1. Open Source Geospatial Foundation Taiwan Chapter Open Source GIS in Taiwan: Current and Future Dongpo Deng Taipei International Conference on Digital Earth 2007 at Chinese Culture University 中國文化大學 5.18.2007

2. What is Open Source and How Does it Work Freely available software and source code with limited licensing restrictions on distribution Collaborative, community-based software development process Proactively engages software users with software developers The Internet provides the backbone for a virtual software development team Adopted from David McIlhagga, Introduction to Open Source GIS, Open source GIS Conference 2004

3. Benefits of the Open Source Model No licensing fees –Resources are allocated to building applications and enhancing software, not licensing multiple machines Enables development of highly customized applications based on client’s needs Vibrant user community Development priorities are driven by end-user needs Issues can be resolved in-house Adopted from David McIlhagga, Introduction to Open Source GIS, Open source GIS Conference 2004

4. Open Source in GIS Open Source has played a significant, thought not always very visible role in the development of GIS technology. Ex. GDAL and PROJ4 libraries The new century has also seen the growth of integration and service companies organized primarily around use of open source technology. Ex. DM Solutions Group, Intevation Gmbh, CCGIS, and Camptocamp SA. All proprietary GIS software vendors are using some Open Source GIS components in their products. Ex. Libgeotiif and GDAL/OGR. Adopted from Frank Warderman, OSGIS Rising, GIS Development, 11(1):44-45.

5. Two Tribes in Open Source GIS C Tribe –UMN Mapserver –GRASS –OpenEV –QGIS –OGR/GDAL –PROJ4 –GEOS –PostGIS Java Tribe –GeoTools –GeoServer –DeeGree –OpenMap –JUMP –uDig OpenGIS WMS/WFS Adopted from Paul Ramsey, Survey of Open Source GIS, Open source GIS Conference 2004 JDBC

6. C Tribe OGR/GDAL Mapserver GRASS PostGIS OpenEV OSSIM Proj4 GEOS QGIS Thuban GMT Adopted from Paul Ramsey, Survey of Open Source GIS, Open source GIS Conference 2004

7. C Libraries GDAL –Raster Format Reader / Writer OGR –Vector Format Reader / Writer PROJ4 –Coordinate Reprojection GEOS –Geometry Objects and Functions Adopted from Paul Ramsey, Survey of Open Source GIS, Open source GIS Conference 2004

8. C Servers Mapserver –OpenGIS Web Map Server –OpenGIS Web Feature Server –OGR / GDAL / PROJ4 –PostGIS / ArcSDE / Oracle Spatial PostGIS –OpenGIS Simple Features for SQL –PROJ4 / GEOS Adopted from Paul Ramsey, Survey of Open Source GIS, Open source GIS Conference 2004

9. Mapserver PostGIS ArcSDE Oracle Shape MapInfo WMS Mapserver WFS WMS TIFF Adopted from Paul Ramsey, Survey of Open Source GIS, Open source GIS Conference 2004

10. PostGIS LAN WMS / WFS PostGIS Internet JUMP QGIS WFS Client WMS Client Adopted from Paul Ramsey, Survey of Open Source GIS, Open source GIS Conference 2004

11. C Applications OpenEV QGIS Thuban GRASS OSSIM GMT Viewers Processors Adopted from Paul Ramsey, Survey of Open Source GIS, Open source GIS Conference 2004

12. OpenEV

13. QGIS Adopted from Paul Ramsey, Survey of Open Source GIS, Open source GIS Conference 2004

14. Thuban

15. Adopted from Paul Ramsey, Survey of Open Source GIS, Open source GIS Conference 2004 GRASS

16. Adopted from Paul Ramsey, Survey of Open Source GIS, Open source GIS Conference 2004 OSSIM Open Source Software Image Map

17. GMT Generic Mapping Tools UNIX Philosophy –Many small tools, chained together Gridding, Contouring, Plotting Surface Models Adopted from Paul Ramsey, Survey of Open Source GIS, Open source GIS Conference 2004

18. Java Tribe GeoTools OpenMap GeoServer JTS Topology Suite WKB4J GML4J JUMP Unified Mapping Platform JCS Conflation Suite uDig / JUMP2 DeeGree Adopted from Paul Ramsey, Survey of Open Source GIS, Open source GIS Conference 2004

19. Java Libraries JTS Topology Suite –OpenGIS Geometries and Methods GeoTools –Data Formats, Java GIS Toolkit WKB4J –Java Well-Known Binary Reader / Writer GML4J –Java GML Reader / Writer

20. Java Applications OpenMap DeeGree JUMP / JCS GeoServer uDig JTS Based Standalone

21. OpenMap Oldest Complete Java Toolkit Telephone Company Project (BBN) Design Application (not Data) Focused

22. DeeGree Academic Roots –Bonn University Message Passing API OpenGIS Standards Server Focused (WMS, WFS, SLD)

23. JUMP / JCS Specialized Original Vision (Conflation) General Purpose Tool Editing, Processing, Transforming

24. GeoServer OpenGIS WFS-T Web Feature Server - Transactional OpenGIS WMS (Beta) Database Datasources + Shape Adopted from Paul Ramsey, Survey of Open Source GIS, Open source GIS Conference 2004

25. uDig User-friendly Desktop Internet GIS WFS, WMS, WRS PostGIS, ArcSDE, Oracle Spatial Printing, Reprojection Shape, GeoTIFF

26. Pros and Cons on OSGIS Strengths Server Side Heterogeneous Environments Performance Standards Support Complex or Custom Applications Weaknesses Interactive Desktop Paper Production Lowest Common Denominator “ Standard ” Applications Adopted from Paul Ramsey, Survey of Open Source GIS, Open source GIS Conference 2004

27. OSGIS in Taiwan Low Usage, unfavorable experience, and less tutorials in Tradition Chinese. The academic groups are might interested, but the governmental agencies are afraid of OSGIS. There is need of volunteer for promoting and consulting for OSGIS. With international trends of Geo-Information, there is lack of voice from OSGIS in Taiwan.

28. OSGeo Taiwan A group of people coming from different fields are interested in Open Source GIS. OSGeo Taiwan Chapter is a voluntary organization currently. Initial membership would like make it to legal body.

29. The missions of OSGeo Taiwan To facilitate the development of open source geo-spatial software in Taiwan. Advocacy and education of open source geo-spatial software. To promote collecting and sharing of geo-spatial data in public and private sector. Act as a bridge between various groups like Developers, Application Users, NGOs, Government departments. Being a consultant of open source geo-spatial software by providing resource such as tutorials, technical guideline, workshop, and so on.

30. Open Source Geospatial Foundation Taiwan Chapter Thank you for your attention! Coming OSGeo workshop at Academia Sinica Contact me: dongpo@iis.sinica.edu.tw Mailing list: osgeo-talk@lists.openfoundry.org OSGeo Taiwan Chapter: http://wiki.osgeo.org/index.php/Taiwan