Hi, I am trying to tile and create overviews for a TIFF image dataset I have, but I keep getting strange errors when attempting to add overviews.
1st I created a copy of the original image (same format and all, but wanted to keep the original around in case I had problems). >gdal_translate -ot Float32 -of GTiff Av.MaxNDVI.2000.2009.Week.19.tif trans/week19.tif >cd trans Then I tiled the image (I guess I could have done this in one step by adding -co "TILED=YES" to the previous step): >gdal_translate -ot Float32 -of GTiff -co "TILED=YES" week19.tif week19_tiled.tif Then I tried to add the overviews: > gdaladdo -r average -ro week19_tiled.tif 2 4 8 16 I get the following (I've added some whitespace for clarity): 0...10...20...30...40...50...60...70... Warning 1: TIFFReadDirectory:week19_tiled.tif.ovr: Wrong "StripByteCounts" field, ignoring and calculating from imagelength Warning 1: TIFFReadDirectory:week19_tiled.tif.ovr: Wrong "StripByteCounts" field, ignoring and calculating from imagelength ERROR 1: week19_tiled.tif.ovr:DumpModeDecode: Not enough data for scanline 0 ERROR 1: TIFFReadEncodedTile() failed. ERROR 1: IReadBlock failed at X offset 0, Y offset 3 ERROR 1: GetBlockRef failed at X block offset 0, Y block offset 3 I get effectively the same error when I run this without the -ro option. Any idea's what is going wrong. Regards, Craig Dillabaugh _______________________________________________ gdal-dev mailing list [email protected] http://lists.osgeo.org/mailman/listinfo/gdal-dev
