<!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>Application-defined Data (GNU Octave (version 5.1.0))</title> <meta name="description" content="Application-defined Data (GNU Octave (version 5.1.0))"> <meta name="keywords" content="Application-defined Data (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="Advanced-Plotting.html#Advanced-Plotting" rel="up" title="Advanced Plotting"> <link href="Object-Groups.html#Object-Groups" rel="next" title="Object Groups"> <link href="Callbacks.html#Callbacks" rel="prev" title="Callbacks"> <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="Application_002ddefined-Data"></a> <div class="header"> <p> Next: <a href="Object-Groups.html#Object-Groups" accesskey="n" rel="next">Object Groups</a>, Previous: <a href="Callbacks.html#Callbacks" accesskey="p" rel="prev">Callbacks</a>, Up: <a href="Advanced-Plotting.html#Advanced-Plotting" accesskey="u" rel="up">Advanced Plotting</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="Application_002ddefined-Data-1"></a> <h4 class="subsection">15.4.5 Application-defined Data</h4> <a name="index-application_002ddefined-data"></a> <p>Octave has a provision for attaching application-defined data to a graphics handle. The data can be anything which is meaningful to the application, and will be completely ignored by Octave. </p> <a name="XREFsetappdata"></a><dl> <dt><a name="index-setappdata"></a><em></em> <strong>setappdata</strong> <em>(<var>h</var>, <var>name</var>, <var>value</var>)</em></dt> <dt><a name="index-setappdata-1"></a><em></em> <strong>setappdata</strong> <em>(<var>h</var>, <var>name1</var>, <var>value1</var>, <var>name2</var>, <var>value3</var>, …)</em></dt> <dt><a name="index-setappdata-2"></a><em></em> <strong>setappdata</strong> <em>(<var>h</var>, {<var>name1</var>, <var>name2</var>, …}, {<var>value1</var>, <var>value2</var>, …})</em></dt> <dd><p>Set the application data <var>name</var> to <var>value</var> for the graphics object with handle <var>h</var>. </p> <p><var>h</var> may also be a vector of graphics handles. If the application data with the specified <var>name</var> does not exist, it is created. </p> <p>Multiple <var>name</var>/<var>value</var> pairs can be specified. Alternatively, a cell array of <var>names</var> and a corresponding cell array of <var>values</var> can be specified. </p> <p><strong>See also:</strong> <a href="#XREFgetappdata">getappdata</a>, <a href="#XREFisappdata">isappdata</a>, <a href="#XREFrmappdata">rmappdata</a>, <a href="GUI-Utility-Functions.html#XREFguidata">guidata</a>, <a href="Graphics-Objects.html#XREFget">get</a>, <a href="Graphics-Objects.html#XREFset">set</a>, <a href="User_002dDefined-Preferences.html#XREFgetpref">getpref</a>, <a href="User_002dDefined-Preferences.html#XREFsetpref">setpref</a>. </p></dd></dl> <a name="XREFgetappdata"></a><dl> <dt><a name="index-getappdata"></a><em><var>value</var> =</em> <strong>getappdata</strong> <em>(<var>h</var>, <var>name</var>)</em></dt> <dt><a name="index-getappdata-1"></a><em><var>appdata</var> =</em> <strong>getappdata</strong> <em>(<var>h</var>)</em></dt> <dd><p>Return the <var>value</var> of the application data <var>name</var> for the graphics object with handle <var>h</var>. </p> <p><var>h</var> may also be a vector of graphics handles. If no second argument <var>name</var> is given then <code>getappdata</code> returns a structure, <var>appdata</var>, whose fields correspond to the appdata properties. </p> <p><strong>See also:</strong> <a href="#XREFsetappdata">setappdata</a>, <a href="#XREFisappdata">isappdata</a>, <a href="#XREFrmappdata">rmappdata</a>, <a href="GUI-Utility-Functions.html#XREFguidata">guidata</a>, <a href="Graphics-Objects.html#XREFget">get</a>, <a href="Graphics-Objects.html#XREFset">set</a>, <a href="User_002dDefined-Preferences.html#XREFgetpref">getpref</a>, <a href="User_002dDefined-Preferences.html#XREFsetpref">setpref</a>. </p></dd></dl> <a name="XREFrmappdata"></a><dl> <dt><a name="index-rmappdata"></a><em></em> <strong>rmappdata</strong> <em>(<var>h</var>, <var>name</var>)</em></dt> <dt><a name="index-rmappdata-1"></a><em></em> <strong>rmappdata</strong> <em>(<var>h</var>, <var>name1</var>, <var>name2</var>, …)</em></dt> <dd><p>Delete the application data <var>name</var> from the graphics object with handle <var>h</var>. </p> <p><var>h</var> may also be a vector of graphics handles. Multiple application data names may be supplied to delete several properties at once. </p> <p><strong>See also:</strong> <a href="#XREFsetappdata">setappdata</a>, <a href="#XREFgetappdata">getappdata</a>, <a href="#XREFisappdata">isappdata</a>. </p></dd></dl> <a name="XREFisappdata"></a><dl> <dt><a name="index-isappdata"></a><em><var>valid</var> =</em> <strong>isappdata</strong> <em>(<var>h</var>, <var>name</var>)</em></dt> <dd><p>Return true if the named application data, <var>name</var>, exists for the graphics object with handle <var>h</var>. </p> <p><var>h</var> may also be a vector of graphics handles. </p> <p><strong>See also:</strong> <a href="#XREFgetappdata">getappdata</a>, <a href="#XREFsetappdata">setappdata</a>, <a href="#XREFrmappdata">rmappdata</a>, <a href="GUI-Utility-Functions.html#XREFguidata">guidata</a>, <a href="Graphics-Objects.html#XREFget">get</a>, <a href="Graphics-Objects.html#XREFset">set</a>, <a href="User_002dDefined-Preferences.html#XREFgetpref">getpref</a>, <a href="User_002dDefined-Preferences.html#XREFsetpref">setpref</a>. </p></dd></dl> <hr> <div class="header"> <p> Next: <a href="Object-Groups.html#Object-Groups" accesskey="n" rel="next">Object Groups</a>, Previous: <a href="Callbacks.html#Callbacks" accesskey="p" rel="prev">Callbacks</a>, Up: <a href="Advanced-Plotting.html#Advanced-Plotting" accesskey="u" rel="up">Advanced Plotting</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> </body> </html>