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Fishery View Improvement of Time Series Line Chart Visualization of Fishery Data CPSC 533C Final Presentation Ying Zhang & Lan Wu December 19 th 2005
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Background: Ecopath: Line chart system developed by UBC Fishery Department No fish is an island
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Motivation: Too many time series gathered Curves overlapping and information overload
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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)
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Task and Infovis Solution 1: Task: Find the related fishes of a specific fish Solution: Brushing and highlighting
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Task and Infovis Solution 2: Task: Evaluate the effect of human’s fishing Solution: Difference graph
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Task and Infovis Solution 3: Task: Find the patterns fish populations match Solution: Clustering
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High Level Implementation: Programming Platform: Visual Studio.Net Graphics Package: Zedgraph Clustering Algorithm – Distance Measure: (Root Mean Square)
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Demo coming~
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Unfinished/Future Work: Repeated Colors Overlapping reduced but still not eliminated Code Optimization More user interaction
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Lessons learned: Understanding users’ preferences Developing based on an existing framework or using a visualization package
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Thank you ! ?
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