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<DIV><FONT face=Arial size=2><SPAN class=566561818-08102006>Dear VTK
users,</SPAN></FONT></DIV>
<DIV><FONT face=Arial size=2><SPAN class=566561818-08102006> I
constructed some polygonal data and visualized these polylines. But I got the
following error and warning messages </SPAN></FONT></DIV>
<DIV><FONT face=Arial size=2><SPAN
class=566561818-08102006></SPAN></FONT> </DIV>
<DIV><FONT face=Arial size=2><SPAN class=566561818-08102006>ERROR: In
..\..\Filtering\vtkPolyLine.cxx, line 102<BR>vtkPolyLine (05A503E0): Coincident
points in polyline...can't compute normals</SPAN></FONT></DIV>
<DIV> </DIV>
<DIV><FONT face=Arial size=2><SPAN class=566561818-08102006>Warning: In
..\..\Graphics\vtkTubeFilter.cxx, line 217<BR>vtkTubeFilter (059619B8): Could
not generate normals for line. Skipping to next.<BR></SPAN></FONT></DIV>
<DIV><FONT face=Arial size=2><SPAN class=566561818-08102006> I
would be grateful to anyone who can explain the possible reason(s) that
cause these errors and warnings and How can I isolate or determine the location
of these coincident points in polygonal data ?</SPAN></FONT></DIV>
<DIV><FONT face=Arial size=2><SPAN
class=566561818-08102006></SPAN></FONT> </DIV>
<DIV><FONT face=Arial size=2><SPAN class=566561818-08102006>
Good jobs everyone</SPAN></FONT></DIV>
<DIV><FONT face=Arial size=2><SPAN class=566561818-08102006>
Sincerely</SPAN></FONT></DIV>
<DIV><FONT face=Arial size=2><SPAN class=566561818-08102006>
Cem DEMiRKIR</DIV></SPAN></FONT></BODY></HTML>