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<DIV><FONT face=&#23435;&#20307; size=2>I&nbsp;pass&nbsp;polydata through 
vtkDelaunay2D.</FONT></DIV>
<DIV><FONT face=&#23435;&#20307; size=2>for Output polydata: numofcell = 20592</FONT></DIV>
<DIV><FONT face=&#23435;&#20307; size=2></FONT>&nbsp;</DIV>
<DIV><FONT face=&#23435;&#20307; size=2>But the picture look like:</FONT></DIV>
<DIV><FONT face=&#23435;&#20307; size=2></FONT>&nbsp;</DIV>
<DIV><FONT face=&#23435;&#20307; size=2><IMG alt="" hspace=0 
src="cid:003c01c3b953$e56017d0$c0a9fea9@zengqin" align=baseline 
border=0>&nbsp;&nbsp; </FONT></DIV>
<DIV><FONT face=&#23435;&#20307; size=2></FONT>&nbsp;</DIV>
<DIV><FONT face=&#23435;&#20307; size=2></FONT>&nbsp;</DIV>
<DIV><FONT face=&#23435;&#20307; size=2>if i use vtkOutlineFilter,</FONT></DIV>
<DIV><FONT face=&#23435;&#20307; size=2></FONT>&nbsp;</DIV>
<DIV><FONT face=&#23435;&#20307; size=2>the result is : (Just a rectangle).&nbsp;&nbsp; 
<STRONG><FONT color=#ff0000>So where ARE MY 20592 
cells???</FONT></STRONG></FONT></DIV>
<DIV><FONT face=&#23435;&#20307; color=#ff0000 size=2><STRONG></STRONG></FONT>&nbsp;</DIV>
<DIV><IMG alt="" hspace=0 src="cid:003d01c3b953$e584b6d0$c0a9fea9@zengqin" 
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