Hi, If you read https://gdal.org/programs/gdal_merge.html carefully you'll notice that -n is used for telling what nodata value is used in the source files and it is only needed if GDAL can't recognize it automatically. Try -a_nodata -32767 instead "Assign a specified nodata value to output bands."
-Jukka Rahkonen- Gong, Shawn-2 wrote > Hi list, > > I use gdal_merge to mosaic a set of DTED 1 and 2 chips. > DTED contains -32767 as nodata. But after merging, -32767 are reset as 0. > I tried to use "-n -32767" but getting the same result. > > Is there a way to keep the -32767 values? > > Thanks, > Shawn -- Sent from: http://osgeo-org.1560.x6.nabble.com/GDAL-Dev-f3742093.html _______________________________________________ gdal-dev mailing list [email protected] https://lists.osgeo.org/mailman/listinfo/gdal-dev
