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# https://github.com/boschresearch/pylife
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# http://www.apache.org/licenses/LICENSE-2.0
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__author__ = "Johannes Mueller"
__maintainer__ = __author__
import pandas as pd
import numpy as np
from pylife import PylifeSignal
[docs]
@pd.api.extensions.register_dataframe_accessor("voigt")
class StressTensorVoigt(PylifeSignal):
'''DataFrame accessor class for Voigt noted stress tensors
Raises
------
AttributeError
if at least one of the needed columns is missing.
Notes
-----
Base class to access :class:`pandas.DataFrame` objects containing
Voigt noted stress tensors. The stress tensor components are assumed
to be in the columns `S11`, `S22`, `S33`, `S12`, `S13`, `S23`.
See also
--------
:func:`pandas.api.extensions.register_dataframe_accessor()`
Examples
--------
For an example see :class:`equistress.StressTensorEquistress`.
'''
def _validate(self):
self.fail_if_key_missing(['S11', 'S22', 'S33', 'S12', 'S13', 'S23'])