timemapper using animated svg in a wms to visualise moving...
TRANSCRIPT
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TimeMapperusing animated SVG in a WMS to visualise moving object data
Timothée BeckerBarend Köbben<[email protected]>
http://geoserver.itc.nl/TimeMapper/
ITC – University of Twente, Faculty of Geo-Information Science and Earth Observation
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real-world phenomena are dynamic
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real-world phenomena are dynamic
we need tools to explore and see them dynamically
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our focus:
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our focus:vector animations
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our focus:vector animations
on the web
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our focus:vector animations
on the webgenerated automatically
from the data
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our choice:
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our choice:
ScalableVector
Graphics
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our choice:
ScalableVector
Graphics
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SVG:
XML / Open Web
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SVG:
XML / Open WebOpen Standard (W3C)
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SVG:
XML / Open WebOpen Standard (W3C)supported by all majorbrowsers now (IE9!)
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SVG:
standard includesSMIL
declarative animation
(Opera +, Webkit/FireFox ±)
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Prototype:
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Prototype:
moving object data
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Prototype:
moving object data
case-study on icebergs movements in Antarctica
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Prototype:
moving object data
case-study on icebergs movements in Antarctica
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Prototype based on:
ITC SDIlight OSGEO stack
RIMapperWMS
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SDIlight
....?
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SDI
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SDI
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SDIlight
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stack++
// //++
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RIMapperWMS:
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RIMapperWMS:spatial database back-end (postGIS)
spatial and attribute data
Web Mapping Service configuration
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RIMapperWMS:spatial database back-end (postGIS)
spatial and attribute data
Web Mapping Service configuration
server application (Java)responds to WMS compliant requests
provides output in SVG
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workflow:
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workflow:
Storing temporal dataDesigning SMIL animationsConverting temporal component Developing animated mapping GUI
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workflow:
Storing temporal data
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ISO 8601 extended format:
Schema: ccyy-mm-ddThh:mm:ss.sssZExample: 2009-01-28T13:53:41.007Z
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workflow:
Designing SMIL animations
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workflow:
Designing SMIL animations
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workflow:
Designing SMIL animations
movement
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workflow:
Designing SMIL animations
timing
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workflow:
Converting temporal component
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workflow:
Converting temporal component
2009-01-28T13:53:41Z
OGC SMIL
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• ISO 8601 to seconds since epoch
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• ISO 8601 to seconds since epoch
• subtract start-time
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• ISO 8601 to seconds since epoch
• subtract start-time
• multiply by temporal scale
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workflow:
Developing animated mapping GUI
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Animated mapping GUITemporal legends
• Cyclic• Digital clock• Time-bar
Interactive functionalities• User choices• Functions to control the temporal dimension
• Play/Pause• Time-slider• Looping• Speed-slider
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Demo Demo time!time!
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Acknowledgments:Conny BlokDita AnggraeniErik DahlströmHelder MagalhaesDavid DaileyFrank Bruder
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Questions?Questions?
http://geoserver.itc.nl/TimeMapper/http://geoserver.itc.nl/TimeMapper/
[email protected]@itc.nl