Hi,<br><br>&nbsp;&nbsp;&nbsp; I also don't know the difference between SetInputConnection and SetInput?? Who can tell me the proxy object meaning in VTK?&nbsp; Thanks a lot! Any idea is appreciated!<br><br><br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; BoShi
<br><br><table border="0" cellpadding="0" cellspacing="0"><tbody><tr><td class="md" nowrap="nowrap" valign="top"><a class="el" href="file:///H:/home/wlz/html/classvtkAlgorithmOutput.html">vtkAlgorithmOutput</a>* vtkAlgorithm::GetOutputPort           
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<p>
Get a proxy object corresponding to the given output port of this
algorithm. The proxy object can be passed to another algorithm's <a class="el" href="file:///H:/home/wlz/html/classvtkAlgorithm.html#16be81ee647daeefde729e57c43d5f0d">SetInputConnection()</a>, <a class="el" href="file:///H:/home/wlz/html/classvtkAlgorithm.html#e1b6d81a449a11b4366d3b4f2f176d67">
AddInputConnection()</a>, and <a class="el" href="file:///H:/home/wlz/html/classvtkAlgorithm.html#c986999efbd0bb66698237a0613bd3a4">RemoveInputConnection()</a> methods to modify pipeline connectivity.     </p></td></tr></tbody>
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