<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd"> <html> <!-- Created by GNU Texinfo 6.5, http://www.gnu.org/software/texinfo/ --> <head> <meta http-equiv="Content-Type" content="text/html; charset=utf-8"> <title>Processing Data in Structures (GNU Octave (version 5.1.0))</title> <meta name="description" content="Processing Data in Structures (GNU Octave (version 5.1.0))"> <meta name="keywords" content="Processing Data in Structures (GNU Octave (version 5.1.0))"> <meta name="resource-type" content="document"> <meta name="distribution" content="global"> <meta name="Generator" content="makeinfo"> <link href="index.html#Top" rel="start" title="Top"> <link href="Concept-Index.html#Concept-Index" rel="index" title="Concept Index"> <link href="index.html#SEC_Contents" rel="contents" title="Table of Contents"> <link href="Structures.html#Structures" rel="up" title="Structures"> <link href="containers_002eMap.html#containers_002eMap" rel="next" title="containers.Map"> <link href="Manipulating-Structures.html#Manipulating-Structures" rel="prev" title="Manipulating Structures"> <style type="text/css"> <!-- a.summary-letter {text-decoration: none} blockquote.indentedblock {margin-right: 0em} blockquote.smallindentedblock {margin-right: 0em; font-size: smaller} blockquote.smallquotation {font-size: smaller} div.display {margin-left: 3.2em} div.example {margin-left: 3.2em} div.lisp {margin-left: 3.2em} div.smalldisplay {margin-left: 3.2em} div.smallexample {margin-left: 3.2em} div.smalllisp {margin-left: 3.2em} kbd {font-style: oblique} pre.display {font-family: inherit} pre.format {font-family: inherit} pre.menu-comment {font-family: serif} pre.menu-preformatted {font-family: serif} pre.smalldisplay {font-family: inherit; font-size: smaller} pre.smallexample {font-size: smaller} pre.smallformat {font-family: inherit; font-size: smaller} pre.smalllisp {font-size: smaller} span.nolinebreak {white-space: nowrap} span.roman {font-family: initial; font-weight: normal} span.sansserif {font-family: sans-serif; font-weight: normal} ul.no-bullet {list-style: none} --> </style> <link rel="stylesheet" type="text/css" href="octave.css"> </head> <body lang="en"> <a name="Processing-Data-in-Structures"></a> <div class="header"> <p> Previous: <a href="Manipulating-Structures.html#Manipulating-Structures" accesskey="p" rel="prev">Manipulating Structures</a>, Up: <a href="Structures.html#Structures" accesskey="u" rel="up">Structures</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> </div> <hr> <a name="Processing-Data-in-Structures-1"></a> <h4 class="subsection">6.1.5 Processing Data in Structures</h4> <p>The simplest way to process data in a structure is within a <code>for</code> loop (see <a href="Looping-Over-Structure-Elements.html#Looping-Over-Structure-Elements">Looping Over Structure Elements</a>). A similar effect can be achieved with the <code>structfun</code> function, where a user defined function is applied to each field of the structure. See <a href="Function-Application.html#XREFstructfun">structfun</a>. </p> <p>Alternatively, to process the data in a structure, the structure might be converted to another type of container before being treated. </p> <a name="XREFstruct2cell"></a><dl> <dt><a name="index-struct2cell"></a><em><var>c</var> =</em> <strong>struct2cell</strong> <em>(<var>s</var>)</em></dt> <dd><p>Create a new cell array from the objects stored in the struct object. </p> <p>If <var>f</var> is the number of fields in the structure, the resulting cell array will have a dimension vector corresponding to <code>[<var>f</var> size(<var>s</var>)]</code>. For example: </p> <div class="example"> <pre class="example">s = struct ("name", {"Peter", "Hannah", "Robert"}, "age", {23, 16, 3}); c = struct2cell (s) ⇒ c = {2x1x3 Cell Array} c(1,1,:)(:) ⇒ { [1,1] = Peter [2,1] = Hannah [3,1] = Robert } c(2,1,:)(:) ⇒ { [1,1] = 23 [2,1] = 16 [3,1] = 3 } </pre></div> <p><strong>See also:</strong> <a href="Processing-Data-in-Cell-Arrays.html#XREFcell2struct">cell2struct</a>, <a href="Manipulating-Structures.html#XREFfieldnames">fieldnames</a>. </p></dd></dl> </body> </html>