[yt-users] Particle Fields Deposition

[Bili Dong]

Thanks Desika!

I’m experimenting on it. Seems that if I don’t specify bounding box, yt will try to guess it from the header information, which is exactly what I expected to specify. That’s so impressive!

I’m still wondering what the point is in specifying a larger bounding box as in the case of the cook book example. Is it just an example to show the functionality or am I missing something?

Regards,
Bili

> On Jul 21, 2015, at 12:04 PM, Desika Narayanan <dnarayan at haverford.edu> wrote:
> 
> no problem.  note - you might need to set a bounding box on the load command similar to this cook book example.
> 
> http://yt-project.org/doc/cookbook/gadget_notebook.html <http://yt-project.org/doc/cookbook/gadget_notebook.html>
> 
> 
> 
> On Tue, Jul 21, 2015 at 2:42 PM, Bili Dong <qobilidop at gmail.com <mailto:qobilidop at gmail.com>> wrote:
> Hi Desika,
> 
> Thanks for your help!
> 
> Regards,
> Bili
> 
> > On Jul 20, 2015, at 7:19 PM, Desika Narayanan <dnarayan at haverford.edu <mailto:dnarayan at haverford.edu>> wrote:
> >
> >
> > Hi Bili,
> > 1 . I wrote an example script that does some of the things you want in
> > question 1 here
> >
> > http://paste.yt-project.org/show/5727/ <http://paste.yt-project.org/show/5727/>
> >
> > 2. When you load the octree, you can change the threshold number of
> > particles necessary for refinment by :
> >
> > ds = load(filename, n_ref = 32)
> >
> > Not sure about 3 or 4, but I think the answer is that the kernel is
> > hardcoded in.
> >
> >
> > -d
> >
> > On Mon, Jul 20, 2015 at 4:56 PM, Bili Dong <qobilidop at gmail.com <mailto:qobilidop at gmail.com>> wrote:
> >
> >> Hi yt users,
> >>
> >> Recently I started using yt to analyze a Gadget-like data (one of the main
> >> difference being a different kernel function).  I?ve got several questions
> >> about the fields depostion mechanism:
> >>
> >> 1. How do I get the information of the underlying mesh onto which the
> >> fields are deposited?
> >> 2. Can I specify the properties of the underlying mesh? If so, how?
> >> 3. Can I customize the smoothing process, like using a different smoothing
> >> kernel?
> >> 4. I?m looking into the file yt/geometry/particle_smooth.pyx to learn the
> >> implementation details of the smoothing process. But for me, the code is
> >> not easy to read. So I?m wondering if there are further documentations I
> >> could refer to? (The only relevant doc I find for now is this one
> >> <http://yt-project.org/docs/dev/analyzing/fields.html#general-particle-fields <http://yt-project.org/docs/dev/analyzing/fields.html#general-particle-fields>>
> >> )
> >>
> >> I?m new to yt, so these questions might be dumb. Sorry for wasting your
> >> time if that?s the case.
> >>
> >> Thanks,
> >> Bili
> >>
> >>
> >>
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