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 [email protected] http://lists.qgis.org/cgi-bin/mailman/listinfo/qgis-user
