[aspect-devel] Tracers visualization

[Elbridge Gerry Puckett]

Hi Lev,

>     2. Tracers are distributed over a cube rather than over my model
>     domain (which is a parallelepiped)
    Which, particle generator are you using, a random one or
    uniform_box.cc, or ... ?

    We haven't implemented a parallelepiped in the uniform box or the
    other deterministic particle generators.  We can put it on our To-Do
    list. You could open an issue at

        https://github.com/geodynamics/aspect

    It would be helpful if you included a copy of your *.prm file, or at
    least the part that defines the geometry.

    If you're using a random particle generator, random_uniform.cc, we'd
    have to look to see if it is designed to place particles over an
    arbitrary model geometry.  My guess is that the random particle
    generator might work for you for now.

    When you attend the ASPECT Hackathon later this month we can show
    you how to implement a plugin to uniformly distribute the particles
    over a parallelepiped and help you make a pull request to merge it
    with the master branch of ASPECT.

>     1. I set List of tracer properties = initial composition, but when
>     I open them in ParaView and choose "initial C_0" (or C_1, or any
>     other one) in the dropdown menu, all the tracers are colored the
>     same. 

This is probably a ParaView issue. I haven't used

    List of tracer properties = initial composition,

What I would do is open the particle*.vtu files (they are ASCII files 
and therefore human readable) and see if the particles have a property 
associated with them called composition and if so, do particles have 
different values based on their initial location, say, 0 and 1.  It 
should be possible to color based on that property, it's just a matter 
of playing around with ParaView.  I'm sure others who read 
aspect-devel at geodynamics.org will know better than I how to do this.

>     3. I can't make both tracers and my model visible in Paraview at
>     the same time - is it the intended behaviour?

I believe Harsha has helped you solve this. Problem correct?

- Gerry

On 6/15/2016 11:13 AM, Lev Karatun wrote:
> Hi,
>
> I'm trying to incorporate tracers into the model, but I'm facing 
> several problems.
>
> 1. I set List of tracer properties = initial composition, but when I 
> open them in ParaView and choose "initial C_0" (or C_1, or any other 
> one) in the dropdown menu, all the tracers are colored the same.
> 2. Tracers are distributed over a cube rather than over my model 
> domain (which is a parallelepiped)
> 3. I can't make both tracers and my model visible in Paraview at the 
> same time - is it the intended behaviour?
>
> Thanks in advance!
>
> Best regards,
> Lev Karatun.

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