NAME

       grdcut - Extract a subregion out of a .grd file

SYNOPSIS

       grdcut input_file.grd -Goutput_file.grd -Rwest/east/south/north[r] [ -V ]

DESCRIPTION

       grdcut  will produce a new output_file.grd file which is a subregion of input_file.grd.  The subregion is
       specified with -Rwest/east/south/north as in other programs; the specified  range  must  not  exceed  the
       range  of  input_file.grd.  If  in  doubt,  run  grdinfo to check range. Complementary to grdcut there is
       grdpaste, which will join together two grdfiles along a common edge.

       input_file.grd
              this is the input .grd format file.

       -Goutput_file.grd
              this is the output .grd format file.

       -R     west, east, south, and north specify the Region of interest. To specify boundaries in degrees  and
              minutes  [and  seconds],  use  the  dd:mm[:ss]  format. Append r if lower left and upper right map
              coordinates are given instead of wesn.  This defines the subregion to be cut out.

OPTIONS

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

EXAMPLES

       Suppose you have used surface to grid ship gravity in the region between 148E - 162E and 8N  -  32N,  and
       you  do  not trust the gridding near the edges, so you want to keep only the area between 150E - 160E and
       10N - 30N, then:

       grdcut grav_148_162_8_32.grd -Ggrav_150_160_10_30.grd -R150/160/10/30 -V

SEE ALSO

       grdpaste(1gmt), grdinfo(1gmt), gmt(1gmt)

                                                   1 Jan 2004                                          GRDCUT(l)