Re: [gdal-dev] GeoTIFF with LZW compression Overviews error

2013-02-14 Thread Fabian Schindler
Frank, I'm assuming you mean gdaladdo is run on y.tif, the output of gdalwarp, right? Yes, sorry, that's what I meant. I tried the steps with a manufactured input file of the same size and did not encounter the problem on my system. The most likely important difference is that I am not using

[gdal-dev] GeoTIFF with LZW compression Overviews error

2013-02-13 Thread Fabian Schindler
Dear devs, I'm experiencing strange errors when I try to add overviews to specific GeoTIFF files with internal tiling and LZW compression. This error shows only on some (about 3-5%) of the input files. This is how I process the file: $gdal_translate -gcp 0 0 19.09 49.22 -gcp 100 0 20.1

Re: [gdal-dev] GeoTIFF with LZW compression Overviews error

2013-02-13 Thread Frank Warmerdam
Fabian, I'm assuming you mean gdaladdo is run on y.tif, the output of gdalwarp, right? I tried the steps with a manufactured input file of the same size and did not encounter the problem on my system. The most likely important difference is that I am not using libtiff 3.9.4 - I'm using libtiff