minimum row value and return the row

11 views (last 30 days)
i need to find a minimum row value in a matrix. eg
A=[12 64 76; 34 10 27; 9 8 20; 10 30 8]
And the desired output would be min value of row = [9 8 20] which is row number 3.
is there any function can do this? I noticed that min () function is used to find the minimum value in a row NOT minimum row value.
  1 Comment
Matthew Anderson
Matthew Anderson on 23 Feb 2016
This might be a little late, but the min(min()) function would do the trick

Sign in to comment.

Accepted Answer

Teja Muppirala
Teja Muppirala on 18 Jul 2013
Do you mean to say, you want the row with the minimum maximum value?
A=[12 64 76; 34 10 27; 9 8 20; 10 30 8];
[value,ind] = min(max(A,[],2));
A(ind,:)
ans =
9 8 20
Or
A = [ 7 9 5; 3 8 7; 4 5 6]
[value,ind] = min(max(A,[],2));
A(ind,:)
ans =
4 5 6
  1 Comment
azie
azie on 18 Jul 2013
Edited: azie on 18 Jul 2013
thanks teja. actually i dont understand how its works. but it works for my case. ur second choice. if u can explain what min max mean would be better.thanks. max(A,[],2) : what is 2 stands for?

Sign in to comment.

More Answers (3)

Roger Stafford
Roger Stafford on 18 Jul 2013
You have not told us what aspect of rows you are minimizing. I will guess you want the row index of the row with the least sum.
[c,ix] = min(sum(A,2));
The value 'c' is the minimum row sum and 'ix' is that row's index.
  1 Comment
azie
azie on 18 Jul 2013
the value for each column can't be sum up.each column is different. just need the lowest row value.

Sign in to comment.


James Tursa
James Tursa on 18 Jul 2013
Edited: James Tursa on 18 Jul 2013
If you want row that contains the minimum value (it is not clear to me what "minimum row" means):
[x xi] = min(A(:));
xij = ind2sub(xi,size(A));
minrow = A(xij(1),:);
  3 Comments
James Tursa
James Tursa on 18 Jul 2013
Can you please define what "minimum row" means? What is the minimum row of the following matrix (and why)?
[ 7 9 5;
3 8 7;
4 5 6]
azie
azie on 18 Jul 2013
Edited: azie on 18 Jul 2013
the minimum row value will be [4 5 6]. the minimum value that we can get in a row.

Sign in to comment.


Heba Khaled
Heba Khaled on 16 May 2021
how to get the minimum value of particular rows in matlab

Community Treasure Hunt

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

Start Hunting!