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<h4 class="subsection" id="Sparse-Matrices-in-Oct_002dFiles-1"><span>A.1.6 Sparse Matrices in Oct-Files<a class="copiable-link" href="#Sparse-Matrices-in-Oct_002dFiles-1"> ¶</a></span></h4>
<p>There are three classes of sparse objects that are of interest to the user.
</p>
<dl class="table">
<dt><code class="code">SparseMatrix</code></dt>
<dd><p>A double precision sparse matrix class
</p>
</dd>
<dt><code class="code">SparseComplexMatrix</code></dt>
<dd><p>A complex sparse matrix class
</p>
</dd>
<dt><code class="code">SparseBoolMatrix</code></dt>
<dd><p>A boolean sparse matrix class
</p></dd>
</dl>
<p>All of these classes inherit from the <code class="code">Sparse<T></code> template class, and so
all have similar capabilities and usage. The <code class="code">Sparse<T></code> class was based
on Octave’s <code class="code">Array<T></code> class and users familiar with Octave’s
<code class="code">Array</code> classes will be comfortable with the use of the sparse classes.
</p>
<p>The sparse classes will not be entirely described in this section, due to their
similarity with the existing <code class="code">Array</code> classes. However, there are a few
differences due the nature of sparse objects, and these will be described.
First, although it is fundamentally possible to have N-dimensional sparse
objects, the Octave sparse classes do not allow them at this time; All
instances of the sparse classes <strong class="strong">must</strong> be 2-dimensional. This means
that <code class="code">SparseMatrix</code> is actually more similar to Octave’s <code class="code">Matrix</code>
class than it is to the <code class="code">NDArray</code> class.
</p>
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<li><a href="Array-and-Sparse-Class-Differences.html" accesskey="1">Array and Sparse Class Differences</a></li>
<li><a href="Creating-Sparse-Matrices-in-Oct_002dFiles.html" accesskey="2">Creating Sparse Matrices in Oct-Files</a></li>
<li><a href="Using-Sparse-Matrices-in-Oct_002dFiles.html" accesskey="3">Using Sparse Matrices in Oct-Files</a></li>
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