[yt-users] Deposited Particle Data

[Jason Galyardt]

Hi all,

Per Matt's suggestion, I've tried accessing the FLASH particles via ['all',
'particle_mass'], to no avail. The traceback can be found here:

http://paste.yt-project.org/show/5541/

I get the same zero-length selection exception when I use ['io',
'particle_position_x'] or ['all', 'particle_position_x'], as Yuan suggests.

To further check the input particle file format, I used the low-level h5py
interface. I was able to read both particle position and mass. This script
doesn't know about the grid, however.

Any other ideas?

Thanks,
Jason

On Sat, May 9, 2015 at 9:59 PM, Yuan Li <bear0980 at gmail.com> wrote:

> I tried ['io', 'particle_position_x'] on my Flash data, and it seemed to
> work just fine. I use the latest yt.
>
> Yuan
>
> On Sat, May 9, 2015 at 7:51 PM, Nathan Goldbaum <nathan12343 at gmail.com>
> wrote:
>
>> I'm not able to reproduce this using the Orbit dataset on
>> yt-project.org/data. Unfortunately I don't think we have any other flash
>> test datasets that use particles.
>>
>> It would also help to see the full error traceback you're getting.
>>
>> On Sat, May 9, 2015 at 4:32 PM, Matthew Turk <matthewturk at gmail.com>
>> wrote:
>>
>>> Hi Jason,
>>>
>>> Don't worry about posting the data -- that's completely fine, and I
>>> think in general we should do all we can to reproduce without the
>>> dataset!  I'm wondering if perhaps there's something funny about the
>>> "io" particle field.  If you try "all" instead of "io", does it work
>>> any better?
>>>
>>> -Matt
>>>
>>> On Fri, May 8, 2015 at 1:01 PM, Jason Galyardt <jason.galyardt at gmail.com>
>>> wrote:
>>> > Hi all,
>>> >
>>> > Has anyone had success accessing deposited particle data generated with
>>> > FLASH? It appears in the dataset derived field list, but when I go to
>>> access
>>> > it (via ds.all_data()['deposit', 'io_mass']), I get an error concerning
>>> > zero-length selection. I get the same error when I try to access the
>>> > 'standard' particle data (from ds.field_list), such as
>>> ds.all_data()['io',
>>> > 'particle_mass'].
>>> >
>>> > Does this ring any bells? This very well could be user error, so
>>> please let
>>> > me know if that seems to be the case. I've pasted a basic script to
>>> > reproduce the error here:
>>> >
>>> > http://paste.yt-project.org/show/5538/
>>> >
>>> > I'd rather not post the dataset publicly, but I can send you a link, if
>>> > you're interested.
>>> >
>>> > Cheers,
>>> > Jason Galyardt
>>> >
>>> >
>>> >
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