写好 MATLAB 的函数文档
The second line of a function file is called the H1 (help 1) line. It should be a comment line of a special form: a line beginning with a
%character, followed without any space by the function name in capital letters, followed by one or more spaces and then a brief description. The description should begin with a capital letter, end with a period, and omit the words “the” and “a”.
%SVD Singular value decomposition. % 函数名大写，与'%'之间不留间距 % [U,S,V] = SVD(X) produces a diagonal matrix S, of the same % 文中使用函数名时需大写 % dimension as X and with nonnegative diagonal elements in % decreasing order, and unitary matrices U and V so that % X = U*S*V'. % % S = SVD(X) returns a vector containing the singular values. % 标明函数的使用方法，每段之间空一行 % % [U,S,V] = SVD(X,0) produces the "economy size" % decomposition. If X is m-by-n with m > n, then only the % first n columns of U are computed and S is n-by-n. % For m <= n, SVD(X,0) is equivalent to SVD(X). % % [U,S,V] = SVD(X,'econ') also produces the "economy size" % decomposition. If X is m-by-n with m >= n, then it is % equivalent to SVD(X,0). For m < n, only the first m columns % of V are computed and S is m-by-m. % % See also SVDS, GSVD. % 最后一行可以链接相关函数，函数名大写 % Copyright 1984-2005 The MathWorks, Inc. % 空行隔开，已不算文档字符串 % Built-in function.