Difference between revisions of "Geodata Repository"

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= Why should OSGeo be running a geodata repository? =
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''The notes on the [Talk:Geodata_Repository Talk page for this page] describe the background to this project''
  
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* Without data, Open Source Geospatial Software isn't much use.
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= Data sources =
  
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* OSGeo has been generously offered use of the facilities at Telascience - http://osgeo.telascience.org/ - which is already mirroring a lot of public domain sources
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Sources of public geodata for initial setup in a repository.
  
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* The telascience facilities can be used to host sample applications for the software projects, to demonstrate different interfaces; this is a showcase for the OSGeo software projects and open standards that they support.
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== VMap0 ==
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* The [[Geodata Discovery Working Group]] needs a good selection of data sources to motivate discussion of indexing and search; the [[Geodata Packaging Working Group]] needs high-quality data and metadata to produce [[Education_and_Curriculum_Committee|educational]] packages from.
 
  
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* This is a service OSGeo can usefully offer to anyone who wants a safe home for their data in the future.
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* PostGIS storage for vector data.  
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* Geoserver as a WFS
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* Ongoing generation of per-country and per-region shapefiles; distribution via HTTP and via geotorrents.org
  
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= Data sources =
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=== Status ===
  
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These are suggestions that have been offered to the group so far.
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== Blue Marble NG ==
  
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== Well-known sources of publically collected and maintained geodata ==
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* Mapserver as WMS
  
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See list maintained at [[Geodata Discovery Working Group]]
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=== Status ===
  
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== Lesser known or less widely distributed sources of publically collected geodata ==
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== SRTM ==
  
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* Local government departments which are putting geodata into the public domain (MassGIS, Manitoba, MetroGIS)
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=== Status ===
  
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== Privately contributed / collectively constructed geodata ==
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== Landsat-7 ==
  
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* [http://openstreetmap.org/ OpenStreetmap] makes data available through a [http://wiki.openstreetmap.org/index.php/REST HTTP based XML interface]. They've also been getting requests for shapefile and GML output of their data.
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* Mapserver as WMS
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* Telascience already serving the raw data - http://onearth.telascience.org/
  
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= No data without metadata! =
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A full list of suggestions for public domain data sets that are nice-to-haves is maintained at [[Geodata Discovery Working Group]]
  
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An important factor for telascience is to have better metadata management facilities, and this is something that OSGeo's collective intelligence can really help with. During their [http://katrina.telascience.org/ data support efforts for Katrina hurricane relief] data was being collected in "a very ad-hoc fashion". To be sure that OSGeo has the rights to redistribute data that it collects, a base level of metadata indicating contact details and license terms has to be established.
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== Metadata ==
  
 
* [[Geodata Metadata Requirements]] - a baseline for what would be asked for / expected of data sets in an OSGeo repository
 
* [[Geodata Metadata Requirements]] - a baseline for what would be asked for / expected of data sets in an OSGeo repository
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* A simple metadata-in-GeoRSS webservice that is also as FGDC compliant as possible/desirable.
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== Common metadata standards ==
 
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US Federal Geographic Data Committee metadata stipulations are the baseline.
 
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One ideal is that what we should collect, should be at least FGDC compliant.
 
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* [http://www.fgdc.gov/metadata/ FGDC metadata overview].
 
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* [http://dcs.dlese.org/preview/admin/view.do?id=TEST-000-000-000-008 GEON metadata taxonomy]
 
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== Potentially useful toolsets ==
 
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* http://www.dlese.org/libdev/dcs_overview.html
 
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* Any open and free implementations providing a WCS interface?
 
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== Data+metadata transmission standards, formal and informal ==
 
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* OGC Web Catalog Services
 
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* [http://geodiscover.cgdi.ca/gdp/help?request=WebAPIGuideHowtoProgram Web API for geodiscover.cgdi.ca] - metadata search API
 
  
 
== Related efforts ==
 
== Related efforts ==
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* [http://www.geonames.org/ GeoNames] is a gazetteer and naming collection
 
* [http://www.geonames.org/ GeoNames] is a gazetteer and naming collection
 
* http://www.fao.org/geonetwork/srv/en/main.search
 
* http://www.fao.org/geonetwork/srv/en/main.search
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* http://geoportail-geoportal.ainc-inac.gc.ca/metaindex_e.asp  
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* http://geoportail-geoportal.ainc-inac.gc.ca/metaindex_e.asp
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--------
 
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Initiated after the [[Geodata Committee Meeting 20060329|second Public Geodata Committee meeting]].
 

Revision as of 16:40, 26 June 2006

The notes on the [Talk:Geodata_Repository Talk page for this page] describe the background to this project

Data sources

Sources of public geodata for initial setup in a repository.

VMap0

  • PostGIS storage for vector data.
  • Geoserver as a WFS
  • Ongoing generation of per-country and per-region shapefiles; distribution via HTTP and via geotorrents.org

Status

Blue Marble NG

  • Mapserver as WMS

Status

SRTM

Status

Landsat-7

A full list of suggestions for public domain data sets that are nice-to-haves is maintained at Geodata Discovery Working Group

Metadata

  • Geodata Metadata Requirements - a baseline for what would be asked for / expected of data sets in an OSGeo repository
  • A simple metadata-in-GeoRSS webservice that is also as FGDC compliant as possible/desirable.

Related efforts

Retrieved from "http://wiki.osgeo.org/w/index.php?title=Geodata_Repository&oldid=5397"