<div>Dear David and Lynx,</div><blockquote class="gmail_quote" style="margin-top:0px;margin-right:0px;margin-bottom:0px;margin-left:0.8ex;border-left-width:1px;border-left-color:rgb(204, 204, 204);border-left-style:solid;padding-left:1ex">

I don&#39;t know about how to improve performance, but this will draw an object at every point:</blockquote><blockquote class="gmail_quote" style="margin-top:0px;margin-right:0px;margin-bottom:0px;margin-left:0.8ex;border-left-width:1px;border-left-color:rgb(204, 204, 204);border-left-style:solid;padding-left:1ex">

<a href="http://www.vtk.org/Wiki/VTK/Examples/vtkGlyph3D" target="_blank">http://www.vtk.org/Wiki/VTK/Examples/vtkGlyph3D</a></blockquote><div class="gmail_quote"><div>Thank you. This is what I want (<span class="Apple-style-span" style="font-family: arial, sans-serif; font-size: 13px; border-collapse: collapse; ">individual  objects  for  each  point)<span class="Apple-style-span" style="border-collapse: separate; font-family: arial; font-size: small; ">, and the performance is acceptable.</span></span></div>

<div><br></div><div>Cheers!</div><div>JJCAO </div></div><br>