Numerical error using the "diff" function

2021 2 22
1 个回答
回答已采纳
更新时间：2021 2 22
9 次查看（30 天）

0 个投票

I want to determine the max difference between adjacent entries of a vector.
vector = [0 0 0 0.2 0.4 0.6 0.7 0.85 1 1 1];
difference = diff(vector);
i=find(diff(vector) == max(diff(vector)))
For the exemplary vector I would expect the following output:
i =
3 4 5
However, I get:
i =
3 4
The third one is missing. Checking this value, indeed I see some numerical error which should not be there.
Do I really have to use an almost equal function in order to solve this issue?

请先登录，再回答此问题。

 采纳的回答

Stephen23
Stephen23 2021-2-22
Ran in:

0 个投票

Ran in:
V = [0,0,0,0.2,0.4,0.6,0.7,0.85,1,1,1];
D = diff(V);
X = find(ismembertol(D,max(D)))
X = 1×3
3 4 5

更多回答（0 个）

类别

在 帮助中心 和 File Exchange 中查找有关 Get Started with MATLAB 的更多信息

产品

版本

R2019b

标签

Community Treasure Hunt

Find the treasures in MATLAB Central and discover how the community can help you!

Start Hunting!

Translated by