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获取 Matlab 函数的路径
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获取 Matlab 函数的路径
第一步，which函数可用来获取 Matlab 函数的全路径（包含路径和文件名）。
>> a = which('startup')
a =
D:\Program Files\MATLAB\toolbox\local\startup.m
若在函数内部要获取自己的全路径，也可以使用mfilename函数：
a = mfilename('fullpath');
% a = 'D:\Program Files\MATLAB\toolbox\local\startup'
注意 mfilename 返回的值不带文件类型后缀。
第二步，使用fileparts函数将全路径分解为路径、文件名、文件后缀三部分：
>> [file_path, file_name, file_type] = fileparts(a) file_path = D:\Program Files\MATLAB\toolbox\local file_name = startup file_type = .m
题外话，fullfile是fileparts的反面:
full_path = fullfile(file_path, [file_name, file_type])
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