1. Copyright © 2006, Open Geospatial Consortium, Inc., All Rights Reserved. The OGC and Emergency Services: GML for Location Transport & Formats & Mapping Protocols SDO Coordination Meeting Columbia University Raj Singh, PhD and Carl Reed, PhD October 6, 2006

2. Helping the World to Communicate Geographically Copyright © 2006, Open Geospatial Consortium, Inc., All Rights Reserved. Contents What is the OGC? GML and Emergency Services

3. Copyright © 2006, Open Geospatial Consortium, Inc., All Rights Reserved. What is the OGC?

4. Helping the World to Communicate Geographically Copyright © 2006, Open Geospatial Consortium, Inc., All Rights Reserved. What is the OGC? The Open Geospatial Consortium, Inc. (OGC) is a non- profit, international voluntary consensus standards organization that is leading the development of standards for geospatial and location based services. –The OGC facilitates a consensus process in which government, private industry, NGOs, and academia collaborate to create open and extensible software application programming interfaces for geospatial and other mainstream information technologies

5. Copyright © 2006, Open Geospatial Consortium, Inc., All Rights Reserved. OGC Geography Markup Language (GML) for Emergency Services

6. Helping the World to Communicate Geographically Copyright © 2006, Open Geospatial Consortium, Inc., All Rights Reserved. What is GML? The Geography Markup Language (GML) is the XML grammar defined by the Open Geospatial Consortium (OGC) to express geographical features. GML serves as a modeling language for geographic systems as well as an open interchange format for geographic transactions on the Web/InternetXMLOpen Geospatial Consortium Evolved since 1999. Current version is 3.1.1 Version 3.2 will be the approved OGC and ISO release

7. Helping the World to Communicate Geographically Copyright © 2006, Open Geospatial Consortium, Inc., All Rights Reserved. What is supported in GML 3.x? Features –A feature is an application object that represents a physical entity, e.g. a building, a river, or a person. Geometry –GML encodes the GML geometries, or geometric characteristics, of geographic objects as elements within GML documents. The geometries of those objects may describe, for example, roads, rivers, and bridges. Coordinate Reference Systems Topology Observations Time Dynamic feature Coverage (including geographic images) Unit of measure Map presentation style

8. Helping the World to Communicate Geographically Copyright © 2006, Open Geospatial Consortium, Inc., All Rights Reserved. Semantic interoperability is real – XMML - eXploration and Mining Markup Language Semantic interoperability is real – XMML - eXploration and Mining Markup Language Web Feature Services (OGC) GA Web Map Composer PIRSA DOIR XML - GML\XMML An XML based encoding for geoscience and exploration information. It is intended to support exchange of exploration information in a wide variety of contexts.

9. Helping the World to Communicate Geographically Copyright © 2006, Open Geospatial Consortium, Inc., All Rights Reserved. Spatial Data Accessed via OGC’s WFS specification and XMML A user makes a request and gets back GML based data which can be …. Rendered into a map AND queried by a user or…. … formatted into a report or …. … read and used by any enabled application

10. Helping the World to Communicate Geographically Copyright © 2006, Open Geospatial Consortium, Inc., All Rights Reserved. GeoRSS – An example of a light-weight GML payload Add “real” location to RSS feeds (and more) Avoid the fractious nature of previous RSS efforts –RSS 0.9: ad hoc XML encoding –RSS 1.0: RDF model –RSS 2.0: XML non-RDF Can be used for alerts and notification

11. Helping the World to Communicate Geographically Copyright © 2006, Open Geospatial Consortium, Inc., All Rights Reserved. What kind of applications make sense? Publishing emergency response requirements & actions –Road closures –Hospital beds available –Locations of key personnel & other resources Monitoring sensors –Road network cameras –Bus station cameras –Environmental sensors (e.g., river flow & toxicity, rainfall, temp, etc.) –ITS sensors (e.g., traffic flow monitors) Publishing local events, property changes, new rules

12. Helping the World to Communicate Geographically Copyright © 2006, Open Geospatial Consortium, Inc., All Rights Reserved. Example: GeoRSS GMLPolygon 45.256 -110.45 46.46 -109.48 43.84 -109.86 45.256 -110.45 GML

13. Helping the World to Communicate Geographically Copyright © 2006, Open Geospatial Consortium, Inc., All Rights Reserved. GeoRSS in Atom

14. Helping the World to Communicate Geographically Copyright © 2006, Open Geospatial Consortium, Inc., All Rights Reserved. GML Profile for OASIS Work Slightly more advanced profile that in GeoRSS. Intended for use by the OASIS Emergency Management TC for use in: –CAP –EDXL-DE –EDXL-RM –HAVE As well as for use in the OASIS xAL (address) standards Draft has been approved by the GIS SC in EM TC.xsd files formalized this week at the OGC meetings

15. Helping the World to Communicate Geographically Copyright © 2006, Open Geospatial Consortium, Inc., All Rights Reserved. GML for the IETF GeoPriv –PIDF-LO Discussions on use of location in SIP, ECRIT, RADIUS, etc –Excellent work on being consistent in expression of location – whether binary or XML PIDF-LO Shape Application Schema for use by the Internet Engineering Task Force –Based on Martin Thomson’s work –Draft document under consideration by the OGC membership for approval as an OGC Best Practices document –OGC members worked on the application schema this week