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<p>
Previous: <a href="Command-Syntax-and-Function-Syntax.html" accesskey="p" rel="prev">Command Syntax and Function Syntax</a>, Up: <a href="Functions-and-Scripts.html" accesskey="u" rel="up">Functions and Scripts</a> [<a href="index.html#SEC_Contents" title="Table of contents" rel="contents">Contents</a>][<a href="Concept-Index.html" title="Index" rel="index">Index</a>]</p>
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<hr>
<h3 class="section" id="Organization-of-Functions-Distributed-with-Octave"><span>11.14 Organization of Functions Distributed with Octave<a class="copiable-link" href="#Organization-of-Functions-Distributed-with-Octave"> ¶</a></span></h3>
<p>Many of Octave’s standard functions are distributed as function files.
They are loosely organized by topic, in subdirectories of
<samp class="file"><var class="var">octave-home</var>/share/octave/<var class="var">version</var>/m</samp>, to make it easier
to find them.
</p>
<p>The following is a list of all the function file subdirectories, and the
types of functions you will find there.
</p>
<dl class="table">
<dt><samp class="file">@ftp</samp></dt>
<dd><p>Class functions for the FTP object.
</p>
</dd>
<dt><samp class="file">+containers</samp></dt>
<dd><p>Package for the containers classes.
</p>
</dd>
<dt><samp class="file">audio</samp></dt>
<dd><p>Functions for playing and recording sounds.
</p>
</dd>
<dt><samp class="file">deprecated</samp></dt>
<dd><p>Out-of-date functions which will eventually be removed from Octave.
</p>
</dd>
<dt><samp class="file">elfun</samp></dt>
<dd><p>Elementary functions, principally trigonometric.
</p>
</dd>
<dt><samp class="file">general</samp></dt>
<dd><p>Miscellaneous matrix manipulations, like <code class="code">flipud</code>, <code class="code">rot90</code>,
and <code class="code">triu</code>, as well as other basic functions, like
<code class="code">ismatrix</code>, <code class="code">narginchk</code>, etc.
</p>
</dd>
<dt><samp class="file">geometry</samp></dt>
<dd><p>Functions related to Delaunay triangulation.
</p>
</dd>
<dt><samp class="file">gui</samp></dt>
<dd><p>Functions for GUI elements like dialog, message box, etc.
</p>
</dd>
<dt><samp class="file">help</samp></dt>
<dd><p>Functions for Octave’s built-in help system.
</p>
</dd>
<dt><samp class="file">image</samp></dt>
<dd><p>Image processing tools. These functions require the X Window System.
</p>
</dd>
<dt><samp class="file">io</samp></dt>
<dd><p>Input-output functions.
</p>
</dd>
<dt><samp class="file">java</samp></dt>
<dd><p>Functions related to the Java integration.
</p>
</dd>
<dt><samp class="file">linear-algebra</samp></dt>
<dd><p>Functions for linear algebra.
</p>
</dd>
<dt><samp class="file">miscellaneous</samp></dt>
<dd><p>Functions that don’t really belong anywhere else.
</p>
</dd>
<dt><samp class="file">ode</samp></dt>
<dd><p>Functions to solve ordinary differential equations (ODEs).
</p>
</dd>
<dt><samp class="file">optimization</samp></dt>
<dd><p>Functions related to minimization, optimization, and root finding.
</p>
</dd>
<dt><samp class="file">path</samp></dt>
<dd><p>Functions to manage the directory path Octave uses to find functions.
</p>
</dd>
<dt><samp class="file">pkg</samp></dt>
<dd><p>Package manager for installing external packages of functions in Octave.
</p>
</dd>
<dt><samp class="file">plot</samp></dt>
<dd><p>Functions for displaying and printing two- and three-dimensional graphs.
</p>
</dd>
<dt><samp class="file">polynomial</samp></dt>
<dd><p>Functions for manipulating polynomials.
</p>
</dd>
<dt><samp class="file">prefs</samp></dt>
<dd><p>Functions implementing user-defined preferences.
</p>
</dd>
<dt><samp class="file">set</samp></dt>
<dd><p>Functions for creating and manipulating sets of unique values.
</p>
</dd>
<dt><samp class="file">signal</samp></dt>
<dd><p>Functions for signal processing applications.
</p>
</dd>
<dt><samp class="file">sparse</samp></dt>
<dd><p>Functions for handling sparse matrices.
</p>
</dd>
<dt><samp class="file">specfun</samp></dt>
<dd><p>Special functions such as <code class="code">bessel</code> or <code class="code">factor</code>.
</p>
</dd>
<dt><samp class="file">special-matrix</samp></dt>
<dd><p>Functions that create special matrix forms such as Hilbert or
Vandermonde matrices.
</p>
</dd>
<dt><samp class="file">startup</samp></dt>
<dd><p>Octave’s system-wide startup file.
</p>
</dd>
<dt><samp class="file">statistics</samp></dt>
<dd><p>Statistical functions.
</p>
</dd>
<dt><samp class="file">strings</samp></dt>
<dd><p>Miscellaneous string-handling functions.
</p>
</dd>
<dt><samp class="file">testfun</samp></dt>
<dd><p>Functions for performing unit tests on other functions.
</p>
</dd>
<dt><samp class="file">time</samp></dt>
<dd><p>Functions related to time and date processing.
</p></dd>
</dl>
</div>
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