[vtkusers] vtkPoints to vtkPolyData

David E DeMarle dave.demarle at kitware.com
Thu Feb 19 15:25:45 EST 2009


And one way to do that is to apply a glyph filter.

On Thu, Feb 19, 2009 at 1:31 PM, Amy Squillacote <amylists at gmail.com> wrote:
> In order to "see" the points in ParaView, you would need to create a
> vtkVertex cell for each point. In VTK, a "vertex" is a cell (and will be
> visible in ParaView); a "point" is just an (x, y, z) coordinate.
>
> - Amy
>
> On Thu, Feb 19, 2009 at 9:35 AM, Syrkina Ekaterina <syrkinae at ethz.ch> wrote:
>>
>> Hello,
>>
>> I recently needed to display point cloud in paraview and "converted"
>> vtkPoints to vtkPolyData this way:
>>
>> vtkPolyData *data = vtkPolyData::New();
>> vtkPoints *points = vtkPoints::New();
>> // some code to read points from text file into vtkPoints object //
>> data->SetPoints(points);
>>
>> It didn't solve my problem, since paraview displays only points
>> associated by geometry, so one has to define faces or smth else. But
>> maybe it solves your problem.
>>
>> Best,
>> Katya
>>
>> > -----Original Message-----
>> > From: vtkusers-bounces at vtk.org
>> > [mailto:vtkusers-bounces at vtk.org] On Behalf Of kent williams
>> > Sent: Thursday, February 19, 2009 3:47 PM
>> > To: VTK users group
>> > Subject: Re: [vtkusers] vtkPoints to vtkPolyData
>> >
>> > I'm not sure what you're asking.  Are you saying you have a set of 3D
>> > points, and want to convert them into a polygon?  Then Dean's function
>> > works just fine. It assumes that your points are ordered, and it's up
>> > to you to make sure they're co-planar, but that function is 3D.
>> >
>> > If you're doing something more complicated, you need to be more
>> > specific about what you're trying.
>> >
>> > On Thu, Feb 19, 2009 at 6:10 AM, Daniel Meier
>> > <daniel.meier at oleco.net> wrote:
>> > > Hi all,
>> > >
>> > > I'm new to vtk. How can I convert vtkPoints to vtkPolydata.
>> > The points
>> > > represent an object in 3D. I have found
>> > ConvertPointSequenceToPolyData (
>> > >
>> > http://www.vtk.org/pipermail/vtkusers/2007-November/093317.htm
>> > l )  from Dean
>> > > Inglis which works fine in 2D but how can this be done in 3D?
>> > >
>> > > Thanks for any suggestions,
>> > >
>> > > Daniel
>> > > ________________________________
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>
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-- 
David E DeMarle
Kitware, Inc.
R&D Engineer
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