Design of An Visualization Solution for Analyzing Spatio-Temporal Cycling Trajectory Data

Analyzing spatio-temporal movement data is very popular and useful in urban studies.As one type of movement data,cycling trajectory data bring more opportunities for analysts to get insight into spatio-temporal information from different perspectives.Visualization is a useful tool which could be used by people to represent and explore the data,such as extracting spatial patterns.However,some existing visualization solutions have limitations that cannot assist people to do these works very well.So this research aims to find their limitations and design improved visualization solutions to help users exploring and analyzing data better.The stage of user research that investigates these limitations and acquires users' requirements with actual users is a very important part of the research.The recommendations of improved visualization solutions are made on the basis of the findings and results of this stage.In this work,several usability testing methods are applied to observe and evaluate how users use the existing visualization application BikePRINT to answer their analytical questions and complete their tasks.Firstly,questionnaire were sent to users to acquire their needs and interests.Then,5 participants were invited to do analytical tasks under the recording.The results were analyzed and limitations of BikePRINT were Figured out.After that,improved visualization solutions were designed from three aspects according to the results of the user research: Accessing data,Visualization of accessed data and other functionality.These solutions were presented to and discussed with users and the developer in the focus group discussion.They gave comments,preferences and suggestions about these solutions.Accordingly,the final solutions were made sure.