>From the gdal_translate line, the images are identical, but with added information to the tif, in a geotif style.
Once I warp it, the image is squished (as I would expect), but the width is the same. I have also tried embedding all of the geotiff data within the intermediate image, but for some reason, I just cannot seem to set the pixel size. If I create a wld or a tfw file, it just seems to ignore it. gdal_translate -of gtiff -CO TFW=YES -a_ullr -115 56 -105 54 -a_srs "+proj=lcc +lat_0=56 +lon_0=-115 +lat_2=49.33 +lat_1=54.66 +x_0=0 +y_0=0 +datum=NAD27" n.tif nn.tif I am wondering if perhaps its because photoshop added a bunch of incorrect meta data: Metadata: AREA_OR_POINT=Area TIFFTAG_SOFTWARE=Adobe Photoshop CS3 Macintosh TIFFTAG_DATETIME=2009:02:21 16:15:49 TIFFTAG_XRESOLUTION=72 TIFFTAG_YRESOLUTION=72 TIFFTAG_RESOLUTIONUNIT=2 (pixels/inch) To my eyes, that looks like 72pixels per inch, which is about right for the scanner it came in from, but wrong for the actual map scale. I cannot find a way in photoshop to change that, and it definitely doesn't like scaling to sizes below 1.0 On Sat, Feb 21, 2009 at 8:45 PM, Wendy Fay Stevenson <steve...@erau.edu> wrote: > Hi > > Have you not got a world file for your image? > I would agree that the pixel size does not seem right. I > would try writing my own world file with reasonable values - > just to see if the image come out looking better. Make sure > you call it the same name as your original tiff file (with > .wld or .twf extention) and gdal will automatically pick it > up. > > What results do you get if you run gdalinfo on the new file? > Does it have more or less the same number of pixels? > > I know you can set the resolution with gdalwarp but I haven't > tried that. > > About the false eastings and northings, it would very much > depend on the projection of the original image. If they do > not specify I would assume they are 0. > > Wendy > _______________________________________________ gdal-dev mailing list gdal-dev@lists.osgeo.org http://lists.osgeo.org/mailman/listinfo/gdal-dev