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<div class="textblock"><p>Section: <a class="el" href="sec_vtkgraphics.html">Visualization Toolkit Graphics Classes</a> </p>
<h1><a class="anchor" id="Usage"></a>
Usage</h1>
<p>vtkProgrammableDataObjectSource is a source object that is programmable by the user. The output of the filter is a data object (vtkDataObject) which represents data via an instance of field data. To use this object, you must specify a function that creates the output.</p>
<p>Example use of this filter includes reading tabular data and encoding it as vtkFieldData. You can then use filters like vtkDataObjectToDataSetFilter to convert the data object to a dataset and then visualize it. Another important use of this class is that it allows users of interpreters (e.g., Tcl or Java) the ability to write source objects without having to recompile C++ code or generate new libraries.</p>
<p>To create an instance of class vtkProgrammableDataObjectSource, simply invoke its constructor as follows </p>
<pre class="fragment"> obj = vtkProgrammableDataObjectSource
</pre> <h1><a class="anchor" id="Methods"></a>
Methods</h1>
<p>The class vtkProgrammableDataObjectSource has several methods that can be used. They are listed below. Note that the documentation is translated automatically from the VTK sources, and may not be completely intelligible. When in doubt, consult the VTK website. In the methods listed below, <code>obj</code> is an instance of the vtkProgrammableDataObjectSource class. </p>
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<li>
<code>string = obj.GetClassName ()</code> </li>
<li>
<code>int = obj.IsA (string name)</code> </li>
<li>
<code>vtkProgrammableDataObjectSource = obj.NewInstance ()</code> </li>
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<code>vtkProgrammableDataObjectSource = obj.SafeDownCast (vtkObject o)</code> </li>
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