Hi Hannah, I think this is possible! What I'm not sure of is the right place to implement it. Your line numbers don't agree with mine so I can't figure out specifically what is throwing the type error, *but*, I think it might be the number of files. Can you try looking at the contents of ds.file_count and see if that is 0?
On Fri, Apr 26, 2024 at 8:10 AM hannah.obrennan.2021--- via yt-users < [email protected]> wrote: > I am loading an existing halo catalog to create a DataSet object: > > import yt > ds = yt.load("test_halo_catalog.h5") > > I then wish to use the all_data() method: > > ad = ds.all_data() > > But if the halo catalog contains zero halos, I get this error message: > > > yt : [INFO ] 2024-04-26 14:06:04,162 Allocating for 0.000e+00 particles > Traceback (most recent call last): > File "~/hc_analysis.py", line 130, in <module> > ad = ds.all_data() > File > "/home/hannah/anaconda3/envs/yt-rockstar/lib/python3.10/site-packages/yt/data_objects/static_output.py", > line 1122, in all_data > self.index > File > "/home/hannah/anaconda3/envs/yt-rockstar/lib/python3.10/site-packages/yt/data_objects/static_output.py", > line 559, in index > self._instantiated_index = self._index_class( > File > "/home/hannah/anaconda3/envs/yt-rockstar/lib/python3.10/site-packages/yt/geometry/particle_geometry_handler.py", > line 27, in __init__ > self._initialize_index() > File > "/home/hannah/anaconda3/envs/yt-rockstar/lib/python3.10/site-packages/yt/geometry/particle_geometry_handler.py", > line 164, in _initialize_index > self.regions = ParticleBitmap( > File "yt/geometry/particle_oct_container.pyx", line 476, in > yt.geometry.particle_oct_container.ParticleBitmap.__init__ > TypeError: an integer is required > > > It seems that all_data() only works if the halo catalog contains a nonzero > integer number of halos. > Is there a method for a DataSet object to determine the total number of > halos found? > I wish to implement something like this: > > if ds.total_halos != 0: > ad = ds.all_data() > > else: > print("No halos found in this halo catalog") > > Any help would be much appreciated, thank you! > Kind regards, > Hannah O'Brennan > _______________________________________________ > yt-users mailing list -- [email protected] > To unsubscribe send an email to [email protected] > https://mail.python.org/mailman3/lists/yt-users.python.org/ > Member address: [email protected] >
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