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Invert a Mosel matrix with NumPy Description Invert a Mosel matrix in Python using NumPy. Further explanation of this example: see Chapter 'Python' in the 'Mosel Language Reference Manual'
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Data Files invert_matrix.py #!/usr/bin/env python # -*- coding: utf-8 -*- # ********************************************************* # Mosel Python Example Problems # ============================= # # file invert_matrix.py # ````````````````````` # Invert a Mosel matrix in Python using pandas and NumPy. # # (c) 2019 Fair Isaac Corporation # author: J. Müller # ********************************************************* import platform import numpy as np import pandas as pd from numpy.linalg import inv def invert_matrix(series): """ Compute inverse matrix of a Series with a two-dimensional index. Parameters ---------- series : pandas.Series Series with a two-dimensional zero based integer index. Returns ------- NumPy.ndarray Inverse matrix as two-dimensional NumPy ndarray. """ # Get pivot table of MultiIndex Series as DataFrame. df = series.unstack() # Compute inverse matrix. np_a_inverse = inv(df) print(np_a_inverse) # Return result as NumPy ndarray. return np_a_inverse if __name__ == "__main__": print("Python library version: ", platform.python_version()) print("NumPy library version: ", np.__version__) print("pandas library version: ", pd.__version__) | |||||||||||
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