Michael, Can you provide screenshots of diablo-combined-center-utm10-70pct-box.tif and diablo-combined-center-utm10-70pct-cutout.tif for comparison?
By the way, you can perform the actions of the two gdal_translate commands in the first step with the gdal_merge.py script itself unless you want to use a specific resampling algorithm. On Thu, Jul 7, 2011 at 4:28 AM, Michael Corey <mco...@cironline.org> wrote: > Hi all: > > I'm using a shapefile as a clipping mask to cut out the shoreline from some > DOQ files that I have merged together. But when I do the clipping step, I > end up with unwanted semitransparency in the non-clipped areas. > > I'm pretty sure the problem is only with my gdalwarp step at the end. > > Here's my process: > > gdal_merge.py -init "255" -o diablo-combined-center-utm10.**tif file file > file file > > gdal_translate -outsize 70% 70% diablo-combined-center-utm10.**tif > diablo-combined-center-utm10-**70pct.tif > > ogrinfo -al ./diablo_canyon_detail_**clipper.shp > //Extent: (XXXX, YYYY) - (XXXX, YYYY) > > gdal_translate -projwin XXXX YYYY XXXX YYYY diablo-combined-center-utm10-* > *70pct.tif diablo-combined-center-utm10-**70pct-box.tif > > gdalwarp -co COMPRESS=DEFLATE -cutline ./diablo_canyon_detail_**clipper.shp > diablo-combined-center-utm10-**70pct-box.tif diablo-combined-center-utm10- > **70pct-cutout.tif > > Can anyone help? > > Thanks! > > -- > Michael Corey > > ______________________________**_________________ > gdal-dev mailing list > gdal-dev@lists.osgeo.org > http://lists.osgeo.org/**mailman/listinfo/gdal-dev<http://lists.osgeo.org/mailman/listinfo/gdal-dev> > -- Best regards, Chaitanya kumar CH. /tʃaɪθənjə/ /kʊmɑr/ +91-9494447584 17.2416N 80.1426E
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