SDEC plot from saved TARDIS simulation

[achillefiore]

Describe the bug
I cannot produce a static SDECplot in matplotlib using a saved TARDIS simulation (I can it in runtime though).

To Reproduce
once a TARDIS simulation 'sim' is saved in a hdf file doing:
sim.to_hdf( "filename.hdf", overwrite=True )
hdf_plotter = SDECPlotter.from_hdf( "filename.hdf" )
hdf_plotter.generate_plot_mpl()

File "/Users/achillefiore/Library/Mobile Documents/comappleCloudDocs/2021bnw/spectra/NIR/sdec_plotter.py", line 6, in SDEC
hdf_plotter = SDECPlotter.from_hdf( simulation )
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
File "/Users/achillefiore/miniconda3/envs/tardis/lib/python3.11/site-packages/tardis/visualization/tools/sdec_plot.py", line 482, in from_hdf
"virtual": SDECData.from_hdf(hdf_fpath, "virtual"),
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
File "/Users/achillefiore/miniconda3/envs/tardis/lib/python3.11/site-packages/tardis/visualization/tools/sdec_plot.py", line 263, in from_hdf
hdf["/simulation/transport/scalars"].time_of_simulation, "s"

File "/Users/achillefiore/miniconda3/envs/tardis/lib/python3.11/site-packages/pandas/io/pytables.py", line 602, in getitem
return self.get(key)
^^^^^^^^^^^^^
File "/Users/achillefiore/miniconda3/envs/tardis/lib/python3.11/site-packages/pandas/io/pytables.py", line 812, in get
raise KeyError(f"No object named {key} in the file")
KeyError: 'No object named /simulation/transport/scalars in the file'