umat_mean.py

"""
This function takes a mean of several umatricies calculated with np.mean and recasts it as a unumpy umatrix.

Suppose c1, c2, c3 are all matricies with uncertainties. np.mean([c1,c2,c3],axis=0) will return an array, but the errors and the nominal values cannot be called anymore. This simple function recasts the array as a umatrix so it can be manipulated in the same way.

Copyright 2019 Matthew Heffernan <heffernan@physics.mcgill.ca>

Permission is hereby granted, free of charge, to any person obtaining a copy 
of this software and associated documentation files (the "Software"), to deal 
in the Software without restriction, including without limitation the rights 
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THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR 
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"""

import numpy as np
from uncertainties import unumpy

def umatmean(mat):
    
    sizex, sizey = mat.shape
    nom = np.zeros(mat.shape)
    stdvs = np.zeros(mat.shape)
    
    for i in range(sizex):
        for j in range(sizey):
            nom[i][j] = mat[i][j].n
            stdvs[i][j] = mat[i][j].s
    
    umat = unumpy.umatrix(nom,stdvs)
    
    return umat