OSGeodata: Unterschied zwischen den Versionen
Stefan (Diskussion | Beiträge) Keine Bearbeitungszusammenfassung |
Stefan (Diskussion | Beiträge) |
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:''Managing metadata well is the key to making a repository of open geographic data really useful and re-usable. Creating metadata can be a dull chore. Part of the problem is over-focus on production, rather than consumption; on standards, rather than on usage. The Geodata Committee at OSGeo has been working on a "simplest useful thing" approach to geographic metadata...''. (Citation from Jo Walsh) | :''Managing metadata well is the key to making a repository of open geographic data really useful and re-usable. Creating metadata can be a dull chore. Part of the problem is over-focus on production, rather than consumption; on standards, rather than on usage. The Geodata Committee at OSGeo has been working on a "simplest useful thing" approach to geographic metadata...''. (Citation from Jo Walsh) | ||
'''Therefore we urgently need a | '''Therefore we urgently need a [[OSGeodataMetadataModel| metadata information model]] | ||
as well as a | as well as a [[OSGeodataMetadataProtocol| metadata exchange protocol]] (see below).''' | ||
Keywords: ''Open access to and dissemination of geographic data (geodata) and information; Metadata; Finding, harvesting or discovery of geodata and web map services; Interoperability; Integration; Service binding; Spatial data infrastructure; Standards''. | Keywords: ''Open access to and dissemination of geographic data (geodata) and information; Metadata; Finding, harvesting or discovery of geodata and web map services; Interoperability; Integration; Service binding; Spatial data infrastructure; Standards''. | ||
Version vom 21. August 2006, 08:59 Uhr
Overview
These are experimental pages originated from OSGeodata Mailing List on OSGeo.org.
Let's finally unleash geographic information through open access and dissemination of geographic data and (metadata) search appliances!
- Managing metadata well is the key to making a repository of open geographic data really useful and re-usable. Creating metadata can be a dull chore. Part of the problem is over-focus on production, rather than consumption; on standards, rather than on usage. The Geodata Committee at OSGeo has been working on a "simplest useful thing" approach to geographic metadata.... (Citation from Jo Walsh)
Therefore we urgently need a metadata information model as well as a metadata exchange protocol (see below).
Keywords: Open access to and dissemination of geographic data (geodata) and information; Metadata; Finding, harvesting or discovery of geodata and web map services; Interoperability; Integration; Service binding; Spatial data infrastructure; Standards.
Need for a metadata information model
We definitively need first a metadata information model. Geographic catalog is rather data provider centric name for a system and a model, so we prefer a user centric 'metadata (information) model'. See OSGeodataMetadataModel for further discussion.
Need for a metadata exchange protocol
For general protocol requirements read OSGeodataMetadataProtocol. For proposals around the metadata information model requirements see OSGeodataMetadataModel. After having agreed on a better protocol there is also a need for a better name than 'Geographic Catalog Service or Protocol', like 'Geographic Metadata Harvesting Protocol'.
Weblinks
Information:
- Wiki at osgeo.org for requirements
- Geodata mailing list at osgeo.org for discussions
- Pleadings... Blog 1 - "Leight Weight Web Resource Catalogue", Blog 2 - More Simple Web Services Catalogues...", and Blog 3.
Geographic information search services:
- Catalogs:
- mapdex.org
- ESRI's geography network
- National Portals: US, CA, EU, UK, FR, DE, AT, CH
- Search engines:
- General: Google Maps, MSN live, Yahoo!
- Specialized: geometa.info (still german only for linguistic processing reasons)
- GIS with catalog and search components:
- uDig, ArcGIS, ...?