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Geodata, Databases and Web Mapping. 2/9/2014Timo Damm, GIS / Visualisierung, CAU Kiel, Germany Timeline 1989: Birth of the WWW 1993: march: CERN announced.

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Presentation on theme: "Geodata, Databases and Web Mapping. 2/9/2014Timo Damm, GIS / Visualisierung, CAU Kiel, Germany Timeline 1989: Birth of the WWW 1993: march: CERN announced."— Presentation transcript:

1 Geodata, Databases and Web Mapping

2 2/9/2014Timo Damm, GIS / Visualisierung, CAU Kiel, Germany Timeline 1989: Birth of the WWW 1993: march: CERN announced web as free, CERN announced that access to the web will be free for all. june: HTML 1.0. [8] The first version of HTML [8]HTML july: Xerox PARC Map Viewer 1996:UMN MapServer 1.0, Developed as Part of the NASA ForNet Project.MapServer NASA 2003:NASA World Wind 2004:OpenStreetMap 2005:february: Google Maps june: Google Earth 2006:Wikimapia extracted from: Wikipedia – Web Mapping

3 2/9/2014Timo Damm, GIS / Visualisierung, CAU Kiel, Germany Web Mapping status 2008 Some years ago: web mapping could just be realized by some companies, institutes and mapping agencies. Expensive hard- and software and specialists like cartographers and geomatics engineers were required Nowadays: skilled people use freely available web mapping services, some born in the open-source community. Barriers: Expensive geodata and technical complexity (e.g. data harmonization, missing standards)

4 2/9/2014Timo Damm, GIS / Visualisierung, CAU Kiel, Germany Mainstream pros and cons Distributed data sources Pros: Integration of data from all over the world enriches the possibilities and provide in general much more information as disjoint data storage. If data exchange and integration of distributed data sources works, data of one project can be set in relation to other projects datasets. Cons: untrained personal can cause many trouble by not respecting copyrights, data types, projections and moreover redistribute incorrect data

5 2/9/2014Timo Damm, GIS / Visualisierung, CAU Kiel, Germany Web Mapping progress OCG WMSOCG SLD OpenStreetMaps WikiMapia

6 2/9/2014Timo Damm, GIS / Visualisierung, CAU Kiel, Germany Aims of the end product 1.Viewing OR Mapping 2.Analysis 3.Creating and Manipulating 4.Conversion 5.Sharing

7 2/9/2014Timo Damm, GIS / Visualisierung, CAU Kiel, Germany Steps to realize web mapping 1.Hardware: Computer Internet Connection 2.Software:Web Server Web Mapping Server Mapping Data Mapping Metadata

8 2/9/2014Timo Damm, GIS / Visualisierung, CAU Kiel, Germany Meta Data Metadata (meta data, or sometimes metainformation) is "data about data", of any sort in any media. An item of metadata may describe an individual datum, or content item, or a collection of data including multiple content items and hierarchical levels, for example a database schema. In data processing, metadata is definitional data that provides information about or documentation of other data managed within an application or environment. from: Wikipedia:Metadata

9 2/9/2014Timo Damm, GIS / Visualisierung, CAU Kiel, Germany Different Geodata Types Point Data Positions in general, e.g. cities, boreholes, sensor pos. Line Data Streets, Ship Tracks, Fractures, … 2D Polygon Data Political Borders, Landuse, Catastral Maps (?) 2.5D Polygon Data (Flying Carpets) Topography, Bathymetry, Gravity/Magnetic maps, … 3D Volumetric Body Data Density/Susceptibility Bodies, Reservoirs… Difference RASTER / VECTOR data

10 2/9/2014Timo Damm, GIS / Visualisierung, CAU Kiel, Germany Storage Spoken words Maps of leather, papyrus, paper, … Single Digital files (fixed column, tab seperated, XML) Database (Relational, Object-Relational, Object-Oriented)

11 2/9/2014Timo Damm, GIS / Visualisierung, CAU Kiel, Germany Different Web Map Servers Free / Open Source Open Geospatial Consortium (OGC) GeoServer (freier WMS-Server, in Java impl.) UMN Mapserver (freier WMS-Server) deegree opensource WMS SUAS Mapserver (Open Source extended WMS-Server) Commercial ESRI ArcGIS + ArcIMS Autodesk MapGuide Enterprise/Studio 2007 MapInfo MapXtreme 2005

12 2/9/2014Timo Damm, GIS / Visualisierung, CAU Kiel, Germany UMN MapServer MapServer GDAL (raster) FWTools (http://fwtools.maptools.org/) OGR (vector) similar to GMThttp://fwtools.maptools.org/ PHPmapscriptconnects to WebServer via PHP + OpenEV ( GRASS, PostGIS, etc.) Complies to OGC standards and provides WMS,WFS,WCS interface Query results in an XML text output

13 2/9/2014Timo Damm, GIS / Visualisierung, CAU Kiel, Germany Problem: Data Types (Vector) Vector Data e.g. approx. 30 entries.http://www.gdal.org/ôgr/ogr_formats.html

14 2/9/2014Timo Damm, GIS / Visualisierung, CAU Kiel, Germany Problem: Data Types (raster) Raster Data e.g. approx. 80 entries!http://www.gdal.org/formats_list.html

15 2/9/2014Timo Damm, GIS / Visualisierung, CAU Kiel, Germany Example: DWD Deutscher Wetter Dienst:

16 2/9/2014Timo Damm, GIS / Visualisierung, CAU Kiel, Germany Example: USGS Earthquakes Near Realtime Seismic monitor:

17 2/9/2014Timo Damm, GIS / Visualisierung, CAU Kiel, Germany Example: GoYellow GoYellow at:

18 2/9/2014Timo Damm, GIS / Visualisierung, CAU Kiel, Germany Example: NASA World Wide World Wind website at NASA: Elevation data viewer Landsat data SRTM 30m/90m Blue Marble

19 2/9/2014Timo Damm, GIS / Visualisierung, CAU Kiel, Germany Example: Google Earth Google Earth at: Google Earth $0 Google Earth Pro $20 Google Earth Plus $400

20 2/9/2014Timo Damm, GIS / Visualisierung, CAU Kiel, Germany Example Intagraf Course

21 2/9/2014Timo Damm, GIS / Visualisierung, CAU Kiel, Germany Example: Google Maps Google Maps API on my website. Refer to:

22 2/9/2014Timo Damm, GIS / Visualisierung, CAU Kiel, Germany References !!! !!!http://de.wikipedia.org/wiki/Web_Map_Service 1.Schuurman: GIS – a short introduction, 2004, Blackwell Publishing LTD., Malden, USA (ISBN: ) 2.Masser, Salgé: GIS and GENERALIZATION, Methodology and Practice, 1995, Taylor & Francis, London, UK (ISBN: ) 3.Kappas: Geographische Informationssysteme, 2001, Westermann, Germany (ISBN: ) 4.Mitchell: Web Mapping Illustrated, 2005, OReilly, Sebastopol, USA (ISBN: ) 5.Erle, Gibson, Walsh: Mapping Hacks, Tips & Tools for Electronic Cartography, 2005, OReilly, Sebastopol, USA (ISBN: )


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