NAME

       grdclip - Clipping of range in grdfiles.

SYNOPSIS

       grdclip input_file.grd -Goutput_file.grd [ -Sahigh/above ] [ -Sblow/below ] [ -V ]

DESCRIPTION

       grdclip will set values < low to below and/or values > high to above. Useful when you want
       all of a continent or an ocean to fall into one color or grayshade in image processing, or
       clipping  of  the  range  of data values is required. above/below can be any number or NaN
       (Not a Number).  You must choose at least one of -Sa or -Sb.

       input_file.grd
              The input 2-D binary grdfile.

       -G     output_file.grd is the modified output grdfile.

OPTIONS

       -Sa    Set all data[i] > high to above.

       -Sb    Set all data[i] < low to below.

       -V     Selects verbose mode, which will send progress  reports  to  stderr  [Default  runs
              "silently"].

EXAMPLES

       To set all values > 70 to NaN and all values < 0 to 0 in file data.grd, try:

       grdclip data.grd -Gnew_data.grd -Sa70/NaN -Sb0/0 -V

SEE ALSO

       gmt(1gmt), grdlandmask(1gmt), grdmask(1gmt), grdmath(1gmt), grd2xyz(1gmt), xyz2grd(1gmt)

                                            1 Aug 1993                                 GRDCLIP(l)