Re: [Qgis-user] Building image pyramids - qgis crashing
Paolo Cavallini pisze: I confirm the crash. Paolo What GDAL version are you using? Maciek ___ Qgis-user mailing list Qgis-user@lists.qgis.org http://lists.qgis.org/cgi-bin/mailman/listinfo/qgis-user
Re: [Qgis-user] Building image pyramids - qgis crashing
Oleg Gusev ha scritto: Am Samstag 08 März 2008 19:39:38 schrieb Maciej Sieczka: I'm attaching a smallish one for you to try if it crashes your QGIS. This file is probably too small to cause any problems, but i routinely get segfaults with bigger .tiff files. I confirm the crash. The resulting raster is quite reddish (?). Better move this discussion to the trac, IMHO. pc -- Paolo Cavallini, see: http://www.faunalia.it/pc Io voto per il software libero: http://elezioni.softwarelibero.it/info/iniziativa Noi ci troviamo con parecchie difficoltà con NGI http://www.ngi.it/ ___ Qgis-user mailing list Qgis-user@lists.qgis.org http://lists.qgis.org/cgi-bin/mailman/listinfo/qgis-user
Re: [Qgis-user] Building image pyramids - qgis crashing
Oleg Gusev pisze: Am Samstag 08 März 2008 19:39:38 schrieb Maciej Sieczka: I'm attaching a smallish one for you to try if it crashes your QGIS. This file is probably too small to cause any problems, but i routinely get segfaults with bigger .tiff files. OK. Can you put one online and link it in the bug report [1]? [1]https://trac.osgeo.org/qgis/ticket/605 Maciek ___ Qgis-user mailing list Qgis-user@lists.qgis.org http://lists.qgis.org/cgi-bin/mailman/listinfo/qgis-user
Re: [Qgis-user] Building image pyramids - qgis crashing
Am Samstag 08 März 2008 18:20:34 schrieb Maciej Sieczka: In Trac [1] Frank says the bug is fixed in GDAL 1.4.4 with internal libtiff, or libtiff 3.9 (from CVS). I confirm. Checked in QGIS trunk r8190, built against GDAL 1.5.0+SVN 2008-03-04 (internal libtiff). No crashes building overviews in QGIS whatsoever. Hi Maciek, please try to build the overviews for a tiled compressed 3 band geotiff (gdal_translate -co compress=deflate -co tiled=yes) It segfaults for most images i've tried using gdal-1.5.0 Oleg. ___ Qgis-user mailing list Qgis-user@lists.qgis.org http://lists.qgis.org/cgi-bin/mailman/listinfo/qgis-user
Re: [Qgis-user] Building image pyramids - qgis crashing
Am Samstag 08 März 2008 19:39:38 schrieb Maciej Sieczka: I'm attaching a smallish one for you to try if it crashes your QGIS. This file is probably too small to cause any problems, but i routinely get segfaults with bigger .tiff files. Oleg. --- $ gdalinfo --version GDAL 1.5.0, released 2007/12/18 $ gdalinfo FOO.tif Driver: GTiff/GeoTIFF Files: FOO.tif Size is 8183, 5613 ... Band 1 Block=8183x1 Type=Byte, ColorInterp=Red NoData Value=255 Band 2 Block=8183x1 Type=Byte, ColorInterp=Green NoData Value=255 Band 3 Block=8183x1 Type=Byte, ColorInterp=Blue NoData Value=255 $ gdaladdo FOO.tif 2 4 8 16 32 0...10...20.Warning 1: TIFFReadDirectory:FOO.tif: Wrong StripByteCounts field, ignoring and calculating from imagelength ERROR 1: FOO.tif:DumpModeDecode: Not enough data for scanline 256 ERROR 1: TIFFReadEncodedTile() failed. ... ERROR 1: TIFFReadEncodedTile() failed. ERROR 1: IReadBlock failed at X offset 8, Y offset 19 ERROR 1: GetBlockRef failed at X block offset 8, Y block offset 19 ERROR 1: FOO.tif:DumpModeDecode: Not enough data for scanline 1152 ... Segmentation fault ___ Qgis-user mailing list Qgis-user@lists.qgis.org http://lists.qgis.org/cgi-bin/mailman/listinfo/qgis-user
Re: [Qgis-user] Building image pyramids - qgis crashing
Mikhail Umorin pisze: It's a longstanding gdal bug for updating compressed .tiff tiles. The only known workaround is to disable compression. In Trac [1] Frank says the bug is fixed in GDAL 1.4.4 with internal libtiff, or libtiff 3.9 (from CVS). I confirm. Checked in QGIS trunk r8190, built against GDAL 1.5.0+SVN 2008-03-04 (internal libtiff). No crashes building overviews in QGIS whatsoever. Checked with several Byte and Uint16 GeoTIFFs, all having colortables, compressed with lzw, deflate or packbits. Maciek [1]https://trac.osgeo.org/qgis/ticket/605 ___ Qgis-user mailing list Qgis-user@lists.qgis.org http://lists.qgis.org/cgi-bin/mailman/listinfo/qgis-user
Re: [Qgis-user] Building image pyramids - qgis crashing
Oleg Gusev pisze: Am Samstag 08 März 2008 18:20:34 schrieb Maciej Sieczka: In Trac [1] Frank says the bug is fixed in GDAL 1.4.4 with internal libtiff, or libtiff 3.9 (from CVS). I confirm. Checked in QGIS trunk r8190, built against GDAL 1.5.0+SVN 2008-03-04 (internal libtiff). No crashes building overviews in QGIS whatsoever. please try to build the overviews for a tiled compressed 3 band geotiff (gdal_translate -co compress=deflate -co tiled=yes) It segfaults for most images i've tried using gdal-1.5.0 It does not crash for me even with 3 band, deflated, tiled tiff. I'm attaching a smallish one for you to try if it crashes your QGIS. Maciek inline: slope_rgb_dfl_tls.tif___ Qgis-user mailing list Qgis-user@lists.qgis.org http://lists.qgis.org/cgi-bin/mailman/listinfo/qgis-user
Re: [Qgis-user] Building image pyramids - qgis crashing
Oleg Gusev pisze: Am Samstag 16 Februar 2008 00:57:28 schrieb Mikhail Umorin: ERROR 1: TIFFReadEncodedTile() failed. ... What is the problem and/or how can I track it down? It's a longstanding gdal bug for updating compressed .tiff tiles. The only known workaround is to disable compression. A way to avoid such problems in future would be to modify QGIS not to build internal overviews (at least as an option). It could build external overviews instead, in .aux files. The benefits of external overviews: 1. The input raster doesn't need to be uncompressed. 2. The input data are not modified. 3. Input data remain compatible with software that don't tolerate internal overviews. 4. Ergo - no need to duplicate data for safety/usability reasons before building overviews. 5. Other software support external overviews that GDAL creates - eg. ArcGIS, ERDAS Imagine. What do developers think about it? Should I make an enhacement request? Maciek P.S. For now, to create a external overwiev from CLI use eg.: gdaladdo --config USE_RRD YES some.tif 2 4 8 16 ___ Qgis-user mailing list Qgis-user@lists.qgis.org http://lists.qgis.org/cgi-bin/mailman/listinfo/qgis-user
Re: [Qgis-user] Building image pyramids - qgis crashing
Am Sonntag 17 Februar 2008 01:56:55 schrieb Mikhail Umorin: It's a longstanding gdal bug for updating compressed .tiff tiles. The only known workaround is to disable compression. How do I do that? I'm usually using gdaladdo to create overviews, but gdaladdo also has its own share of problems. The tile size is hardcoded at 128x128 pixels, and sometimes it segfaults on non-8bit paletted geotiffs. So this is more like a trial-and-error solution. Oleg. ___ Qgis-user mailing list Qgis-user@lists.qgis.org http://lists.qgis.org/cgi-bin/mailman/listinfo/qgis-user
Re: [Qgis-user] Building image pyramids - qgis crashing
Spasibo za otvet (Thank you for the answer) It's a longstanding gdal bug for updating compressed .tiff tiles. The only known workaround is to disable compression. How do I do that? M. ___ Qgis-user mailing list Qgis-user@lists.qgis.org http://lists.qgis.org/cgi-bin/mailman/listinfo/qgis-user
Re: [Qgis-user] Building image pyramids - qgis crashing
Am Samstag 16 Februar 2008 00:57:28 schrieb Mikhail Umorin: ERROR 1: TIFFReadEncodedTile() failed. ... What is the problem and/or how can I track it down? It's a longstanding gdal bug for updating compressed .tiff tiles. The only known workaround is to disable compression. Oleg. ___ Qgis-user mailing list Qgis-user@lists.qgis.org http://lists.qgis.org/cgi-bin/mailman/listinfo/qgis-user
