NAME

       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-increments, 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 arguments.

       -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

       To obtain all the information about the data set in file hawaii_topo.grd, try

       grdinfo -L1 -L2 -M hawaii_topo.grd

SEE ALSO

       gmt(1gmt), grd2cpt(1gmt), grd2xyz(1gmt), grdedit(1gmt)

                                                   1 Jan 2004                                         GRDINFO(l)