project presentation grass gis osgeo hacking event
play

Project presentation GRASS GIS OSGeo Hacking Event, Bolsena, - PowerPoint PPT Presentation

Project presentation GRASS GIS OSGeo Hacking Event, Bolsena, Italy Martin Landa landa.martin@gmail.com June 19, 2008 OSGeo Hacking Event, 16-22 June 2008 1 / 23 Outline Overview Project introduction GRASS and OSGeo Development


  1. — Project presentation GRASS GIS OSGeo Hacking Event, Bolsena, Italy — Martin Landa landa.martin@gmail.com June 19, 2008 OSGeo Hacking Event, 16-22 June 2008 1 / 23

  2. Outline Overview Project introduction GRASS and OSGeo Development Brief introduction wxGUI OSGeo Hacking Event, 16-22 June 2008 2 / 23

  3. Outline Overview Project introduction GRASS and OSGeo Development Brief introduction wxGUI OSGeo Hacking Event, 16-22 June 2008 3 / 23

  4. Outline Overview Project introduction GRASS and OSGeo Development Brief introduction wxGUI OSGeo Hacking Event, 16-22 June 2008 4 / 23

  5. Basic description GRASS (Geographic Resources Analysis Support System) ◮ Free Software for performing spatial analysis ◮ More than 350 modules for processing vector (2D/3D), raster and voxel data ◮ Interfaces to other programs in related domains like geostatistics, databases, mapserver and even other GIS software exist ◮ Can be served as a Desktop GIS and as the backbone of a complete GIS infrastructure OSGeo Hacking Event, 16-22 June 2008 5 / 23

  6. History GRASS History ◮ Originally developed in the beginning of the 1980s by the US Army Construction Engineering Research Laboratories (USA-CERL) and was published as a public domain software ◮ In 1995 the USA-CERL withdrew from the GRASS development ◮ Since 1999 GRASS is a free software licensed under GNU General Public Licence ◮ International development team formed (2001) OSGeo Hacking Event, 16-22 June 2008 6 / 23

  7. Features GRASS features ◮ 2D raster analysis and 3D voxel management (volumes) ◮ 2D/3D vector engine with SQL based DBMS support ◮ Image processing modules ◮ Vector network analysis, Linear Referencing System ◮ Visualization of 2D, 3D data layers and volumes ◮ Interoperable with standard raster and vector formats (GDAL/OGR) ◮ Works on GNU/Linux, Mac OS X, MS-Windows and other POSIX compliant platforms ◮ Modular architecture and scripting capabilities for batch processing OSGeo Hacking Event, 16-22 June 2008 7 / 23

  8. Outline Overview Project introduction GRASS and OSGeo Development Brief introduction wxGUI OSGeo Hacking Event, 16-22 June 2008 8 / 23

  9. GRASS & OSGeo ◮ GRASS project is a founding member of OSGeo ◮ 2007/12 GRASS migrated to OSGeo infrastructure ◮ Source code repository, http://svn.osgeo.org/grass ◮ Bug tracker, http://trac.osgeo.org/grass ◮ Website, http://grass.osgeo.org ◮ Mailing lists, http://lists.osgeo.org/mailman/listinfo ◮ Wiki, http://grass.osgeo.org/wiki ◮ 2008/02 GRASS project has all graduated from the incubation process and is now a full fledged OSGeo project OSGeo Hacking Event, 16-22 June 2008 9 / 23

  10. Outline Overview Project introduction GRASS and OSGeo Development Brief introduction wxGUI OSGeo Hacking Event, 16-22 June 2008 10 / 23

  11. Outline Overview Project introduction GRASS and OSGeo Development Brief introduction wxGUI OSGeo Hacking Event, 16-22 June 2008 11 / 23

  12. Devel’s point of view ◮ International development team, 46 people with write access ◮ Very large code-base (approx. 500,000 lines, 800,000 lines with comments) ◮ Mostly written in C (78%), Tcl/Tk (7%), shell script (5%) and Python (4%) ◮ Portable code, ANSI-C OSGeo Hacking Event, 16-22 June 2008 12 / 23

  13. Devel’s point of view ◮ International development team, 46 people with write access ◮ Very large code-base (approx. 500,000 lines, 800,000 lines with comments) ◮ Mostly written in C (78%), Tcl/Tk (7%), shell script (5%) and Python (4%) ◮ Portable code, ANSI-C + Many algorithms implemented + Project with history, large community - Old fashioned API, sometimes incompletely documented, not so attractive for newcomers OSGeo Hacking Event, 16-22 June 2008 12 / 23

  14. Devel’s point of view ◮ Devel branch for 6.x ◮ 23th April 2008 released 6.3.0 ◮ Main stable release of 2008, 6.4.0 (August?) ◮ SVN trunk used for GRASS 7 development ◮ Code reorganization ◮ Raster library replacement (2D/3D) ◮ Live links to external raster/vector data sources (GDAL/OGR) ◮ Better metadata support ◮ Display architecture reimplentation (floating-point coordinates, map symbols, styles support, etc.) ◮ GUI-oriented improvements ◮ . . . OSGeo Hacking Event, 16-22 June 2008 13 / 23

  15. Outline Overview Project introduction GRASS and OSGeo Development Brief introduction wxGUI OSGeo Hacking Event, 16-22 June 2008 14 / 23

  16. GRASS GUI Evolution Story Motto While the early decision to first develop GRASS as a command-line system remained good, the need to provide users with a GUI was increasingly difficult to ignore. + GRASS shows high capability to analyze and manipulate data − Incomplete and scarcely intuitive GUI OSGeo Hacking Event, 16-22 June 2008 15 / 23

  17. GRASS GUI Evolution Story Motto While the early decision to first develop GRASS as a command-line system remained good, the need to provide users with a GUI was increasingly difficult to ignore. + GRASS shows high capability to analyze and manipulate data − Incomplete and scarcely intuitive GUI ◮ All native GUIs written in Tcl/Tk (from “TCLTKGRASS” in 1999 to “GIS Manager” 2006) ◮ Limitations of Tcl/Tk toolkit appeared to be fundamental for the GUI future development OSGeo Hacking Event, 16-22 June 2008 15 / 23

  18. GRASS GUI Evolution Story Old-fashioned Tcl/Tk-based GUI in GRASS 6.2 OSGeo Hacking Event, 16-22 June 2008 15 / 23

  19. wxGUI Development Goals ◮ Portability , fully functional on the GNU/Linux, Unix, Mac-OS and MS Windows operating systems ◮ Ease of Use , providing all the features common to state of the art GIS applications ◮ Extensibility , all tools integrated into GUI, including digitization, georectification, image classification, etc. OSGeo Hacking Event, 16-22 June 2008 16 / 23

  20. wxGUI Development wxWidgets ◮ Powerful Python binding (know as wxPython ) ◮ Uses native platform SDK (native look and feel) ◮ OpenGL widget (for NVIZ replacement) OSGeo Hacking Event, 16-22 June 2008 17 / 23

  21. wxGUI Development wxWidgets ◮ Powerful Python binding (know as wxPython ) ◮ Uses native platform SDK (native look and feel) ◮ OpenGL widget (for NVIZ replacement) Python Python as “easy-to-learn”, object oriented, currently “very popular” language should enable more people actively contribute on the development. OSGeo Hacking Event, 16-22 June 2008 17 / 23

  22. wxGUI Development ◮ Project started in the beginning of 2007 ◮ About 35,000 lines of code (Python/C++) ◮ Experimental GUI prototype included in the last release 6.3.0 ◮ Experimental GUI option for GRASS 6.4 (the main release of 2008) and default for planned GRASS 7 releases ◮ The GUI is composed by two components: OSGeo Hacking Event, 16-22 June 2008 18 / 23

  23. wxGUI Development ◮ Project started in the beginning of 2007 ◮ About 35,000 lines of code (Python/C++) ◮ Experimental GUI prototype included in the last release 6.3.0 ◮ Experimental GUI option for GRASS 6.4 (the main release of 2008) and default for planned GRASS 7 releases ◮ The GUI is composed by two components: ◮ Layer Manager allows to run different GRASS modules from menu, includes map layer management, integrated command-line prompt, and command output window OSGeo Hacking Event, 16-22 June 2008 18 / 23

  24. wxGUI Development Layer Manager – layer management tab OSGeo Hacking Event, 16-22 June 2008 18 / 23

  25. wxGUI Development Layer Manager – command log area tab OSGeo Hacking Event, 16-22 June 2008 18 / 23

  26. wxGUI Development ◮ Project started in the beginning of 2007 ◮ About 35,000 lines of code (Python/C++) ◮ Experimental GUI prototype included in the last release 6.3.0 ◮ Experimental GUI option for GRASS 6.4 (the main release of 2008) and default for planned GRASS 7 releases ◮ The GUI is composed by two components: ◮ Layer Manager allows to run different GRASS modules from menu, includes map layer management, integrated command-line prompt, and command output window ◮ Map Display Window(s) integrates basic tools for zooming, panning, data querying, decorations (north arrows, barscale, etc.) OSGeo Hacking Event, 16-22 June 2008 18 / 23

  27. wxGUI Development Map Display Window OSGeo Hacking Event, 16-22 June 2008 18 / 23

  28. wxGUI status wxGUI components ◮ Implemented: ◮ Core (Layer Manager, Map Display Window) ◮ Vector digitizer ◮ Attribute Table Manager OSGeo Hacking Event, 16-22 June 2008 19 / 23

  29. wxGUI status wxGUI components ◮ Implemented: ◮ Core (Layer Manager, Map Display Window) ◮ Vector digitizer ◮ Attribute Table Manager ◮ Workspace management (gxw – XML file) ◮ User GUI settings ◮ Georecifier ◮ Profile analysis tool ◮ Histogramming raster maps and images ◮ Location wizard ◮ Raster mapcalculator OSGeo Hacking Event, 16-22 June 2008 19 / 23

  30. wxGUI status wxGUI components ◮ Under development: ◮ Cartographic tools ◮ 2.5/3D visualization (NVIZ replacement) OSGeo Hacking Event, 16-22 June 2008 20 / 23

  31. wxGUI status wxGUI components ◮ Under development: ◮ Cartographic tools ◮ 2.5/3D visualization (NVIZ replacement) ◮ To be developed: ◮ Raster digitizer ◮ SDI/MDI layout ◮ Graphical modeler ◮ . . . OSGeo Hacking Event, 16-22 June 2008 20 / 23

  32. GRASS – multiplatform desktop GIS GNU/Linux (wxGUI, 2008/02) OSGeo Hacking Event, 16-22 June 2008 21 / 23

Download Presentation
Download Policy: The content available on the website is offered to you 'AS IS' for your personal information and use only. It cannot be commercialized, licensed, or distributed on other websites without prior consent from the author. To download a presentation, simply click this link. If you encounter any difficulties during the download process, it's possible that the publisher has removed the file from their server.

Recommend


More recommend