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<title>GNU Octave: Processing Data in Cell Arrays</title>
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<a name="Processing-Data-in-Cell-Arrays"></a>
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<p>
Previous: <a href="Cell-Arrays-of-Strings.html#Cell-Arrays-of-Strings" accesskey="p" rel="prev">Cell Arrays of Strings</a>, Up: <a href="Cell-Arrays.html#Cell-Arrays" accesskey="u" rel="up">Cell Arrays</a> [<a href="index.html#SEC_Contents" title="Table of contents" rel="contents">Contents</a>][<a href="Concept-Index.html#Concept-Index" title="Index" rel="index">Index</a>]</p>
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<hr>
<a name="Processing-Data-in-Cell-Arrays-1"></a>
<h4 class="subsection">6.2.5 Processing Data in Cell Arrays</h4>
<p>Data that is stored in a cell array can be processed in several ways
depending on the actual data. The simplest way to process that data
is to iterate through it using one or more <code>for</code> loops. The same
idea can be implemented more easily through the use of the <code>cellfun</code>
function that calls a user-specified function on all elements of a cell
array. See <a href="Function-Application.html#XREFcellfun">cellfun</a>.
</p>
<p>An alternative is to convert the data to a different container, such as
a matrix or a data structure. Depending on the data this is possible
using the <code>cell2mat</code> and <code>cell2struct</code> functions.
</p>
<a name="XREFcell2mat"></a><dl>
<dt><a name="index-cell2mat"></a>Function File: <em><var>m</var> =</em> <strong>cell2mat</strong> <em>(<var>c</var>)</em></dt>
<dd><p>Convert the cell array <var>c</var> into a matrix by concatenating all
elements of <var>c</var> into a hyperrectangle.
</p>
<p>Elements of <var>c</var> must be numeric, logical, or char matrices; or cell
arrays; or structs; and <code>cat</code> must be able to concatenate them together.
</p>
<p><strong>See also:</strong> <a href="Creating-Cell-Arrays.html#XREFmat2cell">mat2cell</a>, <a href="Creating-Cell-Arrays.html#XREFnum2cell">num2cell</a>.
</p></dd></dl>
<a name="XREFcell2struct"></a><dl>
<dt><a name="index-cell2struct"></a>Built-in Function: <em></em> <strong>cell2struct</strong> <em>(<var>cell</var>, <var>fields</var>)</em></dt>
<dt><a name="index-cell2struct-1"></a>Built-in Function: <em></em> <strong>cell2struct</strong> <em>(<var>cell</var>, <var>fields</var>, <var>dim</var>)</em></dt>
<dd><p>Convert <var>cell</var> to a structure.
</p>
<p>The number of fields in <var>fields</var> must match the number of elements in
<var>cell</var> along dimension <var>dim</var>, that is
<code>numel (<var>fields</var>) == size (<var>cell</var>, <var>dim</var>)</code>. If <var>dim</var>
is omitted, a value of 1 is assumed.
</p>
<div class="example">
<pre class="example">A = cell2struct ({"Peter", "Hannah", "Robert";
185, 170, 168},
{"Name","Height"}, 1);
A(1)
⇒
{
Name = Peter
Height = 185
}
</pre></div>
<p><strong>See also:</strong> <a href="Processing-Data-in-Structures.html#XREFstruct2cell">struct2cell</a>, <a href="#XREFcell2mat">cell2mat</a>, <a href="Creating-Structures.html#XREFstruct">struct</a>.
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