grdinfo

       grdinfo  - Get information about the contents of a 2-D grd
       file

SYNOPSIS

       grdinfo grdfiles [ -C ] [ -D ] [ -F ] [ -L1 ] [ -L2 ] [ -M
       ] [ -V ]

DESCRIPTION

       grdinfo  reads  a  2-D binary grd file and reports various
       statistics for the (x,y,z) data in the grdfile. The output
       information  contains the minimum/maximum values for x, y,
       and z, where the min/max of z occur, the x-  and  y-incre­
       ments,  and  the number of x and y nodes, and [optionally]
       the mean, standard deviation, and/or the median, L1  scale
       of z, and number of nodes set to NaN.

       grdfile
              The name of one or several 2-D grd files.

OPTIONS

       No  space between the option flag and the associated argu­
       ments.

       -C     Formats the report using tab-separated fields on  a
              single  line.  The output is w e s n z0 z1 dx dy nx
              ny [ x0 y0 x1 y1 ] [ med scale ] [  mean  std  rms]
              [n_nan].   The  data in brackets are output only if
              the corresponding options -M, -L1, -L2, and -M  are
              used, respectively.

       -D     Report   grid   domain   and  x/y-increments  using
              dd:mm:ss[.fff] notation [Default is decimal].  Does
              not apply to the -C option.

       -F     Report grid domain and x/y-increments world mapping
              format [Default is generic].  Does not apply to the
              -C option.

       -L1    Report  median and L1 scale of z (L1 scale = 1.4826
              * Median Absolute Deviation (MAD)).

       -L2    Report mean and standard deviation of z.

       -M     Find and report the location of  min/max  z-values,
              and  count  and  report  the number of nodes set to
              NaN, if any.

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

EXAMPLES

       grdinfo -L1 -L2 -M hawaii_topo.grd

SEE ALSO

       gmt(l), grd2cpt(l), grd2xyz(l), grdedit(l)