supporting the visual analysis of the behaviour of gulls aidan slingsby (city university london)...
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Supporting the Visual Analysisof the Behaviour of Gulls
Aidan Slingsby (City University London)(hosted by Emiel van Loon, University of Amsterdam)
Short Term Scientific Mission COST-STSM-IC0903-7590
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User-centred process
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Current practice
Already extensive use of interactive visualisationMatlab/RCustom Google Earth based tool
Shortcomings (Google Earth based tool)Cumbersome filteringTime and space doesn’t link together wellCannot produce density estimatesDifficult to explore by over time and by day/weekCannot load many data
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Visualisation awareness
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Initial Requirements
High-resolution maps/aerial imageryDensity estimatesExplore over time, day/week and sunrise/sunsetLoad many data pointsBe able to query individual data valuesLoad any data in agreed data format
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Initial tasks
Infer behaviour along its trackIdentify revisited locations, where and whenRecognise temporal cyclesExtrapolate trajectories (based on heading/wind)Identify home ranges.Identify key places/timesFind out long birds stay somewhereAnalyse resource use and time expenditure
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Prototype
Live demoSimilar to https://vimeo.com/71347204)
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Functionality, ranked by utility
1. Zoomable timeline2. Hour/day/year lines on
the timeline3. GPS points coloured by
individual4. Persistent highlighting5. Satellite imagery6. Save view with comments
7. Time relative to sunrise/sunsets
8. Speed, temperature and distance from nest on timeline
9. Attribute selection10. Helpscreen
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Tasks, ranked by (perceived) success
1. Identify revisited locations, where and when2. Find out long birds stay somewhere3. Recognise temporal cycles4. Identify home ranges5. Identify key places/times6. Infer behaviour along its track
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3 months later…
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Task evaluation scores
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Outcomes
Helped validate and improve our user-centred processResulted in a tool that the group still use for exploring new dataResulted in a code-base that has been extensively used on other projectsHas already resulted in further funded work between the two groups and we have plans to carry on working together
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Acknowledgements
Thanks to:staff at IBED, particularly Emiel van Loon, Judy Shamoun-Baranes, Adriaan Dokter and Willem BoutenMOVE-COST for funding this Short Term Scientific Mission (COST-STSM-IC0903-7590).