[vtkusers] visualizing scattering of random points

[Patrick Birch]

Hi 

Thanks so much for your responses!

I will try vtkParticleReader first since I've never actually used ParaView. 

>From the posts I have been reading, it seems that  vtkParticleReader only takes in binary format data, is this right? In this case the input file would have a format of:  x1 y1 z1 x2 y2 z2 x3 y3 z3... but in binary, correct? 

Also, in order to colour code each point, I would like to assign scalar values, however this is usually done on derivatives of the class vtkDataSet,  vtkParticleReader only has an output that is a vtkDataSet, is it still possible to "SetScalars"?

For example:

ParticleReaderObject->GetOutput()->GetPointData()->SetScalars( FloatArrayObject )

Thank-you kindly and best regards,

-PB

Date: Tue, 18 Sep 2007 12:28:50 +1000
From: andrew.amaclean at gmail.com
To: lost_bits1110 at hotmail.com
Subject: Re: [vtkusers] visualizing scattering of random points
CC: vtkusers at vtk.org

Use vtkParticleReader
 
Regards
   Andrew


 
On 9/18/07, Patrick Birch <lost_bits1110 at hotmail.com> wrote:

Hi experts,

I need to visualize a random scattering of points (unstructured), and then colour code them according to their associated scalar values.

It seems that the only way to visualize unstructured points is to somehow create a surface out of them, whether by delaunay triangulation or splatting.


Is there a way to just view the points as is? 

Thank-you kindly and best regards

PB



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