[yt-users] Accumulation in 3.0

[John Regan]

Hi Matt,

Ah I see what you mean now. Changing 'radius' to 'particle_radius' worked
nicely. However, the results are bit weird.

rpm = yt.create_profile(sp, ['particle_radius'],  ['particle_mass'],
                        units = {'particle_radius': 'pc', 'particle_mass' :
'Msun'},
                        n_bins=20, weight_field=None, accumulation=True,
fractional=False)
print "Particle Mass = ", rpm["particle_mass"]

Particle Mass =  [  0.00000000e+00   0.00000000e+00   0.00000000e+00
2.17730865e+47
   2.39503952e+48   5.00780990e+48   9.36242721e+48   2.87404742e+49
   8.03426893e+49   1.91385431e+50   4.44824158e+50   1.02681876e+51
   2.28900459e+51   4.74174278e+51   1.05066029e+52   2.07602025e+52
   3.49614805e+52   4.89060538e+52   6.82621100e+52   1.08907237e+53] Msun

Any idea what is causing the crazy values?

On Mon, Nov 3, 2014 at 4:23 PM, Matthew Turk <matthewturk at gmail.com> wrote:

> Hi John,
>
> It was exactly the same error, when you used particle_radius in both
> places that "radius" was used before?
>
> -Matt
>
>
> On Mon Nov 03 2014 at 7:06:44 AM John Regan <johnanthonyregan at gmail.com>
> wrote:
>
>> Hi Kacper,
>>
>> Of course - I should have noticed that. Thanks for finding that.
>> However, I notice that when I try to create a profile for the Dark
>> (particle) matter I run into some trouble as well.
>>
>> rpm = yt.create_profile(sp, 'radius',  ['particle_mass'],
>>                         units = {'radius': 'pc', 'particle_mass' :
>> 'Msun'},
>>                         n_bins=20, weight_field=None, accumulation=True,
>> fractional=False)
>>
>> This gives the following error:
>>
>> Traceback (most recent call last):
>>   File "EnclosedMass.py", line 35, in <module>
>>     n_bins=20, weight_field=None, accumulation=True, fractional=False)
>>   File
>> "/homeappl/home/regan/appl_taito/YT/Dev-3.0/yt/yt/data_objects/profiles.py",
>> line 1361, in create_profile
>>     obj.add_fields([field for field in fields])
>>   File
>> "/homeappl/home/regan/appl_taito/YT/Dev-3.0/yt/yt/data_objects/profiles.py",
>> line 782, in add_fields
>>     self._bin_chunk(chunk, fields, temp_storage)
>>   File
>> "/homeappl/home/regan/appl_taito/YT/Dev-3.0/yt/yt/data_objects/profiles.py",
>> line 979, in _bin_chunk
>>     rv = self._get_data(chunk, fields)
>>   File
>> "/homeappl/home/regan/appl_taito/YT/Dev-3.0/yt/yt/data_objects/profiles.py",
>> line 910, in _get_data
>>     arr[:,i] = chunk[field][filter]
>>   File
>> "/homeappl/home/regan/appl_taito/YT/Dev-3.0/yt/yt/units/yt_array.py", line
>> 963, in __getitem__
>>     ret = super(YTArray, self).__getitem__(item)
>> ValueError: too many boolean indices
>>
>>
>> Has anyone seen this before? For the 'cell_mass' everything works fine.
>>
>> Cheers,
>> John
>>
>> On Sat, Nov 1, 2014 at 6:49 PM, Kacper Kowalik <xarthisius.kk at gmail.com>
>> wrote:
>>
>>> Hi John,
>>> I think that if you want to compute "total" instead of mean you need to
>>> set weight_field to None in create_profile.
>>> Cheers,
>>> Kacper
>>>
>>> On Sat Nov 01 2014 at 6:10:50 AM John Regan <johnanthonyregan at gmail.com>
>>> wrote:
>>>
>>>> Hi All,
>>>>
>>>> Is the accumulation flag working in 3.0?
>>>> I tried to plot the enclosed mass in a sphere and I got some funny
>>>> results.
>>>>
>>>> rpm = yt.create_profile(sp, 'radius',  'cell_mass',
>>>>                         units = {'radius': 'pc', 'cell_mass' : 'Msun'},
>>>>                         weight_field='density', accumulation=True,
>>>> fractional=False)
>>>>
>>>> print "Mass = ", rpm["gas", "cell_mass"]
>>>>
>>>> In this case bin[n-1] gives a mass of something like 0.5 Msun but when
>>>> I print the totals quantity I get a value of several orders of magnitude
>>>> higher and closer to what I would expect.
>>>>
>>>> sp.quantities.total_quantity(["cell_mass", "particle_mass"])
>>>>
>>>> Cheers,
>>>> John
>>>> _______________________________________________
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