[QGIS-trac] Re: [Quantum GIS] #2144: Grass Raster Loading causes Access Violation - 1.3.0 Mimas

Quantum GIS qgis at qgis.org
Mon Nov 30 18:06:43 EST 2009


#2144: Grass Raster Loading causes Access Violation - 1.3.0 Mimas
--------------------------------------------------------------+-------------
        Reporter:  cyanyde                                    |         Owner:  nobody                              
            Type:  bug                                        |        Status:  new                                 
        Priority:  critical: causes crash or data corruption  |     Milestone:  Version 1.4.0                       
       Component:  Rasters                                    |       Version:  1.3.0                               
      Resolution:                                             |      Keywords:  Access Violation Unhandled exception
Platform_version:                                             |      Platform:  Windows                             
        Must_fix:  No                                         |   Status_info:  0                                   
--------------------------------------------------------------+-------------
Comment (by cyanyde):

 Uninstalled OSGeo 1.3 mimas, installed 1.4 qgis-dev 61 , no change:


 {{{
 'qgis.exe': Loaded 'C:\OSGeo4W\apps\qgis-dev\bin\qgis.exe'
 'qgis.exe': Loaded 'C:\WINDOWS\system32\ntdll.dll'
 'qgis.exe': Loaded 'C:\WINDOWS\system32\kernel32.dll'
 'qgis.exe': Loaded 'C:\WINDOWS\system32\shell32.dll'
 'qgis.exe': Loaded 'C:\WINDOWS\system32\advapi32.dll'
 'qgis.exe': Loaded 'C:\WINDOWS\system32\rpcrt4.dll'
 'qgis.exe': Loaded 'C:\WINDOWS\system32\secur32.dll'
 'qgis.exe': Loaded 'C:\WINDOWS\system32\gdi32.dll'
 'qgis.exe': Loaded 'C:\WINDOWS\system32\user32.dll'
 'qgis.exe': Loaded 'C:\WINDOWS\system32\msvcrt.dll'
 'qgis.exe': Loaded 'C:\WINDOWS\system32\shlwapi.dll'
 'qgis.exe': Loaded 'C:\OSGeo4W\bin\QtSql4.dll', Binary was not built with
 debug information.
 'qgis.exe': Loaded 'C:\OSGeo4W\bin\libpq.dll', Binary was not built with
 debug information.
 'qgis.exe': Loaded 'C:\WINDOWS\system32\wsock32.dll'
 'qgis.exe': Loaded 'C:\WINDOWS\system32\ws2_32.dll'
 'qgis.exe': Loaded 'C:\WINDOWS\system32\ws2help.dll'
 'qgis.exe': Loaded 'C:\WINDOWS\system32\msvcr71.dll'
 'qgis.exe': Loaded 'C:\WINDOWS\system32\shfolder.dll'
 'qgis.exe': Loaded 'C:\WINDOWS\system32\odbc32.dll'
 'qgis.exe': Loaded 'C:\WINDOWS\system32\comctl32.dll'
 'qgis.exe': Loaded 'C:\WINDOWS\system32\comdlg32.dll'
 'qgis.exe': Loaded 'C:\OSGeo4W\bin\QtCore4.dll', Binary was not built with
 debug information.
 'qgis.exe': Loaded 'C:\WINDOWS\system32\ole32.dll'
 'qgis.exe': Loaded 'C:\OSGeo4W\bin\zlib_osgeo.dll', Binary was not built
 with debug information.
 'qgis.exe': Loaded
 'C:\WINDOWS\WinSxS\x86_Microsoft.VC90.CRT_1fc8b3b9a1e18e3b_9.0.30729.
 4148_x-ww_d495ac4e\msvcp90.dll'
 'qgis.exe': Loaded
 'C:\WINDOWS\WinSxS\x86_Microsoft.VC90.CRT_1fc8b3b9a1e18e3b_9.0.30729.
 4148_x-ww_d495ac4e\msvcr90.dll'
 'qgis.exe': Loaded 'C:\OSGeo4W\apps\qgis-dev\bin\qgis_gui.dll'
 'qgis.exe': Loaded 'C:\OSGeo4W\apps\qgis-dev\bin\qgis_core.dll'
 'qgis.exe': Loaded 'C:\OSGeo4W\bin\QtXml4.dll', Binary was not built with
 debug information.
 'qgis.exe': Loaded 'C:\OSGeo4W\bin\QtGui4.dll', Binary was not built with
 debug information.
 'qgis.exe': Loaded 'C:\WINDOWS\system32\oleaut32.dll'
 'qgis.exe': Loaded 'C:\WINDOWS\system32\imm32.dll'
 'qgis.exe': Loaded 'C:\WINDOWS\system32\winmm.dll'
 'qgis.exe': Loaded 'C:\WINDOWS\system32\winspool.drv'
 'qgis.exe': Loaded 'C:\OSGeo4W\bin\QtNetwork4.dll', Binary was not built
 with debug information.
 'qgis.exe': Loaded 'C:\OSGeo4W\bin\QtSvg4.dll', Binary was not built with
 debug information.
 'qgis.exe': Loaded 'C:\OSGeo4W\bin\geos_c.dll'
 'qgis.exe': Loaded 'C:\WINDOWS\system32\msvcp71.dll'
 'qgis.exe': Loaded 'C:\OSGeo4W\bin\gdal16.dll', Binary was not built with
 debug information.
 'qgis.exe': Loaded 'C:\OSGeo4W\bin\ogdi_32b1.dll', Binary was not built
 with debug information.
 'qgis.exe': Loaded 'C:\OSGeo4W\bin\libexpat.dll', Binary was not built
 with debug information.
 'qgis.exe': Loaded 'C:\OSGeo4W\bin\proj.dll'
 'qgis.exe': Loaded 'C:\OSGeo4W\bin\xerces-c_2_7.dll'
 'qgis.exe': Loaded 'C:\OSGeo4W\bin\hdf_fw.dll', Binary was not built with
 debug information.
 'qgis.exe': Loaded 'C:\OSGeo4W\bin\jpeg_osgeo.dll', Binary was not built
 with debug information.
 'qgis.exe': Loaded 'C:\OSGeo4W\bin\mfhdf_fw.dll', Binary was not built
 with debug information.
 'qgis.exe': Loaded 'C:\OSGeo4W\bin\netcdf.dll', Binary was not built with
 debug information.
 'qgis.exe': Loaded 'C:\OSGeo4W\bin\geotiff.dll', Binary was not built with
 debug information.
 'qgis.exe': Loaded 'C:\OSGeo4W\bin\libtiff.dll'
 'qgis.exe': Loaded 'C:\OSGeo4W\bin\jpeg12_osgeo.dll', Binary was not built
 with debug information.
 'qgis.exe': Loaded 'C:\OSGeo4W\bin\sqlite3.dll', Binary was not built with
 debug information.
 'qgis.exe': Loaded 'C:\OSGeo4W\bin\libmysql.dll', Binary was not built
 with debug information.
 'qgis.exe': Loaded 'C:\OSGeo4W\bin\hdf5dll.dll', Binary was not built with
 debug information.
 'qgis.exe': Loaded 'C:\OSGeo4W\bin\zlib1.dll', Binary was not built with
 debug information.
 'qgis.exe': Loaded 'C:\OSGeo4W\bin\szlibdll.dll', Binary was not built
 with debug information.
 'qgis.exe': Loaded 'C:\OSGeo4W\bin\libcurl.dll', Binary was not built with
 debug information.
 'qgis.exe': Loaded 'C:\OSGeo4W\bin\libeay32.dll', Binary was not built
 with debug information.
 'qgis.exe': Loaded 'C:\OSGeo4W\bin\ssleay32.dll', Binary was not built
 with debug information.
 'qgis.exe': Loaded 'C:\OSGeo4W\bin\iconv.dll'
 'qgis.exe': Loaded 'C:\WINDOWS\WinSxS\x86_Microsoft.Windows.Common-
 Controls_6595b64144ccf1df_6.0.2600.5512_x-ww_35d4ce83\comctl32.dll'
 'qgis.exe': Loaded 'C:\WINDOWS\system32\odbcint.dll', Binary was not built
 with debug information.
 'qgis.exe': Loaded 'C:\WINDOWS\system32\msctf.dll'
 'qgis.exe': Loaded 'C:\WINDOWS\system32\msctfime.ime'
 'qgis.exe': Loaded 'C:\WINDOWS\system32\uxtheme.dll'
 'qgis.exe': Loaded 'C:\OSGeo4W\apps\qt4\plugins\imageformats\qgif4.dll',
 Binary was not built with debug information.
 'qgis.exe': Loaded 'C:\OSGeo4W\apps\qt4\plugins\imageformats\qico4.dll',
 Binary was not built with debug information.
 'qgis.exe': Loaded 'C:\OSGeo4W\apps\qt4\plugins\imageformats\qjpeg4.dll',
 Binary was not built with debug information.
 'qgis.exe': Loaded 'C:\OSGeo4W\apps\qt4\plugins\imageformats\qmng4.dll',
 Binary was not built with debug information.
 'qgis.exe': Loaded 'C:\OSGeo4W\apps\qt4\plugins\imageformats\qsvg4.dll',
 Binary was not built with debug information.
 'qgis.exe': Loaded 'C:\OSGeo4W\apps\qt4\plugins\imageformats\qtiff4.dll',
 Binary was not built with debug information.
 'qgis.exe': Loaded 'C:\WINDOWS\system32\userenv.dll'
 'qgis.exe': Loaded 'C:\WINDOWS\system32\mslbui.dll'
 'qgis.exe': Loaded 'C:\WINDOWS\system32\xpsp2res.dll', Binary was not
 built with debug information.
 'qgis.exe': Loaded 'C:\OSGeo4W\apps\qgis-
 dev\plugins\coordinatecaptureplugin.dll'
 'qgis.exe': Loaded 'C:\OSGeo4W\apps\qgis-
 dev\plugins\copyrightlabelplugin.dll'
 'qgis.exe': Loaded 'C:\OSGeo4W\apps\qgis-
 dev\plugins\delimitedtextplugin.dll'
 'qgis.exe': Loaded 'C:\OSGeo4W\apps\qgis-
 dev\plugins\delimitedtextprovider.dll'
 'qgis.exe': Loaded 'C:\OSGeo4W\apps\qgis-dev\plugins\diagramoverlay.dll'
 'qgis.exe': Loaded 'C:\OSGeo4W\apps\qgis-
 dev\plugins\dxf2shpconverterplugin.dll'
 'qgis.exe': Loaded 'C:\OSGeo4W\apps\qgis-dev\plugins\evis.dll'
 'qgis.exe': Loaded 'C:\OSGeo4W\apps\qgis-dev\plugins\georefplugin.dll'
 'qgis.exe': Loaded 'C:\OSGeo4W\bin\gsl.dll'
 'qgis.exe': Loaded 'C:\OSGeo4W\bin\cblas.dll'
 'qgis.exe': Loaded 'C:\OSGeo4W\apps\qgis-
 dev\plugins\gpsimporterplugin.dll'
 'qgis.exe': Loaded 'C:\OSGeo4W\apps\qgis-dev\plugins\gpxprovider.dll'
 'qgis.exe': Loaded 'C:\OSGeo4W\apps\qgis-dev\plugins\grassplugin.dll'
 'qgis.exe': Loaded 'C:\OSGeo4W\apps\qgis-dev\bin\qgisgrass.dll'
 'qgis.exe': Loaded 'C:\OSGeo4W\bin\libgrass_gis.6.4.0svn.dll', Binary was
 not built with debug information.
 'qgis.exe': Loaded 'C:\OSGeo4W\bin\libintl-8.dll', Binary was not built
 with debug information.
 'qgis.exe': Loaded 'C:\OSGeo4W\bin\libiconv-2.dll', Binary was not built
 with debug information.
 'qgis.exe': Loaded 'C:\OSGeo4W\bin\libgrass_datetime.6.4.0svn.dll', Binary
 was not built with debug information.
 'qgis.exe': Loaded 'C:\OSGeo4W\bin\libgrass_vect.6.4.0svn.dll', Binary was
 not built with debug information.
 'qgis.exe': Loaded 'C:\OSGeo4W\bin\libgrass_dbmibase.6.4.0svn.dll', Binary
 was not built with debug information.
 'qgis.exe': Loaded 'C:\OSGeo4W\bin\libgrass_dbmiclient.6.4.0svn.dll',
 Binary was not built with debug information.
 'qgis.exe': Loaded 'C:\OSGeo4W\bin\libgrass_linkm.6.4.0svn.dll', Binary
 was not built with debug information.
 'qgis.exe': Loaded 'C:\OSGeo4W\bin\libgrass_dgl.6.4.0svn.dll', Binary was
 not built with debug information.
 'qgis.exe': Loaded 'C:\OSGeo4W\bin\libgrass_rtree.6.4.0svn.dll', Binary
 was not built with debug information.
 'qgis.exe': Loaded 'C:\OSGeo4W\bin\libgrass_dig2.6.4.0svn.dll', Binary was
 not built with debug information.
 'qgis.exe': Loaded 'C:\OSGeo4W\bin\libgrass_gproj.6.4.0svn.dll', Binary
 was not built with debug information.
 'qgis.exe': Loaded 'C:\OSGeo4W\apps\qgis-dev\plugins\grassprovider.dll'
 'qgis.exe': Loaded 'C:\OSGeo4W\apps\qgis-
 dev\plugins\interpolationplugin.dll'
 'qgis.exe': Loaded 'C:\OSGeo4W\apps\qgis-dev\bin\qgis_analysis.dll'
 'qgis.exe': Loaded 'C:\OSGeo4W\apps\qgis-dev\plugins\labelingplugin.dll'
 'qgis.exe': Loaded 'C:\OSGeo4W\apps\qgis-dev\plugins\memoryprovider.dll'
 'qgis.exe': Loaded 'C:\OSGeo4W\apps\qgis-dev\plugins\northarrowplugin.dll'
 'qgis.exe': Loaded 'C:\OSGeo4W\apps\qgis-
 dev\plugins\ogrconverterplugin.dll'
 'qgis.exe': Loaded 'C:\OSGeo4W\apps\qgis-dev\plugins\ogrprovider.dll'
 'qgis.exe': Loaded 'C:\OSGeo4W\apps\gdal-16\bin\gdalplugins\ogr_GRASS.dll'
 'qgis.exe': Loaded 'C:\OSGeo4W\apps\qgis-dev\plugins\oracleplugin.dll'
 'qgis.exe': Loaded 'C:\OSGeo4W\apps\qgis-dev\plugins\osmprovider.dll'
 'qgis.exe': Loaded 'C:\OSGeo4W\apps\qgis-dev\plugins\postgresprovider.dll'
 'qgis.exe': Loaded 'C:\OSGeo4W\apps\qgis-dev\plugins\quickprintplugin.dll'
 'qgis.exe': Loaded 'C:\OSGeo4W\apps\qgis-
 dev\plugins\rasterterrainplugin.dll'
 'qgis.exe': Loaded 'C:\OSGeo4W\apps\qgis-dev\plugins\scalebarplugin.dll'
 'qgis.exe': Loaded 'C:\OSGeo4W\apps\qgis-
 dev\plugins\spatialiteprovider.dll'
 'qgis.exe': Loaded 'C:\OSGeo4W\apps\qgis-dev\plugins\spitplugin.dll'
 'qgis.exe': Loaded 'C:\OSGeo4W\apps\qgis-dev\plugins\wfsplugin.dll'
 'qgis.exe': Loaded 'C:\OSGeo4W\apps\qgis-dev\plugins\wfsprovider.dll'
 'qgis.exe': Loaded 'C:\OSGeo4W\apps\qgis-dev\plugins\wmsprovider.dll'
 'qgis.exe': Loaded 'C:\OSGeo4W\apps\qgis-dev\bin\qgispython.dll'
 'qgis.exe': Loaded 'C:\OSGeo4W\bin\python25.dll'
 'qgis.exe': Loaded 'C:\OSGeo4W\apps\Python25\Lib\site-packages\sip.pyd',
 Binary was not built with debug information.
 'qgis.exe': Loaded 'C:\OSGeo4W\apps\Python25\Lib\site-
 packages\PyQt4\QtCore.pyd', Binary was not built with debug information.
 'qgis.exe': Loaded 'C:\OSGeo4W\apps\Python25\Lib\site-
 packages\PyQt4\QtGui.pyd', Binary was not built with debug information.
 'qgis.exe': Loaded 'C:\OSGeo4W\apps\qgis-dev\python\qgis\core.pyd', Binary
 was not built with debug information.
 'qgis.exe': Loaded 'C:\OSGeo4W\apps\Python25\Lib\site-
 packages\PyQt4\QtXml.pyd', Binary was not built with debug information.
 'qgis.exe': Loaded 'C:\OSGeo4W\apps\qgis-dev\python\qgis\gui.pyd', Binary
 was not built with debug information.
 'qgis.exe': Loaded 'C:\WINDOWS\system32\rsaenh.dll'
 'qgis.exe': Loaded 'C:\OSGeo4W\apps\Python25\DLLs\_socket.pyd'
 'qgis.exe': Loaded 'C:\OSGeo4W\apps\Python25\DLLs\_ssl.pyd', Binary was
 not built with debug information.
 'qgis.exe': Loaded 'C:\WINDOWS\system32\mswsock.dll'
 'qgis.exe': Loaded 'C:\WINDOWS\system32\dnsapi.dll'
 'qgis.exe': Loaded 'C:\WINDOWS\system32\winrnr.dll'
 'qgis.exe': Loaded 'C:\WINDOWS\system32\wldap32.dll'
 'qgis.exe': Loaded 'C:\OSGeo4W\apps\Python25\Lib\site-
 packages\win32\win32api.pyd'
 'qgis.exe': Loaded 'C:\WINDOWS\system32\version.dll'
 'qgis.exe': Loaded 'C:\OSGeo4W\bin\pywintypes25.dll'
 'qgis.exe': Loaded 'C:\OSGeo4W\apps\Python25\Lib\site-
 packages\PyQt4\QtNetwork.pyd', Binary was not built with debug
 information.
 'qgis.exe': Loaded 'C:\OSGeo4W\apps\Python25\DLLs\_sqlite3.pyd'
 'qgis.exe': Loaded 'C:\OSGeo4W\apps\Python25\DLLs\unicodedata.pyd', Binary
 was not built with debug information.
 'qgis.exe': Loaded 'C:\OSGeo4W\apps\gdal-
 16\bin\gdalplugins\gdal_GRASS.dll'
 'qgis.exe': Loaded 'C:\OSGeo4W\bin\libgrass_I.6.4.0svn.dll', Binary was
 not built with debug information.
 'qgis.exe': Loaded 'C:\WINDOWS\system32\rasadhlp.dll'
 'qgis.exe': Loaded 'C:\WINDOWS\system32\hnetcfg.dll'
 'qgis.exe': Loaded 'C:\WINDOWS\system32\wshtcpip.dll'
 'qgis.exe': Loaded 'C:\WINDOWS\system32\clbcatq.dll'
 'qgis.exe': Loaded 'C:\WINDOWS\system32\comres.dll'
 'qgis.exe': Loaded 'C:\WINDOWS\system32\shdocvw.dll'
 'qgis.exe': Loaded 'C:\WINDOWS\system32\crypt32.dll'
 'qgis.exe': Loaded 'C:\WINDOWS\system32\msasn1.dll'
 'qgis.exe': Loaded 'C:\WINDOWS\system32\cryptui.dll'
 'qgis.exe': Loaded 'C:\WINDOWS\system32\netapi32.dll'
 'qgis.exe': Loaded 'C:\WINDOWS\system32\wininet.dll'
 'qgis.exe': Loaded 'C:\WINDOWS\system32\normaliz.dll'
 'qgis.exe': Loaded 'C:\WINDOWS\system32\urlmon.dll'
 'qgis.exe': Loaded 'C:\WINDOWS\system32\iertutil.dll'
 'qgis.exe': Loaded 'C:\WINDOWS\system32\wintrust.dll'
 'qgis.exe': Loaded 'C:\WINDOWS\system32\imagehlp.dll'
 'qgis.exe': Loaded 'C:\WINDOWS\system32\apphelp.dll'
 'qgis.exe': Loaded 'C:\WINDOWS\system32\AcSignIcon.dll'
 'qgis.exe': Loaded
 'C:\WINDOWS\WinSxS\x86_Microsoft.VC80.MFC_1fc8b3b9a1e18e3b_8.0.50727.
 1833_x-ww_2fd6f5db\mfc80u.dll'
 'qgis.exe': Loaded
 'C:\WINDOWS\WinSxS\x86_Microsoft.VC80.CRT_1fc8b3b9a1e18e3b_8.0.50727.
 3053_x-ww_b80fa8ca\msvcr80.dll'
 'qgis.exe': Loaded
 'C:\WINDOWS\WinSxS\x86_Microsoft.VC80.MFCLOC_1fc8b3b9a1e18e3b_8.0.50727.
 1833_x-ww_85260ed9\mfc80ENU.dll', Binary was not built with debug
 information.
 'qgis.exe': Loaded 'C:\WINDOWS\system32\cscui.dll'
 'qgis.exe': Loaded 'C:\WINDOWS\system32\cscdll.dll'
 'qgis.exe': Loaded 'C:\WINDOWS\system32\browseui.dll'
 'qgis.exe': Loaded 'C:\WINDOWS\system32\setupapi.dll'
 'qgis.exe': Loaded 'C:\WINDOWS\system32\mpr.dll'
 'qgis.exe': Loaded 'C:\WINDOWS\system32\drprov.dll'
 'qgis.exe': Loaded 'C:\WINDOWS\system32\ntlanman.dll'
 'qgis.exe': Loaded 'C:\WINDOWS\system32\netui0.dll'
 'qgis.exe': Loaded 'C:\WINDOWS\system32\netui1.dll'
 'qgis.exe': Loaded 'C:\WINDOWS\system32\netrap.dll'
 'qgis.exe': Loaded 'C:\WINDOWS\system32\samlib.dll'
 'qgis.exe': Loaded 'C:\WINDOWS\system32\davclnt.dll'
 'qgis.exe': Loaded 'C:\WINDOWS\system32\LMIRfsClientNP.dll'
 'qgis.exe': Loaded 'C:\WINDOWS\system32\PortableDeviceApi.dll'
 'qgis.exe': Loaded 'C:\WINDOWS\system32\msgina.dll'
 'qgis.exe': Loaded 'C:\WINDOWS\system32\winsta.dll'
 'qgis.exe': Loaded 'C:\WINDOWS\system32\ieframe.dll'
 'qgis.exe': Loaded 'C:\WINDOWS\system32\linkinfo.dll'
 'qgis.exe': Loaded 'C:\WINDOWS\system32\ntshrui.dll'
 'qgis.exe': Loaded 'C:\WINDOWS\system32\atl.dll'
 'qgis.exe': Loaded 'C:\WINDOWS\system32\sti.dll'
 'qgis.exe': Loaded 'C:\WINDOWS\system32\cfgmgr32.dll'
 'qgis.exe': Loaded 'C:\Program Files\Common Files\Autodesk
 Shared\AcSignCore16.dll'
 'qgis.exe': Loaded
 'C:\WINDOWS\WinSxS\x86_Microsoft.VC80.CRT_1fc8b3b9a1e18e3b_8.0.50727.
 3053_x-ww_b80fa8ca\msvcp80.dll'
 'qgis.exe': Loaded 'C:\WINDOWS\system32\wdmaud.drv'
 'qgis.exe': Loaded 'C:\WINDOWS\system32\msacm32.drv'
 'qgis.exe': Loaded 'C:\WINDOWS\system32\msacm32.dll'
 'qgis.exe': Loaded 'C:\WINDOWS\system32\midimap.dll'
 Unhandled exception at 0x70c16c1d in qgis.exe: 0xC0000005: Access
 violation reading location 0x00000000.
 First-chance exception at 0x70c16c1d in qgis.exe: 0xC0000005: Access
 violation reading location 0x00000000.
 Unhandled exception at 0x70c16c1d in qgis.exe: 0xC0000005: Access
 violation reading location 0x00000000.
 First-chance exception at 0x70c16c1d in qgis.exe: 0xC0000005: Access
 violation reading location 0x00000000.
 Unhandled exception at 0x70c16c1d in qgis.exe: 0xC0000005: Access
 violation reading location 0x00000000.
 }}}


 I've found that the project files appear corrupted for two different
 projects.  I've zipped up one of the folders, and removed the larger files
 so I could upload it.
 Loading two of the rasters makes the current dev version 1.4 crash.  I do
 not know how the files may have been corrupted, or if the updated dev
 version fixed what appeared at first to be a wider scale problem.

 It appears as if the project file itself were some how corrupted. However
 GRASS stand alone still is able to display the raster graphix for
 FillHeight and Trench contained in the zipped file.

-- 
Ticket URL: <https://trac.osgeo.org/qgis/ticket/2144#comment:2>
Quantum GIS <http://qgis.org>
Quantum GIS is an Open Source GIS viewer/editor supporting OGR, PostGIS, and GRASS formats


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