grdclip

       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 pro­
       cessing,  or  clipping  of  the  range  of  data values is
       required. above/below can be any number or NaN (Not a Num­
       ber).  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(l),     grdlandmask(l),     grdmask(l),    grdmath(l),
       grd2xyz(l), xyz2grd(l)