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# https://github.com/boschresearch/pylife
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# Licensed under the Apache License, Version 2.0 (the "License");
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# http://www.apache.org/licenses/LICENSE-2.0
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'''
Mesh Mapping
============
Map values of one FEM mesh into another
'''
__author__ = "Johannes Mueller"
__maintainer__ = __author__
import scipy.interpolate as interp
import numpy as np
import pandas as pd
from pylife.mesh.meshsignal import PlainMesh
[docs]
@pd.api.extensions.register_dataframe_accessor('meshmapper')
class Meshmapper(PlainMesh):
"""Mapper to map points of one mesh to another
Notes
-----
The accessed DataFrame needs to be accessible by a :class:`PlainMesh`.
"""
[docs]
def process(self, from_df, value_key, method='linear'):
"""Performs the mapping
Parameters
----------
from_df : pandas.DataFrame accessible by a :class:`PlainMesh`.
The DataFrame that is to be mapped to the accessed one.
Needs to have the same dimensions (2D or 3D) as the accessed one
"""
crd = self._coord_keys
from_df.plain_mesh
newvals = interp.griddata(from_df[crd], from_df[value_key], self._obj[crd], method=method)
return pd.DataFrame({value_key: newvals}).set_index(self._obj.index)