You might try building a vrt file first and then converting that. gdalbuildvrt merge.vrt *.tif
-or just merge the original IMGs- gdalbuildvrt merge.vrt *.img -then- gdal_translate <your options> merge.vrt output.tif > Message: 4 > Date: Fri, 7 Oct 2011 11:42:52 -0400 > From: "Jay L." <jzl5...@psu.edu> > Subject: [gdal-dev] Fwd: gdal_merge.py - Missing images - sans > attachment > To: gdal-dev@lists.osgeo.org > Message-ID: > <ca+bfmpsvpqkpsdowvuvng8vr9okkphbrakvzncq3frbbugj...@mail.gmail.com> > Content-Type: text/plain; charset="iso-8859-1" > > Sent with an example attachment, which is awaiting approval. Here is the > mail without attachement. > > > I have 8 large Gtiffs which I am trying to mosaic. Tiffs were created from > .IMG files downloaded from PDS. I converted to tif using: > > gdal_translate -of GTiff -scale -co "TILED=YES" -co "COMPRESS=JPEG" > <input> > > The format conversion is working without a problem. Gdalinfo is reporting > the correct NDV and projection information. Viewing each tif also returns > the expected raster iamge. So far, so good. > > > I then use: > > gdal_merge.py -o wacmos.tif -of GTiff -v --optfile tiff_list.txt > > > Six of the eight tiles are added to the mosaic correctly. Varying the order > in the list, or using *.tif does not change the output. It is always the > same two images which are missing. Watching the verbose output, it looks > like the images are mosaicing correctly. What would cause these images to > be merged as totally black tiles? > > > Thanks for any insight, > Jay _______________________________________________ gdal-dev mailing list gdal-dev@lists.osgeo.org http://lists.osgeo.org/mailman/listinfo/gdal-dev
