. |
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