minimum row value and return the row

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azie
azie 2013-7-18
回答： Heba Khaled 2021-5-16
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 个评论
Matthew Anderson
Matthew Anderson 2016-2-23
This might be a little late, but the min(min()) function would do the trick

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采纳的回答

Teja Muppirala
Teja Muppirala 2013-7-18
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 个评论
azie
azie 2013-7-18
编辑：azie 2013-7-18
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?

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更多回答（3 个）

Roger Stafford
Roger Stafford 2013-7-18
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 个评论
azie
azie 2013-7-18
the value for each column can't be sum up.each column is different. just need the lowest row value.

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James Tursa
James Tursa 2013-7-18
编辑：James Tursa 2013-7-18
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 个评论
显示 1更早的评论
James Tursa
James Tursa 2013-7-18
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 2013-7-18
编辑：azie 2013-7-18
the minimum row value will be [4 5 6]. the minimum value that we can get in a row.

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Heba Khaled
Heba Khaled 2021-5-16
how to get the minimum value of particular rows in matlab

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