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Web Mapping Services Standards for Framework Datasets November 2010 Panel Members: Erik Endrulat Tanya Haddad Framework Coordinator: Eli Adam Milton Hill Rob Mc. Dougald Moderator: Dorothy Mortenson
Question for the day l l Is there a role for web mapping services standards? If so, now should we develop them?
Visualization Authoritative web map services that are cartographically representative, optimized for performance, interoperable, documented, and discoverable
Considerations thru Examples l l Example 1: 2005 Orthophotos Example 2: Cartographic Sensitive Data Example 3: Hydrography Example 4: Dams
2005 Orthophotos – Role Model l l Authoritative web mapping services Interoperable Easy to use Inclusive, established and robust Discoverable through Oregon Spatial Data Library and Arc. GIS Online
Considerations… Cartographic Sensitive Data l l l Some data, like geology, wetlands, land ownership, coastal hazards and transportation, may require specifications for cartographic representation. There may be some required queries in order to generalize or may be some symbology required behind the representation of a dataset Minimize the need for a legend
Hydrography l l Data design is complex and uses events and routes. To improve performance for WMS, these data need to be “flattened”. Only publish a couple of attributes How should this simplification procedure be integrated into the Framework Standard?
Dams l l l A “best available” dams dataset and posted on the GEO alpha list. The data does not meet any specific data standards. Source agency intends to create a WMS after some internal work GEO created a WMS for dams How and when do we decide a dataset is ready for web publishing and who holds the authoritative dataset?
The Panel l Erik Endrulat, Geospatial Enterprise Office Web Services available through Oregon GEO l Tanya Haddad, Oregon Coastal Atlas Metadata , Catalogs, and Services l Eli Adam, Lincoln County Interoperability; web feasibility/optimization l Rob Mc. Dougald, Geo. Meridian Government Web Service Switchboard
Erik Endrulat Web Services available through Oregon GEO
Web Services @ Oregon GEO Framework Themes & Data Clearinghouses: http: //gis. oregon. gov | http: //arcgis. com (search for Group=Oregon)
Web Services @ Oregon GEO Web Service Example Stream imagery as WMS or ECWP to desktop or web client Saves $$$ by avoiding data duplication http: //imagery. oregonexplorer. info/
Web Services @ Oregon GEO Current Process 1. Existing data from OR Spatial Data Library l l l Identify datasets Document metadata Create cartography Publish (Arc. GIS REST, WMS, SOAP) Register on Catalog 2. Web Service for desktop or Web app.
Web Services @ Oregon GEO Add services directly into desktop client (Arc. Map 10) Include (and reuse) services in web applications OR Stimulus App. SOS Drop Box App. OWEB Investment Tracker ODF Locat. OR
Tanya Haddad Metadata , Catalogs, and Services
Interoperability I l l The world (wide web) is a diverse place To Harmonize or Mediate? – that is the question Mediation Harmonization Discoveryschool. com
Interoperability II l l l Standards give us just enough harmonization across applications to make life easier Standards for different things can link together to allow chains of interactions Metadata (FGDC, ISO) Data Catalogs (CSW) Data Services (WMS, WFS, WCS) Analysis (WPS)
Interoperability III l l l Lots of data is already available via OGC standards Many clients to choose from – Arc. Map is a very powerful option If we do our metadata correctly and serve it via catalogs, we can point our users to many types of data services
Eli Adam Interoperability; web feasibility/optimization
Interoperability (server and client) l l l You can view the Oregon Imagery Explorer WMS in 100 s of clients Web Map Service v. 1. 1. 1 You can server WMS v. 1. 1. 1 with hundreds of servers as well Both clients and servers include numerous vendors (Autodesk, Bentley, ERDAS, ESRI, Intergraph, Oracle, PCI Geomatics) and open source projects (The Carbon Project, Geo. Server, Mapserver, Universities, others)
Interoperability (server and client)
Interoperability (server and client)
Interoperability l l l WMS is an established standard first released in 2000 and updated more recently Many existing WMS servers (USGS, other federal agencies, INSPIRE, etc) There are even more projects that implement WMS client support but haven’t certified for compliance (Open. Layers, Google Earth/maps, VE, NASA World Wind, GDAL, udig, qgis, gv. SIG, GRASS, many others)
Web optimization l Send the smallest sized data needed l l l Consider single band pseudo-color rather than 3 band rgb or even 4 band rgba Send only most useful non-derivable fields You can have subsequent additional specific requests for more data
Rob Mc. Dougald Government Web Service Switchboard
Gov. Web Service Switchboard Coming to you live from the dark recesses of Rob’s mind. Rob Mc. Dougald, Geo. Meridian Rob. Mc. [email protected] Meridian. com 503. 206. 7202
Today Everyone Is Issuing Phone Numbers l “Everyone” is standing up web services, web-based data services, web map services, and public APIs l We need middleware infrastructure to share web services. We need a web service switchboard so we don’t end up with this. l Do the math. n(n-1)/2. 10 web services = 45 point to point integrations. How many WS will you integrate with? 36 counties, 250 cities, 20 to 60 state agencies, X random APIs. l Risk. Ask your lawyer. “Sorry your Electitude. Someone changed “taxno”” l We need “Authoritative Process” to get authoritative data.
Why Don’t We AUTHORIZE Our Own Phone Numbers? The Solution: Build a governmental “informational infrastructure” to REUSE, integrate, MAINTAIN, and share data across ALL levels of government. Build a middleware WS Switchboard. ESB, SOA, EAI, EA, XYZ PDQ Build an “Authoritative Process” to manage the Switchboard. Governance. “Another flaw in the human character is that everybody wants to build and nobody wants to do maintenance. " Kurt Vonnegut
Gov. Web Service Switchboard (ESB/SOA Middleware) • Leverage EAI/ESB/SOA best practices. • Authoritative Process = standards, sustainability, confidence, credibility, and funding. • SOA contract. SLA, data standards, WS standards, API WSDL, metadata, maintenance strategy … • Committee structure • Extend existing FIT, GIG, RLIS, EISPD governance models. • Adopt big boy IT practices
Why Gov. Web Service Switchboard Parce l WS Road WS Route API • Automate and improve business processes. • Re-use versus re-create services. • Eliminate point-to-point integration challenges. • Easily design, deploy and re-use Web services. • Efficiently govern SOA-based initiatives. • Launch robust enterprise class solutions without coding. Publi • Leverage existing legacy applications investments. c • Gain real-time visibility into operational and business User activity. MAKE YOUR BUSINESSES FASTER, CHEAPER, BETTER, AND MORE TRANSPARENT. Or … n(n-1)/2 GIS User Business Applicatio n Integratio n
Questions for the Panel
Question for the day l l l Is there a role for Web Mapping Services Standards? If so, now should we develop them? – any additions to what was discussed? What to do in the next 6 months?
Contacts l l l Erik Endrulat, Geospatial Enterprise Office (GEO) erik. [email protected] or. us (503)378 -2781 Tanya Haddad, Oregon Coastal Atlas tanya. [email protected] or. us (971) 673 -0962 Eli Adam, Lincoln County [email protected] lincoln. or. us (541)574 -1289 Rob Mc. Dougald, Geo. Meridian Rob. Mc. [email protected] Meridian. com (503)206 -7202 Dorothy Mortenson, OR Water Resources [email protected] state. or. us (503)986 -0857 Milton Hill, GEO - Framework Coordinator milton. e. [email protected] or. us (503)378 -3157