[yt-users] Active Particle Read Failure

[Nathan Goldbaum]

You should try updating to the latest development version of yt --- yt 3.1
is a couple years old at this point and there have been a number of
bugfixes since then. Let us know if updating doesn't fix your problem.

On Tuesday, May 3, 2016, John Regan <johnanthonyregan at gmail.com> wrote:

> Hi All,
>
> I'm having trouble getting YT3.1 to read an active particle from an Enzo
> dataset. I can see the particle just fine with hdf5view so it appears to be
> there but YT is falling over when it tries to read the particle.
>
>
> The error I get is:
>
>
> Traceback (most recent call last):
>   File "CompareFieldsInCore.py", line 138, in <module>
>     sphere = ds.h.sphere(centre, (10.0, 'kpc'))
>   File
> "/cosma/home/dp004/dc-rega4/YT/yt-x86_64/src/yt-hg/yt/data_objects/static_output.py",
> line 378, in h
>     self._index_proxy = IndexProxy(self)
>   File
> "/cosma/home/dp004/dc-rega4/YT/yt-x86_64/src/yt-hg/yt/data_objects/static_output.py",
> line 129, in __init__
>     ds.index
>   File
> "/cosma/home/dp004/dc-rega4/YT/yt-x86_64/src/yt-hg/yt/data_objects/static_output.py",
> line 365, in index
>     self, dataset_type=self.dataset_type)
>   File
> "/cosma/home/dp004/dc-rega4/YT/yt-x86_64/src/yt-hg/yt/frontends/enzo/data_structures.py",
> line 211, in __init__
>     GridIndex.__init__(self, ds, dataset_type)
>   File
> "/cosma/home/dp004/dc-rega4/YT/yt-x86_64/src/yt-hg/yt/geometry/geometry_handler.py",
> line 58, in __init__
>     self._detect_output_fields()
>   File
> "/cosma/home/dp004/dc-rega4/YT/yt-x86_64/src/yt-hg/yt/frontends/enzo/data_structures.py",
> line 447, in _detect_output_fields
>     ap_fields = self._detect_active_particle_fields()
>   File
> "/cosma/home/dp004/dc-rega4/YT/yt-x86_64/src/yt-hg/yt/frontends/enzo/data_structures.py",
> line 407, in _detect_active_particle_fields
>     g = gs[0]
> IndexError: index 0 is out of bounds for axis 0 with size 0
>
>
> As far as I can see YT isn't able to get the gridID for the particle (its
> in grid 3). Any ideas what YT is missing here?
>
> Cheers,
> John
>
> The dataset is here (~500 MBs)
> https://dl.dropboxusercontent.com/u/18978426/Enzo/RD0008.tgz
>
>
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