Geography Network David Danko ESRI Building a Community…

GeographyNetwork.com is a Portal Gateway for Spatial Catalog SearchingGateway for Spatial Catalog Searching Metadata Server Technology Maintains Registry of Data and ServicesMetadata Server Technology Maintains Registry of Data and Services Connects Users with Data and GeoServicesConnects Users with Data and GeoServices Provides Organization and StructureProvides Organization and Structure

A portal for… Registering,Registering, Discovering,Discovering, Sharing,Sharing, Using geographic informationUsing geographic information … A Clearinghouse for Geospatial Information

FeaturesFeatures “One stop shop” for GIS-related information“One stop shop” for GIS-related information – data, services, solutions, clearinghouses View, query and download dataView, query and download data – publishers provide links via metadata Enables direct useEnables direct use – browsers – GIS applications GN button built into ArcGISGN button built into ArcGIS – direct link to GN repository of providers

GN Community UsersUsers –GIS community –Application developers –General Public PublishersPublishers –Data, Services, Solutions, Clearinghouses –Free services –Commercial services –Content Providers –URL Links –Down load data

Free Services Public domain servicesPublic domain services Private contributed servicesPrivate contributed services Metadata describes any access or use restrictionsMetadata describes any access or use restrictions – copyright or license issues

Commercial Services GN Participant AgreementGN Participant Agreement –Reservation of ownership –Web Linking License –Restriction Reservation –End User License –Trademark License –Web Site Maintenance –Limited Warranties and Disclaimers –Hold Harmless –General Provisions –Governing Law

Current Statistics ~ 2000 Publishers/contributors~ 2000 Publishers/contributors 260 map services – viewing services 445 data services - downloading 217 clearinghouses - repositories Custom GatewaysCustom Gateways –DE,TNRIS, UNEP, NJ, NIMA, BLM

PublishersPublishers Government/NGOs BLM TNRIS CAGIS USGS BLM TNRIS CAGIS USGS Census Bureau EPA World Bank EPA World Bank FEMA WRI GeoMAC WWF HUD National Atlas National Health Foundation NASA Nature Conservancy NJOIT PADEP PADEP Commercial Chalk Butte Systems DMTI Spatial EarthSat Eastman Kodak ESRI BIS GDT National Geographic PennWell Pixxures Space Imaging Syncline TeleAtlas WorldSat

Benefits of Map Services Access to potentially large datasets (national DEM) w/o downloading and storing locallyAccess to potentially large datasets (national DEM) w/o downloading and storing locally Each access is up to date dataEach access is up to date data –Weather, flood, earthquake data – do you want dynamic data on a CD? User views data one screen-full at a timeUser views data one screen-full at a time –Helps performance on server side Maps are easier to view than content in tabular formMaps are easier to view than content in tabular form

Maps vs. Tables USDA NASS (Ag. Census data generally distributed in tables.) Example: render of average farm-size statistics.

Organizational Benefits GN contributes content for ~ 1 million map requests per dayGN contributes content for ~ 1 million map requests per day –Potential for an Organization’s content to be seen by new audiences Register most popular static data setsRegister most popular static data sets –Publicize offerings Publish mapping solutions – stand alone applications on your web sitePublish mapping solutions – stand alone applications on your web site –Drive new traffic to your site Publish base map servicesPublish base map services –Provide sample offering

DiscoveryDiscovery Data & ServicesData & Services –Metadata Repositories –Catalog Services Search, View, And Use on the Internet Metadata Catalog ISO19115 XML Standards About Information and Applications. Not solely GIS Data Metadata drives discovery/use of data and services

MetadataMetadata Locate, Evaluate, Extract, EmployLocate, Evaluate, Extract, Employ Standardized metadataStandardized metadata –Provides an understanding of data – around the Globe and across communities

ISO Metadata Designed:Designed: – to support geographic information; – to work with wider information technology standards and practices; – to serve the global community, in a multi- national, multi-language environment; – based on a foundation of national, regional, and special information community standards and experiences

ISO Metadata Editor

ISO Synchronizer Automates much of the work for metadata collection and maintenanceAutomates much of the work for metadata collection and maintenance Vector and raster information, spatial reference, etc.Vector and raster information, spatial reference, etc. ArcIMS Services Files Automatically senses and records properties

Build Your Own GN ArcIMS 4 is “Out-of-the-Box” GN ToolkitArcIMS 4 is “Out-of-the-Box” GN Toolkit –Metadata Server –Publish Metadata –Search Metadata –Publish Maps –Distribute Data Several Organizations InterestedSeveral Organizations Interested –UN, NIMA, BLM, EPA, Texas, Delaware, New Jersey

ArcCatalog Internet ArcIMS Metadata Server ArcSDE Author Publish Discover ArcIMS 4.0 allows easier metadata publishing Metadata Server

Metadata Server Goals DATA SHARING!!!DATA SHARING!!! –Provide a central repository of metadata that can be accessed by everyone over the internet. –A place for data producers to publish their data and data consumers to find the data. –Using ArcCatalog publishers can publish to multiple metadata servers

Publishing Metadata Publish metadata by copy/paste or drag/dropPublish metadata by copy/paste or drag/drop –Copy/drag the metadata onto the Metadata Server folder to publish Metadata is “copied” to the ServerMetadata is “copied” to the Server –a new record is created in the database for this metadata dataset. –Contents are indexed to optimize search and retrieval. Must have publishing privileges.Must have publishing privileges.

Searching for Geospatial Data Metadata Catalog Geography Network ArcCatalog HTML or Java Clearinghouse Z39.50 Metadata Explorer

Searching Metadata Use ArcCatalog or the web-based Metadata Explorer as the search client.Use ArcCatalog or the web-based Metadata Explorer as the search client. Searching a metadata repository is possible in 2 ways:Searching a metadata repository is possible in 2 ways: 1.Via selected search criteria (keyword, extent, content type, data theme). 2.By browsing through the hierarchy of documents.

CustomizingCustomizing Metadata ExplorerMetadata Explorer -Graphics -Title -Search criteria -Help instructions -Display of results, details, map views -Metadata Server -Custom content –Based on XML –ISO –FGDC –National profile

Building A GN

Distributed Networks of Metadata Services Strategy: provide for harvesting data to a central serverStrategy: provide for harvesting data to a central server Sample scripts to achieve the harvesting process are available with a custom installation of ArcIMSSample scripts to achieve the harvesting process are available with a custom installation of ArcIMS

Geography Network Embraces, Embodies And Builds Upon All The Good Work Done by SDI Developers Around the GlobeEmbraces, Embodies And Builds Upon All The Good Work Done by SDI Developers Around the Globe Supports Open Standards – FGDC Metadata/Clearinghouse – ISO Metadata, OGC WMS and Catalog ServicesSupports Open Standards – FGDC Metadata/Clearinghouse – ISO Metadata, OGC WMS and Catalog Services – Internet Protocol (XML, HTTP…) …Helping Implement GSDI