ESIP & Geospatial One-Stop (GOS) Registering ESIP Products and Services with Geospatial One-Stop

Objective – Answer Questions?  Why should ESIP members publish their metadata holdings to the GOS?  How do ESIP members publish their metadata holdings to GOS?

What is GOS?  Geodata.gov is a portal to our Nation’s digital geographic data.  Managed by the Department of the Interior and sponsored by the President’s Initiative for E- Government.  The portal is a catalog of geospatial information containing metadata records (information about the data) and corresponding links to live map, feature, and catalog services, downloadable data sets, images, clearinghouses, map files, and more.

What is GOS (cont)?  Metadata Repository  Tools for uploading and harvesting metadata.  Tools for metadata management and administration.  Search Interface  Map Viewer  Communities  Marketplace

GOS and Standards  Metadata  FGDC & ISO (NA Profile in future)  OGC  WMS, WFS, WCS  Harvesting Protocols  CS-W, Z39.50, OAI, WAF, ArcIMS  Catolog Search  CS-W, Z39.50, OAI, GOOGLE HTP  Portlet  JSR-168

ESIP Community

How do ESIP members publish their metadata holdings to GOS?  Step 1: Prepare metadata for GOS ingest.  Step 2: Register as a publisher.  Step 3: Select a publishing method.  GOS metadata creation tool  Upload Metadata - Manual  Harvest Metadata – Automated  Step 4: Configure harvesting.  Step 5: Review harvesting results.

Step 1: Prepare metadata for GOS Ingest?  Ensure Validation  Include required elements  Optimize search with conditional elements  Free Text  Spatial  Temporal  Data Type  Data Theme  Publisher  Optimize references to external resources with online links  Map Services  Map File  Data  Documentation

Required Validation Elements  Identify Info

Required Validation Elements (cont)  Contact Info

Required Validation Elements (cont)  Dates

Required Validation Elements (cont)  Spatial Domain

Sample XML Metadata Record with FGDC Essential Elements

Sample XML Metadata Record with FGDC Essential Elements (cont)

Valuable Conditional Elements  Defined in Metadata or  Generated by GOS XSLT  Resource description (content type)

Valuable Conditional Elements (cont)  Theme Keywords (data category)  /metadata/idinfo/keywords/theme/themekey  /metadata/dataIdInfo/tpCat/TopicCatCd

Valuable Conditional Elements (cont)  Online Links – reference external content  Detected in multiple elements  Used by GOS XSLT to define content type

Step 2: Register as a Publisher

Step 3: Select Publishing Method GOS Publishing Methods  Create Metadata Tool  Upload Metadata Tool  Harvest Metadata

Create Metadata Tool  Form based metadata creation  Ensures Validation  One record at a time

Upload Metadata  Form for manual uploading of metadata  One record at a time

Harvesting  Automated, scheduled process for collecting new and updated FGDC metadata from external catalogs for publishing to GOS.  Synchronizes GOS repository with publishers metadata catalog.  Five protocol options available for harvesting.  Preferred publishing method for large metadata catalogs.

Step 4: Configure Harvesting  Protocols  Z39.50  ArcIMS  WAF  OAI-PMH  CS-W

Harvest / Publish Process

Harvesting Protocol Pros-Cons ProtocolProCon Z39.50Open interoperable standard clearinghouse connection supports GSDI and GEOSS. Queries, security and ISite SW support. SW Requires some resources to setup and administer. Must set up on port other than 80. Must use new version of ISite to assign unique ID to records. ArcIMSSimplifies publishing if in an Arc environment - good persistent unique ID supports traceability. SW allows use of other protocols. AXL Code is xml based. Exposes your collection to other ESRI collection. Proprietary interface connects easily with GOS but not natively to other NSDI/GSDI nodes. (GOS make the whole collection available through the other protocols). May need to edit some fields. Code provided by one vendor. WAFEasy to set up with little administration (Note - different access controls – Active Directory based) Unique ID management is tied to the location of the system as opposed to a persistent ID from the metadata. ID changes if folder moves to a different machine.

Harvesting Protocol Pros-Cons ProtocolProCon CS-WInteroperable OGC SpecStill new. Many flavors or profiles (EBRim, FGDC, ISO etc). Currently appears to only support getting a subset of the metadata and not the full record back. OAI-PMHLibrary community supported. Very few users at this time in GOS. Limited experience with it.

Step 5: Review harvest results  Harvest Report

Harvest Report

 Indentify metadata records that fail validation.

How does GOS benefit ESIP?  Provides a repository for ESIP metadata.  Provides a forum for showcasing ESIP products and services to the broader geospatial community.  Provides a gateway for GOS users to access the EIE portal.

Top 10 reasons ESIP members should publish their data holding to GOS? 1. Organizational exposure via the ESIP community. 2. Map Viewer for displaying map services (OGC & ArcIMS). 3. Option to view map services in Google Earth. 4. Robust search tools for finding metadata (spatial, temporal, text based searching). 5. Google search enabled metadata. 6. Marketplace for finding & sharing geospatial resources. 7. Easy to use publishing, harvesting, and metadata management Tools. 8. FGDC & ISO friendly ingest. 9. The GOS repository will eventually be harvested by the EIE. 10. It will make Dick happy!

References  Publishing Metadata to the Geospatial One- Stop Operational Portal- ESRI White Paper  Creating and Publishing Metadata in Support of Geospatial One-Stop and the NSDI