[yt-users] Particle filters and subsequent particle deposition

[Matthew Turk]

Hi Cameron,

On Sat, Jul 12, 2014 at 2:52 AM, Cameron Hummels <chummels at gmail.com> wrote:
> Hi John,
>
> That is what I figured as well, but it doesn't appear to automatically
> create those deposit fields when you add the particle field after
> initialization of the dataset.  Yes, it creates other deposit fields for the
> particle namespaces (e.g. Gas, Stars, DarkMatter) that are defined at
> initialization. However, when I create a particle filter which makes its own
> set of fields after initialization, these are not automatically added as
> deposit fields.

Hmm.  _setup_filtered_type is called by add_particle_filter, and then
it in turn calls _setup_particle_types([filter.name]), which should
eventually create the derived fields.  I would suggest trying to
figure out at what point the process stops, and then we can figure out
why it thinks it shouldn't add the deposit fields.

>
> I can add a notebook demonstrating this if it is easier.  I just thought
> someone might know of a way to force the generation of the deposit fields
> for newly derived fields not generated at initialization of a dataset.
>
> Cameron
>
>
> On Fri, Jul 11, 2014 at 6:51 PM, John Wise <jwise at physics.gatech.edu> wrote:
>>
>> Hi Cameron,
>>
>> If the particle filter name is called "bh", you can use the field
>> ("deposit", "bh_cic").  You can also use the other deposit fields, like
>> "bh_count", "bh_density", "bh_mass".
>>
>> Cheers,
>> John
>>
>>
>> On 07/11/2014 08:16 PM, Cameron Hummels wrote:
>>>
>>> I'm playing with the new particle filter functionality in yt-3.0, but
>>> I'm running into some problems.  I can successfully create a particle
>>> filter, but how do I get those fields to be subsequently deposited on
>>> the grid (like the other fields in the "deposit" namespace)?
>>>
>>> Is there a command for forcing a particle field deposition on to the
>>> grid?
>>>
>>> Thanks!
>>>
>>> Cameron
>>>
>>>
>>>
>>> --
>>> Cameron Hummels
>>> Postdoctoral Researcher
>>> Steward Observatory
>>> University of Arizona
>>> http://chummels.org
>>>
>>>
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>>
>> --
>> John Wise
>> Assistant Professor of Physics
>> Center for Relativistic Astrophysics, Georgia Tech
>> http://cosmo.gatech.edu
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>
>
>
>
> --
> Cameron Hummels
> Postdoctoral Researcher
> Steward Observatory
> University of Arizona
> http://chummels.org
>
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