Wiki-JoWalsh: I copied everything from the current page to the talk page, because the notes need completely overhauling and turned into a spec

2006-06-22T19:58:00Z

I copied everything from the current page to the talk page, because the notes need completely overhauling and turned into a spec

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''I copied everything from the current page to the talk page, because the notes need completely overhauling and turned into a spec - [[User:JoWalsh|Jo]]''

= Why should OSGeo be running a geodata repository? =

* Without data, Open Source Geospatial Software isn't much use.

* 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

* 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.

* 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.

* This is a service OSGeo can usefully offer to anyone who wants a safe home for their data in the future.

= Data sources =

These are suggestions that have been offered to the group so far.

== Well-known sources of publically collected and maintained geodata ==

See list maintained at [[Geodata Discovery Working Group]]

== Lesser known or less widely distributed sources of publically collected geodata ==

* Local government departments which are putting geodata into the public domain (MassGIS, Manitoba, MetroGIS)

== Privately contributed / collectively constructed geodata ==

* [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.

= No data without metadata! =

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.

* [[Geodata Metadata Requirements]] - a baseline for what would be asked for / expected of data sets in an OSGeo repository

== Common metadata standards ==

US Federal Geographic Data Committee metadata stipulations are the baseline.
One ideal is that what we should collect, should be at least FGDC compliant.

* [http://www.fgdc.gov/metadata/ FGDC metadata overview].
* [http://dcs.dlese.org/preview/admin/view.do?id=TEST-000-000-000-008 GEON metadata taxonomy]

== Potentially useful toolsets ==

* http://www.dlese.org/libdev/dcs_overview.html
* Any open and free implementations providing a WCS interface?

== Data+metadata transmission standards, formal and informal ==

* OGC Web Catalog Services
* [http://geodiscover.cgdi.ca/gdp/help?request=WebAPIGuideHowtoProgram Web API for geodiscover.cgdi.ca] - metadata search API

== Related efforts ==

* [http://www.mapdex.org/search/ MapDex] offers a metadata search facility
* [http://www.geonames.org/ GeoNames] is a gazetteer and naming collection
* http://www.fao.org/geonetwork/srv/en/main.search
* http://geoportail-geoportal.ainc-inac.gc.ca/metaindex_e.asp

--------

Initiated after the [[Geodata Committee Meeting 20060329|second Public Geodata Committee meeting]].

Talk:Geodata Repository - Revision history

Wiki-JoWalsh: I copied everything from the current page to the talk page, because the notes need completely overhauling and turned into a spec