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Clearinghouse and OGC Web Services Overview

Clearinghouse and OGC Web Services Overview. Doug Nebert FGDC Secretariat December 4, 2001. Presentation Overview. Web Map CAP Activities Project Members Workshop Architecture Status Clearinghouse Status Current Environment FY 2002 Planned Activities. Web Map CAP Objectives.

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Clearinghouse and OGC Web Services Overview

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  1. Clearinghouse and OGC Web Services Overview Doug Nebert FGDC Secretariat December 4, 2001

  2. Presentation Overview • Web Map CAP Activities • Project Members • Workshop • Architecture • Status • Clearinghouse Status • Current Environment • FY 2002 Planned Activities

  3. Web Map CAP Objectives • To demonstrate the integration of information discovery (Clearinghouse) with OpenGIS Web Map Services for the display of found data • To visualize data from multiple map services at different organizations through an OGC spec-based portal • To establish 24x7 reliable web map services described in metadata for others to use

  4. Approach • Awarded to multi-organization projects interested in hosting web map services and map viewing software as part of their Clearinghouse • Held a week-long workshop at SAIC in September to introduce free and commercial solutions to projects • Deploy modified FGDC data and services metadata in Clearinghouses • Use and deploy web map services and viewer software across projects

  5. Workshop Participants • Projects: • NOAA NGDC • North Carolina • New Mexico • Cornell U., NY • Mifflin Co, PA • MetroGIS, MN • Oregon • Nevada • Idaho • MIT • Arkansas • Alaska GDC • Vermont • CIA

  6. Objectives of the Workshop • to educate operators of Clearinghouse and map services on relevant OpenGIS specifications and experimental interfaces to view distributed data • to assist CAP recipients in the extension of their map services to support OGC interfaces • to introduce linkages between metadata, clearinghouse, and map data display • to establish communication between CAP recipients and support individuals

  7. Request Response Z39.50 Z39.50 OGC getMap Z39.50 Z39.50 Web Browser Search Gateway WMS Interface WMS Interface ArcIMS MS Metadata Metadata Data s2 s1 Data Data Data Data Data Data Data Data Data Organization 1 Organization 2

  8. FGDC Federal Geographic Data Committee Architecture “Roadmap” User Client Application Server Interfaces Web Map Server Catalog . . . Services Data

  9. Plans for WebMapCAP In the life of these CAP projects we intend to: • Clarify the relationship between data and services metadata management at the service node (your mapserver/metadata server) • Establish a registry of eligible WMS capabilities among the CAP and other projects for use in the OGC.net • Experiment with a broker gateway that will match data content and service requests for the client • Stand up OGC WMS services at all CAP projects • Establish WMS viewer portals at all CAP project community portals that include search and display of local and national data sources

  10. Clearinghouse Status Clearinghouse Statistical Summary 12/01: • US Gateways: 6 • Total Servers: 281 • Active Servers: 248 (Inactive: 33) Activities: • Refining search gateways • Hosting/coordinating global (GSDI) search • Improving server registration/management • Participating in OGC to discuss futures

  11. Search Wizard • Newer user interface to assist in data discovery • Includes ISO 19115 topical pick-list • Selects servers based on footprint and topics of interest • Suggests search words to pass-through • Presents some results as Summary (with inset map)

  12. Clearinghouse Concepts for 2002 • Mine Clearinghouse Gateway connection logs for user numbers and types, success of queries, popularity of services • Deploy FGDC-hosted harvester/index/Z39.50 server for metadata from small sites not able to operate their own Node server software • Continue prototyping integrated search portals linking mapping services with data discovery • Work with vendors to incorporate Clearinghouse (Catalog) search and service in GIS products • Participate in OGC standardization activities

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