[Paraview] how to color particles

[Utkarsh Ayachit]

Here's a sample:

# vtk DataFile Version 3.0
vtk output
ASCII
DATASET POLYDATA
POINTS 4 float
-0.5 -0.5 0
0.5 -0.5 0
-0.5 0.5 0
0.5 0.5 0

POINT_DATA 4
VECTORS Velocity double
0 0 1
0 1 1
1 0 1
1 1 1




On Mon, Sep 28, 2009 at 2:50 PM, Rafael Pacheco <rpacheco at math.asu.edu> wrote:
> 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
> --------------------------------------------------------------------
>  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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