[Paraview] how to color particles

[Rafael Pacheco]

Ken,
many thanks, maybe what I need is a very simple example on how to do this using vtk legacy file? Here is a sample of what I have (I do not have the velocity field there, as I do not know how to put it there).

# vtk DataFile Version 3.0
Spin-up velocity field
ASCII
DATASET POLYDATA
POINTS     10000 float
      1.915706      0.753999      3.527802
      1.495156      0.089507      4.072335
      0.400480      0.453014      3.814184
      0.177201      0.131611      4.245033

> You should be able to color particles like you color any other type of data.  Simply choose the field to color by.
> 
> -Ken
> 
> On 9/28/09 12:29 PM, "Rafael Pacheco" <rpacheco at math.asu.edu> wrote:
> 
> Hello, 
> 
> I have a set of particles that I can visualize using unstructured data and the gliph 'sphere', i.e. I have their position x,y,z. Is it possible to color the particles using a velocity field? The magnitude of the velocity (which I have on a structured grid) can be attached to the particle, for example, for any particle I can have the position and velocity, x,y,z,v 
> 
> The questions are:(1) can I color the particles using their velocity, and (2) if the previous comment is true, what type of format should I use? I am currently using asci vtk legacy. 
> 
> Thanks! 
> Rafael 
> 
> 
> 
>    ****      Kenneth Moreland
>     ***      Sandia National Laboratories
> ***********  
> *** *** ***  email: kmorel at sandia.gov
> **  ***  **  phone: (505) 844-8919
>     ***      web:   http://www.cs.unm.edu/~kmorel
> 
>

-- Rafael 
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 Department of Mathematics and Statistics 
 Arizona State University     
 P.O.  Box 871804             
 Tempe, Arizona  85287-1804                 
 Email: rpacheco at asu.edu       
 http://math.la.asu.edu/~rpacheco 
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