matlab norm函数使用

matlab norm函数使用

满意答案

szlan1226

2013.09.04

采纳率：58%    等级：12

已帮助：7961人

求矩阵或向量的模

NORM Matrix or vector norm.

NORM(X) is the largest singular value of X, max(svd(X)).

NORM(X,2) is the same as NORM(X).

NORM(X,1) is the 1-norm of X, the largest column sum,

= max(sum(abs(X))).

NORM(X,inf) is the infinity norm of X, the largest row sum,

= max(sum(abs(X'))).

NORM(X,'fro') is the Frobenius norm, sqrt(sum(diag(X'*X))).

NORM(X,P) is available for matrix X only if P is 1, 2, inf or 'fro'.

NORM(V,P) = sum(abs(V).^P)^(1/P).

NORM(V) = norm(V,2).

NORM(V,inf) = max(abs(V)).

NORM(V,-inf) = min(abs(V)).

110分享举报