.TH GRDINFO l DATE
.SH NAME
grdinfo \- Get information about the contents of a 2-D grd file
.SH SYNOPSIS
\fBgrdinfo\fP \fIgrdfiles\fP [ \fB\-L1\fP ] [ \fB\-L2\fP ] [ \fB\-M\fP ]
.SH DESCRIPTION
\fBgrdinfo\fP 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.
.TP
\fIgrdfile\fP
The name of one or several 2-D grd files.
.br
.sp
.SH OPTIONS
No space between the option flag and the associated arguments.
.TP
.B \-L1
Report median and L1 scale of z (L1 scale = 1.4826 * Median Absolute Deviation (MAD)).
.TP
.B \-L2
Report mean and standard deviation of z.
.TP
.B \-M
Search for and report the location of min/max z-values, and count and report the number of nodes
set to NaN, if any.
.SH EXAMPLES
To obtain all the information about the data set in file hawaii_topo.grd, try
.br
.sp
grdinfo \fB\-L1 \-L2 \-M\fP hawaii_topo.grd
.SH SEE ALSO
gmt, grd2cpt, grd2xyz, grdedit
#include "refs.i"
