SVG oriented Framework for Web Map Services 1 PHPMyWMS Prof. Dr.-Ing. Franz-Josef Behr PHPMyWMS - an Open Source based, SVG oriented Framework for extended.

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Presentation transcript:

SVG oriented Framework for Web Map Services 1 PHPMyWMS Prof. Dr.-Ing. Franz-Josef Behr PHPMyWMS - an Open Source based, SVG oriented Framework for extended Web Map Services Prof. Dr.-Ing. Franz-Josef Behr University of Applied Sciences Stuttgart, Department of Geomatics, Computer Science and Mathematics, Schellingstraße 24, D Stuttgart

SVG oriented Framework for Web Map Services 2 PHPMyWMS Prof. Dr.-Ing. Franz-Josef Behr Overview Architecture Overview over OGC‘s Web Map Service (WMS) Key features of Scalable Vector Graphics (SVG) Server side implementation Client Implementations Conclusion and Outlook

SVG oriented Framework for Web Map Services 3 PHPMyWMS Prof. Dr.-Ing. Franz-Josef Behr Architecture Internet http Webserver http CGI protocol Document root Static Documents Server side Programs Dynamic Generation of SVG documents Client "User Agent" SVG Viewer XML / SVG DBMS Visualization Data preparation GIS (MapInfo, GeoMedia)

SVG oriented Framework for Web Map Services 4 PHPMyWMS Prof. Dr.-Ing. Franz-Josef Behr GetCapabilities request

SVG oriented Framework for Web Map Services 5 PHPMyWMS Prof. Dr.-Ing. Franz-Josef Behr GetMap request news.de/wms/getmapcap.php?VERSION=1.1.1&BBOX= , , , &LAYERS=airports,ctybdpy2&STYLES=,,&REQUEST=Get Map&style=&SRS=EPSG:26715&4340&WIDTH=800&HEIGHT=600&FORMAT=image/svg+xml&EXCEPTIONS=application/vnd.ogc.se_xml

SVG oriented Framework for Web Map Services 6 PHPMyWMS Prof. Dr.-Ing. Franz-Josef Behr GetFeatureInfo request

SVG oriented Framework for Web Map Services 7 PHPMyWMS Prof. Dr.-Ing. Franz-Josef Behr Scalable Vector Graphics: Cartographic application

SVG oriented Framework for Web Map Services 8 PHPMyWMS Prof. Dr.-Ing. Franz-Josef Behr Scalable Vector Graphics: Key features and benefits Recommendation of World Wide Web Consortium (w3.org) Several profiles, including mobile profiles SVG Tiny (SVGT) and SVG Basic Advantages –XML based, combination with other XML technologies like XLink True geo-data, used as visualization for GML conformant to DOM, analysis & modification using JavaScript –Outstanding graphical quality – very attractive! –Accessibility and searchability

SVG oriented Framework for Web Map Services 9 PHPMyWMS Prof. Dr.-Ing. Franz-Josef Behr Scalable Vector Graphics: Key features and benefits II Increasing Browser support (Firefox, Opera) Plug-ins and Stand-alone viewer applications Mobile viewers Conversion from many GIS formats / systems

SVG oriented Framework for Web Map Services 10 PHPMyWMS Prof. Dr.-Ing. Franz-Josef Behr The WMS Server Tier Main components: –PHP based applications –Geo-Database (currently MySQL) extents GetCapabilitiesGetMap, GetFeatureInfo

SVG oriented Framework for Web Map Services 11 PHPMyWMS Prof. Dr.-Ing. Franz-Josef Behr The Client Tier Standard browsers (SVG enabled) browser based WMS client (JavaScript based GUI) Mobile client

SVG oriented Framework for Web Map Services 12 PHPMyWMS Prof. Dr.-Ing. Franz-Josef Behr Browser based WMS client JavaScript based GUI Uses Asynchronous JavaScript and XML (AJAX) technology - asynchronous progress of data exchanging with servers as background process

SVG oriented Framework for Web Map Services 13 PHPMyWMS Prof. Dr.-Ing. Franz-Josef Behr Mobile client WMS client for mobile devices implemented based on SVGT and Java 2 Micro Edition (J2ME). Mobile WMS clients provides a graphical user interface typical functions for exploration of the map obtained from the WMS server –Server selection –zoom –Pan See PS III-1: Mobile GIS Technology

SVG oriented Framework for Web Map Services 14 PHPMyWMS Prof. Dr.-Ing. Franz-Josef Behr PHPMyWMS on the Web Supports SVG format as well as raster formats and SWF and PDF Open Source Homepage: Additionally hosted at sourceforge.net CVS repository

SVG oriented Framework for Web Map Services 15 PHPMyWMS Prof. Dr.-Ing. Franz-Josef Behr Conclusion and Outlook Prove of concept: SVG is well suited for storing, transforming, displaying and transferring geo-data. Possible improvements : –Support of Styled Layer Descriptor (SLD) specification or user- defined symbolization. –Extension to cascading server. –LBS extension: User support like GSM-based positioning techniques, or GPS support would be helpful. –Extending browser based client –Adding additional services (like better GetFeature support based on geo-coordinates) –Better sample data in the geo-database.

SVG oriented Framework for Web Map Services 16 PHPMyWMS Prof. Dr.-Ing. Franz-Josef Behr Literature