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<HTML>
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<TITLE>grdinfo</TITLE>
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<H1>grdinfo</H1>
<HR>
<PRE>
<!-- Manpage converted by man2html 3.0.1 -->
grdinfo - Get information about the contents of a 2-D grd
file
</PRE>
<H2>SYNOPSIS</H2><PRE>
<B>grdinfo</B> <I>grdfiles</I> [ <B>-C</B> ] [ <B>-D</B> ] [ <B>-F</B> ] [ <B>-L1</B> ] [ <B>-L2</B> ] [ <B>-M</B>
] [ <B>-V</B> ]
</PRE>
<H2>DESCRIPTION</H2><PRE>
<B>grdinfo</B> 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.
<I>grdfile</I>
The name of one or several 2-D grd files.
</PRE>
<H2>OPTIONS</H2><PRE>
No space between the option flag and the associated argu
ments.
<B>-C</B> Formats the report using tab-separated fields on a
single line. The output is <I>w</I> <I>e</I> <I>s</I> <I>n</I> <I>z0</I> <I>z1</I> <I>dx</I> <I>dy</I> <I>nx</I>
<I>ny</I> [ <I>x0</I> <I>y0</I> <I>x1</I> <I>y1</I> ] [ <I>med</I> <I>scale</I> ] [ <I>mean</I> <I>std</I> <I>rms</I>]
[<I>n</I><B>_</B><I>nan</I>]. The data in brackets are output only if
the corresponding options <B>-M,</B> <B>-L1</B>, <B>-L2</B>, and <B>-M</B> <B>are</B>
<B>used,</B> <B>respectively.</B>
<B>-D</B> Report grid domain and x/y-increments using
dd:mm:ss[.fff] notation [Default is decimal]. Does
not apply to the <B>-C</B> option.
<B>-F</B> Report grid domain and x/y-increments world mapping
format [Default is generic]. Does not apply to the
<B>-C</B> option.
<B>-L1</B> Report median and L1 scale of z (L1 scale = 1.4826
* Median Absolute Deviation (MAD)).
<B>-L2</B> Report mean and standard deviation of z.
<B>-M</B> Find and report the location of min/max z-values,
and count and report the number of nodes set to
NaN, if any.
<B>-V</B> Selects verbose mode, which will send progress
reports to stderr [Default runs "silently"].
</PRE>
<H2>EXAMPLES</H2><PRE>
grdinfo <B>-L1</B> <B>-L2</B> <B>-M</B> hawaii_topo.grd
</PRE>
<H2>SEE ALSO</H2><PRE>
<I>gmt</I>(l), <I><A HREF="grd2cpt.html">grd2cpt</A></I>(l), <I><A HREF="grd2xyz.html">grd2xyz</A></I>(l), <I><A HREF="grdedit.html">grdedit</A></I>(l)
</PRE>
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