## 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