A comparison of input devices in element pointing and dragging tasks
CHI '91 Proceedings of the SIGCHI Conference on Human Factors in Computing Systems
Extending Fitts' law to two-dimensional tasks
CHI '92 Proceedings of the SIGCHI Conference on Human Factors in Computing Systems
Improving menu placement strategies for pen input
GI '04 Proceedings of the 2004 Graphics Interface Conference
A probabilistic approach to modeling two-dimensional pointing
ACM Transactions on Computer-Human Interaction (TOCHI)
| Hi-index | 0.00 |
Many studies have found the performance of using nonkeyboard input devices (NKID) was affected by motion environment, but few of them have considered the interaction between motion direction and the approach angle on manipulating NKID. In this study, an experiment was conducted to investigate the effect of different approach angles (0o, 45o, 90o, 135o, 180o, 225o, 270o, 315o, 360o) and motion directions (roll and pitch) on the performance (movement time and error rate) of using trackball. The results showed that the main effect of approach angle on movement time was significant, whereas there was neither significant interaction nor the main effect of motion direction. The effects of approach angle and motion direction on the error rate were not significant. Some suggestions on the control console and interface design were proposed based on the results of the experiment.