No such file or directory: 'out-ENGPTHDO\\0\\pset_info.npy'

[keli559]

Trying to follow the tutorial of https://nbviewer.org/github/OceanParcels/parcels/blob/master/parcels/examples/tutorial_nemo_3D.ipynb
to do a 3D particle tracking.
However, at the end, how do we save the particle data?

Why do I get the following error when running
savePartFn = '3d_part.nc'
output_file = pset.ParticleFile(name=savePartFn, outputdt=timedelta(hours=6))
output_file.export()
plotTrajectoriesFile(savePartFn)

the code above was working for the 2D tracking.
Thanks

---

FileNotFoundError Traceback (most recent call last)
Cell In [71], line 3
1 savePartFn = '3d_part.nc'
2 output_file = pset.ParticleFile(name=savePartFn, outputdt=timedelta(hours=6))
----> 3 output_file.export()
4 plotTrajectoriesFile(savePartFn)
File ~\Miniconda3\envs\py3_parcels\lib\site-packages\parcels\particlefile\particlefilesoa.py:147, in ParticleFileSOA.export(self)
145 for tempwritedir in temp_names:
146 if os.path.exists(tempwritedir):
--> 147 pset_info_local = np.load(os.path.join(tempwritedir, 'pset_info.npy'), allow_pickle=True).item()
148 for npyfile in pset_info_local['file_list']:
149 with gzip.open(npyfile, 'rb') as f:
File ~\Miniconda3\envs\py3_parcels\lib\site-packages\numpy\lib\npyio.py:390, in load(file, mmap_mode, allow_pickle, fix_imports, encoding)
388 own_fid = False
389 else:
--> 390 fid = stack.enter_context(open(os_fspath(file), "rb"))
391 own_fid = True
393 # Code to distinguish from NumPy binary files and pickles.
FileNotFoundError: [Errno 2] No such file or directory: 'out-ENGPTHDO\\0\\pset_info.npy'

[keli559]

I rerun the code from .py file. it is really the line:
out = pset.ParticleFile(name='3d_part.nc', outputdt=delta(hours=1))
that gives this error:
FileNotFoundError: [Errno 2] No such file or directory: 'out-ENGPTHDO\\0\\pset_info.npy'

[keli559]

Figured it out myself.
need to add output_file = output_file
at the end of pset.execute
that is the following code:
output_file = pset.ParticleFile(name=savePartFn, outputdt=timedelta(hours=1)) # the file name and the time step of the outputs
pset.execute(kernels, runtime=delta(days=10), dt=delta(hours=6), output_file=output_file)