[yt-users] Pressure in Enzo methods

[Matthew Turk]

Hi Dave,

Sorry for the abruptness!  If you're already editing the source code,
just toss it on to the field_info_container.py definition.  Stick it
in the __init__ method like so:

self._show_field_errors = [("gas","pressure")]

On Tue, May 5, 2015 at 12:58 PM, David Collins <dcollins4096 at gmail.com> wrote:
> What instance of FieldInfoContainer should I attach that to?
>
> On Tue, May 5, 2015 at 1:54 PM, Matthew Turk <matthewturk at gmail.com> wrote:
>>
>> You can append ("gas", "pressure") to _show_field_errors on
>> FieldInfoContainer to raise whatever fails.
>>
>>
>> On Tue, May 5, 2015, 12:49 PM Nathan Goldbaum <nathan12343 at gmail.com>
>> wrote:
>>>
>>> Hi Dave,
>>>
>>> The pressure field is probably coming from the definition in
>>> yt/fields/fluid_fields.py.  If it doesn't show up for your dataset, it's
>>> likely failing field detection.
>>>
>>> I'm not sure whether we have a test dataset on yt-project.org/data that
>>> uses HydroMethod 4 or 6.  Do you happen to have a small one I could play
>>> with?
>>>
>>> -Nathan
>>>
>>> On Tue, May 5, 2015 at 10:40 AM, David Collins <dcollins4096 at gmail.com>
>>> wrote:
>>>>
>>>> Hi, Matt--
>>>>
>>>> Thanks for your input.  In frontends/enzo/feilds.py, I see where the
>>>> thermal_energy is computed based on HydroMethod=4,6, but there's no pressure
>>>> field.  Which in principle is fine, since the computation in
>>>> yt/fields/fluid_fields.py (in setup_fluid_fields) is fine.  Does that
>>>> instance not get called?
>>>>
>>>> On Tue, May 5, 2015 at 12:26 PM, Matthew Turk <matthewturk at gmail.com>
>>>> wrote:
>>>>>
>>>>> Hi Dave,
>>>>>
>>>>> You can see all the logic inside yt/frontends/enzo/fields.py --
>>>>> probably not too hard to add a new one, and then PR it!
>>>>>
>>>>> -Matt
>>>>>
>>>>> On Tue, May 5, 2015 at 11:02 AM, David Collins <dcollins4096 at gmail.com>
>>>>> wrote:
>>>>> > Hi, Everybody!
>>>>> >
>>>>> > I'm having a little trouble with getting pressure when using
>>>>> > HydroMethod=6.
>>>>> > For instance,
>>>>> >>>> ds0.all_data()['pressure']
>>>>> >
>>>>> > Traceback (most recent call last):
>>>>> >   File "<stdin>", line 1, in <module>
>>>>> >   File
>>>>> >
>>>>> > "/Users/dcollins/local-2014-09-24-yt3/src/yt-hg/yt/data_objects/data_containers.py",
>>>>> > line 233, in __getitem__
>>>>> >     f = self._determine_fields([key])[0]
>>>>> >   File
>>>>> >
>>>>> > "/Users/dcollins/local-2014-09-24-yt3/src/yt-hg/yt/data_objects/data_containers.py",
>>>>> > line 489, in _determine_fields
>>>>> >     finfo = self.ds._get_field_info("unknown", fname)
>>>>> >   File
>>>>> >
>>>>> > "/Users/dcollins/local-2014-09-24-yt3/src/yt-hg/yt/data_objects/static_output.py",
>>>>> > line 482, in _get_field_info
>>>>> >     raise YTFieldNotFound((ftype, fname), self)
>>>>> > yt.utilities.exceptions.YTFieldNotFound: Could not find field
>>>>> > '('all',
>>>>> > 'pressure')' in data0000.
>>>>> >
>>>>> >
>>>>> >
>>>>> > while this works for a run with HydroMethod = 0.
>>>>> > Could someone give me the nickel tour of hydro method impacts setting
>>>>> > of
>>>>> > variables, and where I should look to make sure pressure is defined?
>>>>> >
>>>>> > Thanks!
>>>>> > d.
>>>>> >
>>>>> > --
>>>>> > -- Sent from a computer.
>>>>> >
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>>>>
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