Harvesting Metadata for Use by the geodata.gov

Portal

Doug NebertFGDC Secretariat

Geospatial One-Stop Team

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NSDI: a Foundation for GOSGeospatial One-Stop (GOS) implements the principles of the NSDI spelled out in Executive Order 12906 (recently revised)GOS builds on the resources already available in the NSDI – FGDC and endorsed external Framework Standards, NSDI Clearinghouse NetworkOperated as project coordinated through FGDC Secretariat with many agency partners

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Geodata.gov and the NSDI Clearinghouse

Over 150 collections of metadata exist within searchable NSDI Clearinghouse Nodes in the US All FGDC metadata records are searchable by fields and full-text through six replicated search gateways geodata.gov will speed and simplify search and browse of these and other metadata through its portal interface

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GOS Expectations of PortalSearch for geospatial data is 'easy-to-use‘ and would replace the primary search facilities of the NSDI Clearinghouse GatewaysMetadata are harvested from remote collections into a single metadatabaseBrowsing for geospatial data is made possible through common ISO Categories and resource type assignmentsDescriptions of map and data services are also indexed from FGDC metadata entriesData descriptions are linked to an online map viewer where map services exist

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Portal at geodata.govInitial release of the GOS portal is online with startup content selectively gathered from key providers and entered ‘by hand’New content will be harvested from the Web or individual metadata files may be uploaded as XML or via form inputOGC Web Map Services (WMS) and ArcIMS ‘image’ services supported in viewerData, map services, static maps, and applications are among the resource types indexed

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Current Publication Options Users may contribute metadata one of three ways: Enter FGDC metadata into a form at

geodata.gov and they are stored and indexed there

Upload metadata as FGDC XML to the geodata.gov site

Register their existing metadata collection to be harvested into the GOS metadata repository

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metadatacache

geodata.gov

map viewer

metadata

metadata

metadatametadatadata

data

data

data

formentry

XMLupload

search

map services

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How do I publish?• Before you can publish metadata in

geodata.gov, you need to register as a publisher

• After your registration is completed, you will have username and password to access the portal as a publisher

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Data Entry Form

If you do not have any FGDC metadata and anticipate only a few records to be published to geodata.gov you can use an online entry form to collect abbreviated FGDC metadata that will be hosted at geodata.gov

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Upload XML Metadata If you have access to a metadata editor such as ArcCatalog but do not have a Z39.50 server or ArcIMS Metadata Server you can upload a small set of FGDC metadata to geodata.gov

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Harvesting Option If you have or would like to maintain a collection of metadata at your site and can let geodata.gov know its location, geodata.gov can ‘harvest’ or fetch new and updated metadata to make it searchable You can describe any type of resource (planned data activity, existing data, a map service, an application, etc.) using your published set of metadata

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Harvesting options A provider wanting to have content harvested into in geodata.gov can register: Z39.50 “GEO” Metadata server (NSDI

Clearinghouse Node) ArcIMS Metadata Server OAI-PMH (Open Archives Initiative,

Protocol for Metadata Harvest) Web Accessible Folder

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Harvesting capabilities Harvesting is a scheduled retrieval of metadata from a remote collection, such as an existing Clearinghouse Node The harvester detects new content and brings it into a metadata ‘cache’ at geodata.gov for inclusion in search Scheduling can be established in the registration profile of each provider

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If you have a Z39.50 Clearinghouse Node

If your metadata collection is served on Z39.50 (such as Isite), you need to implement the new version of Isite Update version for Isite is available at: ftp://ftp.awcubed.com/pub/Software/Isite2

/

Other brands of Z39.50 software (Compusult, Intergraph, ESRI, Blue Angel) will be implementing the new features for harvest in coming months

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Inclusion Strategy FGDC Staff will be working on an outreach and ‘inclusion’ schedule to get all domestic Clearinghouses (Z39.50 and otherwise) from State/Local, Federal, and Commercial sources Encourage partnerships and community networking to include as many resources as possible