## 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, grdlandmask, grdmask, grdmath, grd2xyz, xyz2grd