Fishery View Improvement of Time Series Line Chart Visualization of Fishery Data CPSC 533C Final Presentation Ying Zhang & Lan Wu December 19 th 2005

Background: Ecopath: Line chart system developed by UBC Fishery Department No fish is an island

Motivation: Too many time series gathered Curves overlapping and information overload

Data: Focus: 45 fishes –The diet matrix (45 by 45 mat) –Their population at 648 discrete time points before and after fishing strategy applied (two 45 by 648 mat)

Task and Infovis Solution 1: Task: Find the related fishes of a specific fish Solution: Brushing and highlighting

Task and Infovis Solution 2: Task: Evaluate the effect of human’s fishing Solution: Difference graph

Task and Infovis Solution 3: Task: Find the patterns fish populations match Solution: Clustering

High Level Implementation: Programming Platform: Visual Studio.Net Graphics Package: Zedgraph Clustering Algorithm – Distance Measure: (Root Mean Square)

Demo coming~

Unfinished/Future Work: Repeated Colors Overlapping reduced but still not eliminated Code Optimization More user interaction

Lessons learned: Understanding users’ preferences Developing based on an existing framework or using a visualization package

Thank you ! ?