how to find min or max value in each row of a matrix and its index, if a matrix is 3x2 it will find the min in first row

22 次查看（过去 30 天）
Bashir Yusuf Bichi
Bashir Yusuf Bichi 2017-11-7
评论： madhan ravi 2020-8-6
R= [27 25 21; 35 38 37; 42 47 49]; 1st min value will be 21

请先登录，再回答此问题。

采纳的回答

Mischa Kim
Mischa Kim 2017-11-7
编辑：Mischa Kim 2017-11-7
Use
[val,loc] = min(R')
val =
21 35 42 % min value in each row
loc =
3 1 1 % column location of min value
  4 个评论
显示 2更早的评论
Fahim MUMAND
Fahim MUMAND 2019-10-14
suppose a matrix R = ones(4,4)
Every element is maximum and minimum, how to extract their indices?
How to extract the indices of max or min if there are more than 1 in col and in row?

请先登录，再进行评论。

更多回答（1 个）

Ariunbolor Purvee
编辑：Ariunbolor Purvee 2020-8-6
absDiff=[1 2 3; 4 5 6; 7 8 9; 9 10 12];
MaxMinAveRow= MaxMinAveOfRow(absDiff);
display(MaxMinAveRow);
function MaxMinAveRow= MaxMinAveOfRow(absDiff)
n=length(absDiff);
maxRow=zeros(n,1);
minRow=zeros(n,1);
aveRow=zeros(n,1);
sum=0;
for i=1:n
maxRow(i)=sum+max(absDiff(i,:));% max of row
minRow(i)=sum+min(absDiff(i,:));% min of row
aveRow(i)=sum+mean(absDiff(i,:));% average of row
end
MaxMinAveRow=[ maxRow,minRow, aveRow ];
end
The result on Command Window
MaxMinAveRow =
3.0000 1.0000 2.0000
6.0000 4.0000 5.0000
9.0000 7.0000 8.0000
12.0000 9.0000 10.3333

类别

在 Help Center 和 File Exchange 中查找有关 Matrix Indexing 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