file_name : {string, file-like object}
Name of the mat file (do not need .mat extension if
appendmat==True) Can also pass open file-like object
m_dict : dict
dictionary from which to save matfile variables
appendmat : {True, False} optional
True to append the .mat extension to the end of the given
filename, if not already present
format : {‘5’, ‘4’} string, optional
‘5’ for matlab 5 (up to matlab 7.2)
‘4’ for matlab 4 mat files
long_field_names : boolean, optional, default=False
- False - maximum field name length in a structure is 31 characters
which is the documented maximum length
- True - maximum field name length in a structure is 63 characters
which works for Matlab 7.6
do_compression : {False, True} bool, optional
Whether to compress matrices on write. Default is False
oned_as : {‘column’, ‘row’} string, optional
If ‘column’, write 1D numpy arrays as column vectors
If ‘row’, write 1D numpy arrays as row vectors
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