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OGC and Its Geospatial Interoperability Standards OGC and its geospatial interoperability standards Prof. Dr. Franz-Josef Behr, SDI Open 2019, 2019-07-15 Co-Chair: ICA Commission on SDI & Standards The content is licensed under a Creative Commons-Lizenz CC BY-NC-SA. Architecture of (Geospatial) Web Applications DNS Server IP address IP address / Server Name / Host name Client "User Agent" HTTP Server Document root Static HTTP-Client HTTP HTTP-Client HTTP resources HTTP-Client 80 Internet 80 Communication Tiert PNG, JPG, … (Web Tier) XML / SVG Presentation Tier CGI protocol Application Server Apps Local System App Tier, (GIS) SQL Business Logic Tier Data collection,, processing, analysis DBMS Server Data Tier 2 Architecture: Acknowldeged IT Standards DNS Server Identification Transfer of IP addressEncoded Information IP address / ServerURI Name / Host name RFC 1630 Client "User Agent" HTTP Content-TypeWebserver RFC 2045 Document root RFC 2616 Static HTTP-Client HTTP HTTP-Client HTTP resources HTTP-Client 80 Internet 80 Communication Tier, PNG, JPG, … Web Tier XML / SVG XML CGI protocolCGI w3.org/XML/ RFC 3875 Presentation Tier Application Server side programs Server Dynamic Generation of resources Encoding Local GIS Application Tier, SQL SQL Business Logic Tier ISO/IEC 9075 Data preparation, analysis DBMS Server DataData update Tier and retrieval Architecture : OGC Standards DNS Server Identification Transfer of IP addressEncoded Information IP address / ServerURI Name / Host name RFC 1630 Client OGC "User Agent" HTTP Content-TypeWebserver RFC 2045 Document root RFC 2616 Static HTTP-Client HTTP HTTP-Client HTTP resources HTTP-Client 80 Internet 80 Communication Tier, PNG, JPG, … Web Tier XML / SVG OGC XML CGI protocolCGI w3.org/XML/ RFC 3875 Presentation Tier Application Server side programs Server Dynamic GenerationOGC of resources Encoding Local GIS Application Tier, SQL SQL Business Logic Tier ISO/IEC 9075 Data preparation, analysis DBMS Server Data Tier Data updateOGC and retrieval Outline Introduction Web Map Service (WMS) Styled Layer Descriptors Web Map Service Tiled (WMS-T) Web Feature Service (WFS) Web Coverage Service (WCS) Catalogue Service Web Feature Service Gazetteer (WFS-G, „Gazetteer Service“) Web Coordinate Transformation Service (WCTS) Web Terrain Service (WTS) GeoPackage 5 Gebiete 1. Aviation 2. Built Environment & 3D Vgl. http://www.opengeospatial.org/domain 3. BusinessBusiness Intelligence Intelligence 4. Defence & Intelligence (D&I) 5. Emergency Response & Disaster Management 6. Energy & Utilities 7. Geosciences & Environment 8. Government & Spatial Data Infrastructure 9. Mobile Internet & Location Services 10. Sensor Webs 11. University and Research Domains 2019 6 6 REQUEST FOR - COMMENTS (RFC) 2016/gi - Candidate Standard (CS) OGC Abstract Specification Adaption of ISO Standards is possible Feedback OGC Compliance Testing Portal Testbed Enhancements Engineering Reports (ER• CSW), Change Requests (CR)• WCS Implementation • WFS • WMS Specification ://www.unibw.de/inf4/professuren/geoinformatik/lehre/skripten/herbsttrimester Implementation/Development of products OGC Compliance Reference Implementations Testing Implementation intro.pdf/at_download/file - after: Wolfgang Reinhart after: Wolfgang Reinhart (2016). https standards - 1 - Objective: standardized7 products for the Modifiied market kapitel OGC Services Web Map Service (WMS) Styled Layer Descriptors Web Map Service Tiled (WMS-T) Web Feature Service (WFS) Web Coverage Service (WCS) Catalog Service Web Feature Service Gazetteer (WFS-G, „Gazetteer Service“) Web Coordinate Transformation Service (WCTS) Web Terrain Service (WTS) WPS OGC-Standards 3dP Ordering Services Framework for Earth ARML2.0 Observation Products Cat: ebRIM App Profile: Earth Observation Products OWS Context Catalogue Service PubSub CDB PUCK CityGML SWE Common Data Model Coordinate Transformation SWE Service Model Filter Encoding Sensor Model Language GML in JPEG 2000 Sensor Observation Service GeoAPI Sensor Planning Service GeoPackage SensorThings GeoSciML Simple Features GeoSPARQL Simple Features CORBA Geography Markup Language Simple Features OLE/COM GeoRSS Simple Features SQL Geospatial eXtensible Access Control Markup Language (GeoXACML) Styled Layer Descriptor Geospatial User Feedback (GUF) Symbology Encoding GroundwaterML Table Joining Service i3s TimeseriesML (tsml) IndoorGML WaterML InfraGML Web Coverage Processing Service KML Web Coverage Service Land and Infrastructure Web Feature Service Location Services (OpenLS) Web Map Context Moving Features Web Map Service NetCDF Web Map Tile Service Observations and Measurements Web Processing Service Open GeoSMS Web Service Common OpenMI WKT CRS OpenSearch Geo http://www.opengeospatial.org/docs/is [2019-07-09] Relevance of standards/services? 21] - 03 - [2018 From the viewpoint of GDI-DE (German SDI Governmental Body): essential under observation DE%20Standards - expiring de.org/display/Arch/Verzeichnis%20GDI - wiki.gdi optional https:// 10 Relevance of standards/services? II Australia/New Zealand - 10 1_17Nov2011.pdf [] - - gsdiassociation.org/images/publications/co http:// okbooks/SDI_Cookb2017 26ook_New_Zealand_v1 11 Relevance of standards/services? III WMS or WFS (2017)? OGC Certified Products 4% 5% WMS IS 1.3.0 9% WFS IS 1.1.0 WFS InterfacS 2.0 51% 31% WCS Interface Standard Corr. 2.0.1 WMTS IS 1.0.0 http://www.opengeospatial.org/resource/products/complia https://www.spatineo.com/blog/page/4/ [2019-07-08] nt [2019-07-08] 12 “The Web, and the Spatial Web, cannot depend on proprietary standards." [http://www.opengeospatial.org/ogc/faq/openness [2019-07-08]] 13 "Open standards” created in an open, international, participatory. consensus decision making industry process - in einem formalen, mitgliederbasierten Konsensprozess verabschiedet publicly available, free rights of distribution - frei und öffentlich verfügbar; Unencumbered by patents and other intellectual property; Anyone can download and use the standard(non-discriminatory); No license fees - keine Lizenzgebühren; Vendor and data neutral - anbieter- und datenneutral ; No single entity controls the standard. Does not discriminate against persons or groups - nicht diskriminierend [http://www.opengeospatial.org/ogc/faq/openness [2019-07-08]] [http://ggim.un.org/documents/Standards%20Guide%20for%20UNGGIM %20-%20Final.pdf [2019-07-08]] 14 Profiles proper subsets to improve the ease of implementation of an OGC standard to increase interoperability and to improve the ease of implementation of standards [2] "Profile beschreiben allgemeingültige Festlegungen in Bezug auf die Art der Datenbereitstellung. Zu den Daten werden keine inhaltlichen Festlegungen getroffen." [1] [1] Projektgruppe GDI-Standards (2013): AdV-Festlegungen zum Web Feature Service (WFS) (AdV-WFS-Profil Version 1.0.0). http://mobile.adv-online.de/AdV-Produkte/Standards-und-Produktblaetter/AdV- Profile/binarywriterservlet?imgUid=c8060312-b3c1-8541-cc29-56f2072e13d6&uBasVariant=11111111-1111-1111-1111- 111111111111 [2017-11-19] [2] after https://en.wikipedia.org/wiki/Web_Feature_Service [2018-02-26] 15 Render Pipeline - NRW.Archiv/08_05 - Web 3D Service. OGC™ OGC™ 3D Service. Web Kolbe (2005):Kolbe Paper Quadt, Thomas H. H. Thomas Quadt, Data Base Discussion https://www.sig3d.org/files/media/downloads/GDI 019_Web_3D_Service.pdf i.e.: WMS, WFS W3DS Udo After: WMTS 16 OGC Web Services OGC Reference Model: OGC Web Services (OWS) are defined using open non-proprietary Internet standards; in particular the World Wide Web (WWW) standards of HTTP, Uniform Resource Locators (URLs), Content Types and the Extensible Markup Language (XML). After http://www.opengeospatial.org/standards/orm [2019-07-08] 17 The basic metadata centered approach 18 GetCapabilities "Give me your metadata! Tell me what you offer!" 19 GDI-DE- grundlegend fundamental Web Map Service (WMS) 1.3.0 GetCapabilities Service Metadata - Informationen über die Inhalte und Funktionen des Servers GetMap map images - Karten in (überwiegend Rasterformaten) (JPEG, PNG, SVG, WebCGM, SVG) GetFeatureinfo (optional) Attribute data of single objects - Informationen über einzelne Objekte innerhalb einer Karte GDIDE- grudlegend fundamental Web Map Service (WMS) GetCapabilities Service Metadata - Informationen über die Inhalte und Funktionen des Servers GetMap map images - Karten in (überwiegend Rasterformaten) (JPEG, PNG, SVG, WebCGM, SVG) GetFeatureinfo (optional) Attribute data of single objects - Informationen über einzelne Objekte innerhalb einer Karte WMS: Overview 22 WMS is also published as ISO 19128:2005 CRS = coordinate reference system [pixels] Bounding box 23 Source: unknown WMS: GetCapabilities request Obtaining meta information – what is offered by the server, how, and who is responsible http://www.gis-news.de/wms/getmapcap.php? VERSION=1.1.1&SERVICE=WMS&REQUEST=GetCapabilities 24 WMS: GetCapabilities-Response and its use 25 WMS: GetMap request to get a portrayal of geodata https://rips-gdi.lubw.baden- wuerttemberg.de/arcgis/services/GDI/GDI_0100007500200036_AGGR/MapServer/WMSServer? SERVICE=WMS&VERSION=1.3.0&REQUEST=GetMap&CRS=EPSG:31467&BBOX=5372575.4860 247802,3439427.1733092428,5395540.3774968656,3453842.0264943382&WIDTH=476&HEIGHT= 530&LAYERS=0&STYLES=&EXCEPTIONS=XML&FORMAT=image/png&BGCOLOR=0xFEFFFF&T RANSPARENT=FALSE 26 Example: GDI_Schutzgebiete_Natur der LUBW http://rips-uis.lubw.baden- wuerttemberg.de/wms/cgi/GDI_SCHUTZGEBIET_NATUR?SERVICE=WMS&REQUEST=GetMap&VERSION=1.1.1&SRS= EPSG:31467&BBOX=3514000,5454000,3516300,5455000&WIDTH=600&HEIGHT=400&LAYERS=10001,10002,10003,1000
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