what is the equivalent matlab function for the operator || || ?

mari pavithra

2015 3 月 14

1 回答

回答採用済み

4 ビュー (30 日間)

0 投票

I am having an expression r=||x-Ab|| which I have to convert it into a matlab code.But i have no idea what is this || || operator.can anyone tell me what does it mean and what is the equivalent matlab fuction for it.

1 件のコメント
-1 件の古いコメントを表示 -1 件の古いコメントを非表示

Geoff Hayes 2015 年 3 月 14 日

mari - please provide some context for this operator. What does it mean to you? What goes between the two pairs of vertical bars?

サインインしてコメントする。

サインインしてこの質問に回答する。

Follow Question

採用された回答

Andrew Newell 2015 年 3 月 14 日

編集済み: Andrew Newell 2015 年 3 月 14 日

MATLAB Online で開く

0 投票

You're probably referring to the matrix norm, which is a generalization of the idea of "distance". The equivalent MATLAB function is norm. If there is no subscript on your operator symbol, it probably represents the 2-norm, which is the default for the MATLAB function. For your example, you could write

r = norm(x-A*b);