清空筛选条件
清空筛选条件

Find maximum difference between two arrays

24 次查看（过去 30 天）
Joe Cousins
Joe Cousins 2023-10-6
编辑： Dyuman Joshi 2023-10-21
I have to arrays of the same size 1x101, how can I find the absolute maximum difference between the arrays?
This is what I tried but it is giving me the incorrect answer:
[m] = max( abs( A(1,101) - B(1,101) ))
  1 个评论
Dyuman Joshi
Dyuman Joshi 2023-10-6
编辑：Dyuman Joshi 2023-10-21
Because the code compares a single element i.e. (1,101), not the whole vectors.
Use this -
m = max(abs(A-B.'),[],'all');
For more information, refer to - Compatible Array Sizes for Basic Operations
Array vs Matrix Operations
bsxfun and Implicit Expansion

请先登录，再进行评论。

请先登录，再回答此问题。

回答（1 个）

Bruno Luong
Bruno Luong 2023-10-6
编辑：Bruno Luong 2023-10-6
Ran in:
No need to compare all the pairs
A = randn(1,101);
B = randn(1,101);
dmaxBruteForce = max(abs(A-B.'),[],'all')
dmaxBruteForce = 5.1894
dmaxSmart = max(abs([max(B)-min(A), max(A)-min(B)]))
dmaxSmart = 5.1894

类别

在 Help Center 和 File Exchange 中查找有关 Operators and Elementary Operations 的更多信息

标签

Community Treasure Hunt

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

Start Hunting!

Translated by