[yt-users] ProfilePlot error: weakly-referenced object no longer exists

Nathan Goldbaum nathan12343 at gmail.com
Thu Aug 20 16:55:22 PDT 2015


I can reproduce this and have opened an issue to track it:
https://bitbucket.org/yt_analysis/yt/issues/1069/data-objects-used-to-create-a-profile-in-a


On Thu, Aug 20, 2015 at 6:33 PM, Mateusz Ruszkowski <mateuszr at umich.edu>
wrote:

>
>
>    Hi,
>
> I am trying to plot two profiles on one plot and adjust xlim. I am getting
> the following error message:
>
> Traceback (most recent call last):
>   File "test.py", line 17, in <module>
>     plot.set_xlim([0.1, 1.0])
>   File
> "/home/mateuszr/my_yt/yt-x86_64/src/yt-hg/yt/visualization/plot_container.py",
> line 62, in newfunc
>     rv = f(*args, **kwargs)
>   File
> "/home/mateuszr/my_yt/yt-x86_64/src/yt-hg/yt/visualization/profile_plotter.py",
> line 547, in set_xlim
>     extrema=extrema, units=units)
>   File
> "/home/mateuszr/my_yt/yt-x86_64/src/yt-hg/yt/data_objects/profiles.py",
> line 1436, in create_profile
>     bin_fields = data_source._determine_fields(bin_fields)
>   File
> "/home/mateuszr/my_yt/yt-x86_64/src/yt-hg/yt/data_objects/data_containers.py",
> line 552, in _determine_fields
>     finfo = self.ds._get_field_info(ftype, fname)
> ReferenceError: weakly-referenced object no longer exists
>
> ---------------------------------------------------
> I am using the following script:
>
> import yt
>
> profiles = []
> labels   = []
>
> for i in range(0,2,1):
>
>    print i
>    ds=yt.load("./sedov_hdf5_chk_%04i"%i)
>    my_data = ds.sphere(ds.domain_center, 1.0)
>    sim_time = ds.current_time
>    profiles.append(yt.create_profile(my_data, "radius",
> fields=["density"], weight_field="cell_volume", n_bins=32))
>    labels.append("t= %.0f" % sim_time)
>
> plot = yt.ProfilePlot.from_profiles(profiles, labels=labels)
> plot.set_xlim([0.1, 1.0])
> plot.save()
>
> ------------------------------------------------------
> I am using the following yt version:
>
> Version = 3.3-dev
> Changeset = 603eab147248 (yt) tip
>
>
> -------------------------------------------------------
>
> Data = standard Flash Sedov test.
>
>
> Any idea what I may be doing wrong?
>
>     Thanks,
>       Mateusz
>
>
>
>
>
>
>
>
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>
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