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<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE refentry PUBLIC "-//OASIS//DTD DocBook XML V4.4//EN" "http://www.oasis-open.org/docbook/xml/4.4/docbookx.dtd">
<refentry id='hdiff'>
<refmeta>
<refentrytitle>hdiff</refentrytitle>
<manvolnum>1</manvolnum>
</refmeta>
<refnamediv>
<refname>hdiff</refname>
<refpurpose>compares two HDF files and reports the differences</refpurpose>
</refnamediv>
<refsynopsisdiv id='synopsis'>
<cmdsynopsis>
<command>hdiff</command>
<arg choice='opt'><option>-V</option></arg>
<arg choice='opt'><option>-b</option></arg>
<arg choice='opt'><option>-g</option></arg>
<arg choice='opt'><option>-s</option></arg>
<arg choice='opt'><option>-d</option></arg>
<arg choice='opt'><option>-D</option></arg>
<arg choice='opt'><option>-S</option></arg>
<arg choice='opt'><option>-v</option> <replaceable>var1[,...]</replaceable></arg>
<arg choice='opt'><option>-u</option> <replaceable>var1[,...]</replaceable></arg>
<arg choice='opt'><option>-e</option> <replaceable>count</replaceable></arg>
<arg choice='opt'><option>-t</option> <replaceable>limit</replaceable></arg>
<arg choice='opt'><option>-p</option> <replaceable>relative</replaceable></arg>
<arg choice='plain'><filename>file1</filename></arg>
<arg choice='plain'><filename>file2</filename></arg>
</cmdsynopsis>
</refsynopsisdiv>
<refsect1 id='description'>
<title>DESCRIPTION</title>
<para>
<command>hdiff</command> compares two HDF files and reports the
differences.
</para>
</refsect1>
<refsect1 id='options'>
<title>OPTIONS</title>
<variablelist>
<varlistentry>
<term><option>-V</option></term>
<listitem>
<para>
Display version of the HDF4 library and exit
</para>
</listitem>
</varlistentry>
<varlistentry>
<term><option>-b</option></term>
<listitem>
<para>
Verbose mode
</para>
</listitem>
</varlistentry>
<varlistentry>
<term><option>-g</option></term>
<listitem>
<para>
Compare global attributes only
</para>
</listitem>
</varlistentry>
<varlistentry>
<term><option>-s</option></term>
<listitem>
<para>
Compare SD local attributes only
</para>
</listitem>
</varlistentry>
<varlistentry>
<term><option>-d</option></term>
<listitem>
<para>
Compare SD data only
</para>
</listitem>
</varlistentry>
<varlistentry>
<term><option>-D</option></term>
<listitem>
<para>
Compare Vdata data only
</para>
</listitem>
</varlistentry>
<varlistentry>
<term><option>-S</option></term>
<listitem>
<para>
Print statistics
</para>
</listitem>
</varlistentry>
<varlistentry>
<term><option>-v</option> <replaceable>var1[,...]</replaceable></term>
<listitem>
<para>
Compare SD data on variable(s) <replaceable>var1</replaceable>,...
only
</para>
</listitem>
</varlistentry>
<varlistentry>
<term><option>-u</option> <replaceable>var1[,...]</replaceable></term>
<listitem>
<para>
Compare vdata on variable(s) <replaceable>var1</replaceable>,... only
</para>
</listitem>
</varlistentry>
<varlistentry>
<term><option>-e</option> <replaceable>count</replaceable></term>
<listitem>
<para>
Print difference up to count number for each variable
</para>
</listitem>
</varlistentry>
<varlistentry>
<term><option>-t</option> <replaceable>limit</replaceable></term>
<listitem>
<para>
Print difference when it is greater than limit
</para>
</listitem>
</varlistentry>
<varlistentry>
<term><option>-p</option> <replaceable>relative</replaceable></term>
<listitem>
<para>
Print difference when it is greater than a relative limit
</para>
</listitem>
</varlistentry>
<varlistentry>
<term><filename>file1</filename></term>
<listitem>
<para>
File name of the first HDF file
</para>
</listitem>
</varlistentry>
<varlistentry>
<term><filename>file2</filename></term>
<listitem>
<para>
File name of the second HDF file
</para>
</listitem>
</varlistentry>
</variablelist>
<para>
The '<replaceable>count</replaceable>' value must be a positive integer
</para>
<para>
The '<replaceable>limit</replaceable>'
and '<replaceable>relative</replaceable>'
values must be positive numbers
</para>
<para>
The <option>-t</option> compare criteria is |a - b| > limit
</para>
<para>
The <option>-p</option> compare criteria is |(b-a)/a| > relative
</para>
<para>
Return codes: 0 (no differences found), 1 (differences found)
</para>
</refsect1>
</refentry>
|
