KeyError: 'SigmaVelocity_n'

Using SimScale
1

Dears,

I’m currently trying to hook up SimScale to Grasshopper following the documentation on the git:

Unfortunately once I try to run the component in Grasshopper I get his error message:

Runtime error (PythonException): Traceback (most recent call last):
  File "c:\program files\python37\lib\site-packages\pandas\core\indexes\base.py", line 3361, in get_loc
    return self._engine.get_loc(casted_key)
  File "pandas\_libs\index.pyx", line 76, in pandas._libs.index.IndexEngine.get_loc
  File "pandas\_libs\index.pyx", line 108, in pandas._libs.index.IndexEngine.get_loc
  File "pandas\_libs\hashtable_class_helper.pxi", line 5198, in pandas._libs.hashtable.PyObjectHashTable.get_item
  File "pandas\_libs\hashtable_class_helper.pxi", line 5206, in pandas._libs.hashtable.PyObjectHashTable.get_item
KeyError: 'SigmaVelocity_n'

The above exception was the direct cause of the following exception:

Traceback (most recent call last):
  File "c:\program files\python37\lib\runpy.py", line 193, in _run_module_as_main
    "__main__", mod_spec)
  File "c:\program files\python37\lib\runpy.py", line 85, in _run_code
    exec(code, run_globals)
  File "C:\Program Files\Python37\Scripts\simscale-eba.exe\__main__.py", line 7, in <module>
  File "c:\program files\python37\lib\site-packages\click\core.py", line 829, in __call__
    return self.main(*args, **kwargs)
  File "c:\program files\python37\lib\site-packages\click\core.py", line 782, in main
    rv = self.invoke(ctx)
  File "c:\program files\python37\lib\site-packages\click\core.py", line 1259, in invoke
    return _process_result(sub_ctx.command.invoke(sub_ctx))
  File "c:\program files\python37\lib\site-packages\click\core.py", line 1066, in invoke
    return ctx.invoke(self.callback, **ctx.params)
  File "c:\program files\python37\lib\site-packages\click\core.py", line 610, in invoke
    return callback(*args, **kwargs)
  File "c:\program files\python37\lib\site-packages\simscale_eba\cli\download_pwc_results.py", line 33, in download_pwc_results
    sim._create_dimensional_quantities()
  File "c:\program files\python37\lib\site-packages\simscale_eba\PedestrianWindComfort.py", line 578, in _create_dimensional_quantities
    df = nd.csv_to_dimensionall_df(self, table, variables)
  File "c:\program files\python37\lib\site-packages\simscale_eba\post_processing\NonDimensionalQuantities.py", line 70, in csv_to_dimensionall_df
    result = tke_total(df)
  File "c:\program files\python37\lib\site-packages\simscale_eba\post_processing\NonDimensionalQuantities.py", line 330, in tke_total
    return tke_resolved(df) + tke_modeled(df)
  File "c:\program files\python37\lib\site-packages\simscale_eba\post_processing\NonDimensionalQuantities.py", line 309, in tke_resolved
    sigma = df["SigmaVelocity_n"].to_numpy()
  File "c:\program files\python37\lib\site-packages\pandas\core\frame.py", line 3458, in __getitem__
    indexer = self.columns.get_loc(key)
  File "c:\program files\python37\lib\site-packages\pandas\core\indexes\base.py", line 3363, in get_loc
    raise KeyError(key) from err
KeyError: 'SigmaVelocity_n'


Traceback:
  line 57, in script

It downloads a bunch of files but I can’t visualize anything in Grasshopper.

image
image1397×963 33.3 KB

Did anyone have this issue before or could anyhow help me solving this problem?

Thanks in advance!

1 Like
2

Hello!

That’s a relatively unusual error message. Could you please provide a link to the project that you are having difficulties with? (shared with support)

Cheers

3

Hi Ricardo,
Thanks for your fast reply.

Here’s the link:
It’s a copy of the tutorial file.

1 Like
4

No problem.

That makes sense, this project is old and it’s missing some information that is necessary for the newer versions of the Grasshopper integration.

Could you try to make a copy of this newer project and use the run under the “Pedestrian Wind Comfort” simulation tree as a base?

image
image796×697 38.6 KB

This one should work.

Furthermore: did you find a link to that faulty project somewhere in the Git repo?

Cheers