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of polys in the polydata. Try adding to vertices instead.

What I usually do for point clouds is something like this:

vtkPolyData * polyData = vtkPolyData::New();
vtkPoints * points = vtkPoints::New();
polyData->SetPoints(points);
polyData->Allocate();

...

vtkIdType id = points->InsertNextPoint(myPt);
polyData->InsertNextCell(VTK_VERTEX, 1, &id);

This usually works quite decently...

Regards,
Shash

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Hi,<br><br><div class=3D"gmail_quote">On Wed, Jun 10, 2009 at 11:54 AM, nju=
zg <span dir=3D"ltr">&lt;<a href=3D"mailto:guangz at u.washington.edu">guangz@=
u.washington.edu</a>&gt;</span> wrote:<br><blockquote class=3D"gmail_quote"=
 style=3D"border-left: 1px solid rgb(204, 204, 204); margin: 0pt 0pt 0pt 0.=
8ex; padding-left: 1ex;">
<br></blockquote><blockquote class=3D"gmail_quote" style=3D"border-left: 1p=
x solid rgb(204, 204, 204); margin: 0pt 0pt 0pt 0.8ex; padding-left: 1ex;">=
...<br>
=A0vtkCellArray* pts =3D vtkCellArray::New();<br>
// pts-&gt;InsertNextCell(1);<br>
 =A0for(int i=3D0; i&lt;xcoord_array.size();++i)<br>
 =A0 =A0 =A0 =A0 =A0pts-&gt;InsertCellPoint(i);<br>
...<br>
vtkPolyData *polydata=3DvtkPolyData::New();<br>
 =A0 polydata-&gt;SetPoints(points);<br>
 =A0 polydata-&gt;SetPolys(pts);<br>
 =A0 polydata-&gt;GetPointData()-&gt;SetScalars(scalars);</blockquote><div>=
<br><br>From the above lines, it looks like you&#39;re trying to add the po=
ints to a set of polys in the polydata. Try adding to vertices instead.<br>
<br>What I usually do for point clouds is something like this:<br><br>vtkPo=
lyData * polyData =3D vtkPolyData::New();<br>vtkPoints * points =3D vtkPoin=
ts::New();<br>polyData-&gt;SetPoints(points);<br>polyData-&gt;Allocate();<b=
r>
<br>...<br><br>vtkIdType id =3D points-&gt;InsertNextPoint(myPt);<br>polyDa=
ta-&gt;InsertNextCell(VTK_VERTEX, 1, &amp;id);<br><br>This usually works qu=
ite decently...<br><br>Regards,<br>Shash<br></div></div>

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