I want to speed up layer rendering so I want to build image pyramids. I use DOQ files, convert them to GeoTiff using mrsidecode and import those raster tiffs as layers. When I try to build the pyramids from layer properties 50 % of the time I qgis crashes:
<numerous error messages of different kind> ERROR 1: TIFFReadEncodedTile() failed. ERROR 1: /home/mike/GIS/Dallas/DOQ-NAIP/d329602_3.tif:DumpModeDecode: Not enough data for scanline 1152 ERROR 1: TIFFReadEncodedTile() failed. ERROR 1: /home/mike/GIS/Dallas/DOQ-NAIP/d329602_3.tif:DumpModeDecode: Not enough data for scanline 1280 ERROR 1: TIFFReadEncodedTile() failed. ERROR 1: /home/mike/GIS/Dallas/DOQ-NAIP/d329602_3.tif:DumpModeDecode: Not enough data for scanline 1408 ERROR 1: TIFFReadEncodedTile() failed. ERROR 1: /home/mike/GIS/Dallas/DOQ-NAIP/d329602_3.tif:DumpModeDecode: Not enough data for scanline 1536 ERROR 1: TIFFReadEncodedTile() failed. Warning 1: TIFFReadDirectory:/home/mike/GIS/Dallas/DOQ-NAIP/d329602_3.tif: Wrong "StripByteCounts" field, ignoring and calculating from imagelength Segmentation fault The <numerous error messages of different kinds> also come up when qgis does *not* crush when building pyramids, but sooner or later I get segfault with seemingly no difference in preceeding <numerous error messages of different kinds> What is the problem and/or how can I track it down? Mikhail. P.S. QGis compiled from 0.9.1 source w/ gcc 4.2.2 on AMD Opteron Linux kernel 2.6.22.18-server-1mdv #1 SMP, same problem also exists in Intel Xeon dual core same Linux _______________________________________________ Qgis-user mailing list [email protected] http://lists.qgis.org/cgi-bin/mailman/listinfo/qgis-user
