2 contributing

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ICRC GIS officers - 24/08/2010 Frédéric Bonifas [email protected] Openstreetmap Contributing

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ICRC GIS officers - 24/08/2010Frédéric [email protected]

OpenstreetmapContributing

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Data sources

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GPS

● Historical source of data● Especially useful in rural areas● Allow WMS layer rectification● The more we get tracks, the more the map will

be accurate.

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Aerial imagery

● Easy tracing of linear and area features

● Imagery currently used :● Yahoo (big cities)● Landsat● Special cases : Haiti, Gaza, Kyrgyzstan, Pakistan...

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Imports

● PGS coastlines● CIA World Databank boundaries● AND donated data in the Netherlands● TIGER data in the USA● etc

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Other maps

● Compliant license needed (PD)● Example : CIA maps

→ Perry-Castañeda Library Map Collection

http://www.lib.utexas.edu/maps/

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Local knowledge

● Most valuable source of data● accurate● up-to-date● many details (street names, POIs...)

● But also most difficult to find● contributions mainly in Europe and urban areas● areas without data are often where technology is

the less spread

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Softwares

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JOSM

● Powerful Java desktop editor● WMS integration● Data quality checks● Plugins to add tools● Custom preset attributes

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JOSM

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Potlatch

● Flash online editor● WMS integration● Easy editing● Difficult to handle large amount of data

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Potlatch

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Potlatch 2

● Future live OSM editor● Written in Flash● Easily configurable and deployable

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Potlatch2

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Custom Potlatch2

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Simple Map Editor (GSoC 2010)

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Walking Papers

● Take notes on existing map● Automatic orthorectification● Edition on top of the annotated map

→ Everyone can participate

→ http://walking-papers.org/

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Take notes

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JOSM editing

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Before/After

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Data quality

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Geometry and tagging control

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Geometry and tagging control

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Mapping completeness