ReadMagField:

Path: SC/Environs

% Read in the magnetic field from a file.
   The file should be in the form:

            n         m        g(n,m)        h(n,m)                              
       -------------------------------------------------------------------       
            1         0       0.09732       0.0                                           
            1         1       0.03220      -0.09889                             
            2         0       0.07448       0.0                                             
            2         1       0.00664       0.11230 

   The function assumes that there isn't a header. There is a demo that
   loads the field of Neptune from 'NeptuneMagField.txt.
   
--------------------------------------------------------------------------
   Form:
   [g, h] = ReadMagField( fileName )
--------------------------------------------------------------------------

   ------
   Inputs
   ------
   fileName   (1,:)   Text file

   -------
   Outputs
   -------
   g           (n,n)  G coefficients
   h           (n,n)  H coefficients

--------------------------------------------------------------------------

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