Pioneering GML Deployment for the NSDI 2004 NSDI

Pioneering GML Deployment for the NSDI 2004 NSDI Cooperative Agreement Program Grant Project Category 5: Establishing Framework Data Services using the OGC Web Feature Service Specification September 22, 2005 Jeff Harrison, President, The Carbon Project jharrison@thecarbonproject. com Tel: 703 -628 -8655 Barry Cross, geo. Leaders bcross@geoleaders. com Tel: 585 -243 -2418 Nuke Goldstein, Founder & CTO, The Carbon Project ngoldstein@thecarbonproject. com Tel: 617 -584 -5077 Panagiotis A. Vretanos, Senior Developer pvretano@cubewerx. com Tel: 416 -701 -1985 © 2006 - geo. Leaders LLC

Agenda • • • Quick Introduction Demonstration-An Environmental Assessment Project Overview Demonstration-”Interactive NSDI” Next Steps Q&A © 2006 - geo. Leaders LLC

Team Introduction • Barry Cross, Project Manager, geo. Leaders • Peter Vretanos, Senior Developer, Cube. Werx • Nuke Goldstein, Founder & CTO, The Carbon Project • Jeff Harrison, Co-Founder & CEO, The Carbon Project © 2006 - geo. Leaders LLC

Purpose of Today’s Demo • Demonstrate the potential of accessing a new reference implementation of the National Hydrography Dataset (NHD) through a powerful Web Feature Service (WFS) and a new profile of Geography Markup Language (GML). • Highlight multi-vendor interoperability using opengeospatial web services from Cube. Werx, Carbon. Arc (a new extension for ESRI’s Arc. GIS developed with Carbon. Tools) and Gaia, a free Open-Geospatial. NET viewer from The Carbon Project. • Illustrate how this approach can enable the NSDI. © 2006 - geo. Leaders LLC

The “So What” Factor • With this service, users can access up-to-date hydrographic content and download it directly to their application through an open standards-based service. • Significant milestone in realizing a services oriented architecture (SOA) as part of the FEA – This means users can download data from many different sources, freely exchanging maps and content and rapidly integrating information to support business and personal decision-making. – This type of multi-source integration capability is essential to respond to dynamic events like floods, security situations as well as supporting a wide variety of environmental assessment and planning applications. • Authorized users can also update NHD data using WFS-T, ushering in a new age of the “Interactive NSDI” © 2006 - geo. Leaders LLC

Overview of NHD • National Hydrography Dataset (NHD) is one of the Framework Data Themes of the National Map. – Along with Roads is one of the most complex themes • Comprehensive set of digital spatial data that contains information about surface water features such as lakes, ponds, streams, rivers, reservoirs, springs and wells and other features such as dams. NHD accessed from Cube. SERV Web Feature Server (WFS) © 2006 - geo. Leaders LLC

NHD/WFS Demonstration – Environmental Assessment • A user is conducting an environmental site assessment in Washington, DC near the Potomac River • Must pull access NSDI content, including Hydrography Data, to support assessment • Step 1 - NHD Feature Access • Step 2 – Save GML and Share GSF © 2006 - geo. Leaders LLC Photo Courtesy of USNPS

Steps 1 & 2 – NHD Feature Access, Save GML (NHD/WMS/WFS and Gaia) • Access Web Feature Server • User reviews NHD/WFS content • Review GML Feature Attributes • Adds additional NSDI information (metro lines, stations) • Review GML • Save off as GSF © 2006 - geo. Leaders LLC Photo Courtesy of USNPS

Content and Tools • • • NHD in Cube. STOR (Oracle DB) Cube. SERV Web Feature Server GMLSF Web Map Servers Carbon Project’s Gaia Geospatial Web Browser and GMLAnalyzer • Geospatial Session File (GSF) • Jeff’s i. Pod © 2006 - geo. Leaders LLC

Project Overview Objectives – Develop and deploy an online operational WFS capability for the Hydrography Framework Data layer (NHD/WFS). – ‘Lower the bar’ for implementing WFS for Framework Data Theme(s) by employing GML Simple Features Profile (GMLSF). – Coordinate with ongoing efforts to define GML Application Schemas for the Framework Data Themes. – Generate feedback on the proposed OGC GMLSF standard, provide comment and reference on the draft ANSI Framework Standards, and develop input to refine the OGC Web Feature Service (WFS) specification. © 2006 - geo. Leaders LLC

NSDI Content and Tools Defined GMLSF Schemas for Hydro and Transportation (XML for the NSDI) Developed Cube. Werx GMLSF Validator Deployed NHD content using Cube. Werx WFS Tested access via Gaia Geospatial Web Browser Integrated with ESRI Arc. GIS through Carbon. Arc. GIS Desktop Application Carbon. WMS Carbon. WFS Carbon. Geometries Tools Geospatial Web Browser Carbon. GML Carbon. Projection Open-Geospatial Operations (Capabilities, Map, Feature, …) Content Web Service OGC Services (WMS, WFS, GML) XML Descriptions Services Other Resources © 2006 - geo. Leaders LLC Other… NHD Data

Project Architecture • Technologies we used – – Web Feature Service – Geography Markup Language - GMLSF – Web Map Service • Goal – Establish a “NHD/WFS” will serve as an operational reference implementation that can be reused by other organizations at all levels of government. ESRI © 2006 - geo. Leaders LLC Cube. Werx IONIC …

Key Points on GMLSF • GMLSF defines a simplified profile of GML for encoding geographic features – Similar to the way WMS uses JPEG, GIF, PNG to be successful (message format is well-understood) – GMLSF supports simple geometric types (Points, Lines, Polygons) • • • NSDI content providers can now publish using GMLSF Provides a simple, consistent platform for NSDI content GMLSF makes it easy to use GML and WFS in multiple applications © 2006 - geo. Leaders LLC

How it was done – from UML Models to GML Schemas Abstract Model… GMLSF Implementation © 2006 - geo. Leaders LLC

Why GMLSF? • Greatly simplifies development of NSDI applications, simple ‘façade’ in front of multiple data sources. • Since GMLSF is just XML, it can also be integrated into new applications on networkconnected mobile, desktop and multi-media platforms. • Some potential applications for hydrography content in GMLSF include – water quality assessments – natural resource management – environmental site assessments and impact statements – delineating watershed boundaries – many others. © 2006 - geo. Leaders LLC

NHD/WFS Demonstration – “Interactive Framework” • A government user is interactively updating NSDI content for Washington, DC near the Potomac River • Another user is searching for NSDI content • Step 3 – NHD/WFS Access (Carbon. Arc) • Step 4 – NHD/WFS Bulk Transactions (Carbon. Arc) • Step 5 – User Access (Gaia) • Step 6 - Discovery (Cube. Werx Registry Client) © 2006 - geo. Leaders LLC

Step 3, 4 & 5 – NHD/WFS Access (NHD/WFS, Carbon. Arc) • Picks up where we left off • Quick look at Carbon. Arc tools • Add “Hydro” Elements • Delete and add data to NHD/WFS • Commit transactions • Quick look at Transaction XML • Review updates in Gaia © 2006 - geo. Leaders LLC

Next Steps • Near-Term Project Activities – Finalize schemas on NHD/WFS – Deploy NHD/WFS to Denver – Register NHD/WFS with Geospatial One-Stop at www. geodata. gov – Initial Test • Potential Future Work – – – – NHD/WFS Arc. Map Toolkit Binary XML Support Transaction “Agreement” for NHD (in XML) NHD Line and Polygon Transactions NHD Event Modeling w/WFS GMLSF Profiling for other datasets Others © 2006 - geo. Leaders LLC

NHD/WFS Arc. Map Toolkit • Potential to handle hydrographic functions in Arc. Map, using GMLSF and Carbon. Arc • Tools for easy navigation, access and use • Integrated with Arc. Map Platform, using content from many sources © 2006 - geo. Leaders LLC Tools and Functions

Binary XML Support • Provides greatly increased performance, much more compact • Reduces ‘conversion’ overhead (from binary to text) • Integrate available Open Source Library • Java and. NET Libraries that do Binary XML encoding • Can be integrated into NHD/WFS Arc. Map Toolkit and handle the binary XML stream Content OGC Services (WFS, GML) XML Descriptions Services Other Resources © 2006 - geo. Leaders LLC NHD Data

NHD Line and Polygon Transactions • Add capability to update more complex geometries via GMLSF and NHD/WFS (lines and polygons) in “Interactive” NSDI © 2006 - geo. Leaders LLC

Transaction “Agreement” for NHD (in XML) • Provides schema for transactions • Based on WFS • Examples available in Carbon. Arc © 2006 - geo. Leaders LLC </Transaction>

Event Modeling w/WFS • Let’s say something happens on River • Enhanced WFS for Notifications – Database updates – Changes can trigger WFS transactions that can be automatically distributed across the “Interactive” NSDI – Usher in – Like a Levee break… © 2006 - geo. Leaders LLC

GMLSF Profiling for other Datasets • • • Geodetic Control Cadastral (Parcels) Roads and Rails Governmental Units Boundary and Annex Survey Data • … • Provides well-known packaging against which application can be developed – Smart Clients, mobile applications, etc. © 2006 - geo. Leaders LLC

2004 NSDI Cooperative Agreement Program Grant Project Category 5: Establishing Framework Data Services using the OGC Web Feature Service Specification September 22, 2005 Jeff Harrison, President, The Carbon Project jharrison@thecarbonproject. com Tel: 703 -628 -8655 Barry Cross, geo. Leaders bcross@geoleaders. com Tel: 585 -243 -2418 Nuke Goldstein, Founder & CTO, The Carbon Project ngoldstein@thecarbonproject. com Tel: 781 -229 -6619 Panagiotis A. Vretanos pvretano@cubewerx. com (416) 701 -1985 © 2006 - geo. Leaders LLC