3-1 Data Standardiza5on
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1 ITS488 Geographic Informa5on System 3-1 Data Standardiza5on Teerayut Horanont, PhD Sirindhorn Interna5onal Ins5tute of Technology (SIIT) Thammasat University E: Part of this teaching materials is from Open Geospa5al Consor5um (OGC) 8/25/14 ITS488 1
2 Updates Class homepage at: htp://www2.siit.tu.ac.th/teerayut/ 8/25/14 ITS488 2
3 Last Lecture Map Projec+on: you learned about different type of map projec5ons, map scale, coordinate system What kind of distor5on occur a[er different projec5on process. Datum and Coordinate Reference Systems Basic program of projec5on transform.. 8/25/14 ITS488 3
4 Today s Outline Exchange of informa5on has become a crucial factor thus interoperability of GIS technology with other technologies is very important. We will learn what is Geospa5al data standardiza5on, development process, and how to implement it. We will see some good examples in this session. 8/25/14 ITS488 4
5 What is Data Standardiza5on? Data standardiza5on is the process of achieving agreement on common data defini5ons, representa5on, and structures to which all data layers must conform. 8/25/14 ITS488 5
6 Data Standardiza5on 8/25/14 ITS488 6
7 What do we mean by Open Standard? Freely and publicly available Non discriminatory No license fees Vendor neutral Data neutral Agreed to by a formal consensus process
8 Common impression about standards work
9 The reality... the annual cost of waste due to inadequate interoperability among computer-aided design, engineering, and software systems in the construction industry to be $15.8 billion <in the US alone> NIST report titled "Cost Analysis of Inadequate Interoperability in the U.S. Capital Facilities Industry," Copyright (c) 2011 Open Geospa5al Consor5um Image from OGC Web Services 4 Test Bed
10 Need standard? Photo courtesy Athina Trakas) Copyright (c) 2011 Open Geospa5al Consor5um
11 So again, what is an open standard? A document, established by consensus and approved by an official organization, that provides rules and guidelines, aimed at the achievement of the optimum degree of order (interoperability) in a given context. EuroControl Aeronautical SkyView2 application Copyright 2011 Open Geospatial Consortium
12 One other key aspect! Balance of interest All Members have an equal voice! Accepts by antitrust laws Copyright 2011, Open Geospatial Consortium 12
13 Standards Development is not easy! Requires collaboration on a global basis Requires consensus by many organizations Requires give and take Requires certified, repeatable process Copyright (c) 2011 Open Geospa5al Consor5um
14 World need standard ISO Interna5onal Organiza5on for Standardiza5on OGC Open GIS Consor5um W3C World Wide Web Consor5um ANSI American Na5onal Standards Ins5tute WS- I Web Services Interoperability Organiza5on OMA Open Mobile Alliance (formerly LIF) WLIA Wireless Loca5on Industry Associa5on FGDC Federal Geographic Data CommiTee GSDI Global Spa5al Data Infrastructure DGIWG Digital Geographic Informa5on Working Group ASPRS American Society of Photogrammetry and Remote Sensing STIA Spa5al Technologies Industry Associa5on Etc. 8/25/14 ITS488 14
15 And does not exist in isolation A Critical Resource for Advancing Standards and others Making Location Count...
16 What is OGC Open Geospa5al Consor5um OGC htp:// yo8#t=68 8/26/14 ITS488 16
17 OGC Standards The OGC develops geospa5al standards that tackle interoperability: We can't share maps on the Web. We can't deliver data to different systems. "We don't have a common language to speak about our geospa5al data or our services. "We can't find and pull together data from our automated sensors. We have security issues rela5ng to geospa5al data exchange. 8/25/14 ITS488 17
18 Some resolutions based on OGC input Any OGC Domain Working Group can be made public ( , twiki, etc). Requires approval All Change Requests are public All standards go through public review Minutes of OGC meetings are public Any organization can respond to an OGC call for participation Increased collaboration Copyright 2011, Open Geospatial Consortium 18
19 - Encodings - GML - SLD - SensorML - CityGML - WMC - O&M - Filter Encoding - KML - Symbology Encoding - GML in JPEG Open Geospatial Consortium OGC Standards (30+) - Data Services - Sensor Observation Service Coverage Service - Web Feature Service - Web Map Service.. - Catalogue Services - Catalogue Service - Processing Services - Coordinate Transformation Service - Web Processing Service - Portrayal Services...
20 OGC and Alliance Partners De Facto De Jure ISO Domains: object/ abstract models, content, vocabulary Domain OGC So[ware Interfaces: instan5ate domain and de jure standards into Infrastructure OASIS/IETF/ W3C Infrastructure: WSDL, UDDI, SOAP, XML, REST Infrastructure 2011 Open Geospatial Consortium
21 Market Availability see Free availability of standards stimulates market Hundreds of Products Implementing OGC Standards Compliance Test & Certification Program 8/25/14 ITS488 21
22 OGC s Approach for Advancing Interoperability Interoperability Program (IP) - a global, innovative, hands-on prototyping and testing program designed to accelerate interface development and validation, and bring interoperability to the market Rapid Interface Development Standards Setting Specification Development Program Consensus processes similar to other Industry consortia (World Wide Web Consortium, OMA, OMG, etc.). Outreach and Community Adoption Program education and training, encourage take up of OGC specifications, business development, communications programs Market Adoption Copyright 2009, Open Geospatial Consortium, Inc.,
23 Interoperability Program Major Benefits To Sponsors Ability to Determine Market Interest -- OGC s RFQ / RFT process validates the willingness of industry to address specific interoperability issues requiring new standards Rapid prototype development yields workable interface specifications in 4-6 months vice years for traditional standards processes Vendors test, validate and demonstrate interface integrity by implementing candidate specifications in their products (reduces the risk that a proposed standard will not perform as intended) Accelerated process encourages rapid time to market for Standardsbased solutions OGC member vendors are typically early adopters of new specifications Copyright 2009, Open Geospatial Consortium, Inc. 23
24 Sample Web Map Service (WMS) 8/26/14 ITS488 24
25 OGC WMS HTTP based (GET or POST) Opera5ons GetCapabili5es GetMap GetFeatureInfo Opera5on keywords are CaSe- InSeNsItIvE Opeara5on values are case- sensi5ve
26 Web Map Service (WMS) Parameters version (version of specifica5on) service (mul5ple services may exists from this service, e.g. WMS, WFS, WCS) request (GetMap) format (image format to be returned) Get this from GetCapabili5es info
27 Web Map Service (WMS) Parameters bbox (spa5al area of interest, i.e. minx,miny,maxx,maxy) srs (reference system / projec5on of bounding box coordinates EPSG (htp:// Get supported SRSs from GetCapabili5es Most widely used SRS is EPSG:4326 Lat/long geographic (WGS84)
28 Web Map Service (WMS) Parameters width (output image width) height (output image height) layers (data desired to be visualized) Get this from GetCapabili5es info Comma- separated list Eg. Layers=eleva5on,roads,railways, First list item is botom most output layer
29 OGC WMS GetCapabili5es Provides XML of service func5onality metadata, and layer metadata Parameters Version (version of specifica5on) Service (mul5ple services may exist from this service, e.g. WMS, WFS, WCS) Request (GetCapabili5es) e.g. htp:// /cgi- bin/mapserv.exe?map=/ms4w/apps/mum2_ogc_workshop/ service/config.map&version=1.1.1&service=wms&request=getcapabili5es
30 8/26/14 ITS488 30
31 Sample URL request WMS GetMap, using MapServer CLASSes for styling, PNG as output: htp://geoserver.itc.nl/cgi- bin/mapserv.exe?map=d:/inetpub/mapserver/ config.map&service=wms&version=1.1.1&request=getmap&layers=forest,railroad,airports&s RS=EPSG:4326&BBOX=97.35,5.61,105.64,20.47&WIDTH=400&HEIGHT=600&FORMAT=image/png WMS GetMap using SLD (see SLD file) for styling htp://geoserver.itc.nl/cgi- bin/mapserv.exe?map=d:/inetpub/mapserver/ configsld.map&service=wms&version=1.1.1&request=getmap&layers=forest,railroad,airport s&srs=epsg:4326&bbox=97.35,5.61,105.64,20.47&width=400&height=600&format=image/ png&sld=htp://geoserver.itc.nl/mapserver/sld/sld.xml WMS GetMap using a PostgreSQL/PostGIS datastore (Note: retrieves polygons!) htp://geoserver.itc.nl/cgi- bin/mapserv.exe?map=d:/inetpub/mapserver/ pg_config.map&service=wms&version=1.1.1&request=getmap&srs=epsg: 28992&BBOX=248500,464700,263900,478600&FORMAT=image/ png&width=616&height=556&layers=enscadparcels Test page: htp://geoserver.itc.nl/mapserver/ 8/26/14 ITS488 31
32 Use Case 8/26/14 ITS488 32
33 OGC Activities Driven by Community Needs Other Standards Organizations Education & Research Sustainable Development Infrastructure - Transportation Health E -Government Emergency Services, Disaster Management Consumer Services, Real Time Information Energy Geosciences Aviation
34 Collaboration Example: 3D Info Management Facilitating the definition and development of interface and encoding standards that enable development of solutions that allow infrastructure owners, builders, emergency responders, community planners, and the traveling public to better manage and navigate complex built environments. CAD-GIS-BIM Integration Rheinmetall Defence Electronics Copyright 2011, Open Geospatial Consortium 34
35 Just approved 3d Interoperability Experiment Will test and demonstrate different mechanisms for the #5a/b Website portrayal, delivery, and exploitation of 3D geodata based showing 3D on open standards-based formats and services. WFS Initiators: Hasso-Plattner-Institut Database the University Server of Potsdam, GIScience W3DS Client at the Optimizer Many Other Participants: content University of Heidelberg, ConverterFraunhofer Institute for Computer Graphics #2b Research Application CityGML Datasets Datasets #1 3D 3D W3DS WVS Server WVS Client Application Bentley, Bitmanagement Database Software GmbH, #4CACI, Institute for Geodesy and Geoinformation Science at Technical University Berlin (IGG), Institut Geographique National Mobile Apps (IGN), Laboratoire des Sciences de l Information #6a/b et des Systémes (LSIS), Monterey Bay Aquarium Research Institute (MBARI), Naval Postgraduate School (NPS), Virginia Tech (VT), and more #2a #3 Copyright 2011, Open Geospatial Consortium 35
36 Sensor Web Enablement (SWE) Copyright 2009, Open Geospatial Consortium, Inc.,
37 CSRIO Hydrologic Sensor Web South Elk River Catchment NE Tasmania OGC Sensor Observation Service used to republish and expose near real time hydrologic and other sensor data from multiple agencies on a Google pane Sites color coded by responsible agency 2010 Open Geospatial Consortium
38 Sea Traffic Management To facilitate Mul5 Modal Transports Sea Traffic Management (STM) is the concept of sharing and using all data from the mari5me space in real 5me, in order to improve safety, environmental performance and efficiency in the mari5me transport chain. 8/25/14 ITS488 38
39 STM Opera5ons and Tools 8/25/14 ITS488 39
40 Service Providers and Standards 8/25/14 ITS488 40
41 Examples: OGC Services used by the new Swedish SAR htp://inspire.ec.europa.eu/events/conferences/inspire_2014/pdfs/workshops/17_06_11.00/232/experience_on_the_work_with_geospa5al_standardiza5on_in_the_monalisa2_project.pdf 8/25/14 ITS488 41
42 For Details on OGC Standards OGC Standards Freely available OGC Reference Model (ORM) Overview of OGC Standards Baseline Resource for defining architectures for specific applica5ons Copyright 2011, Open Geospatial Consortium
43 Open for ques5ons 8/25/14 ITS488 43
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