Getting the entry value (i,j) for the minimum value of reach row of a matrix

Suppose I have a matrix

A = 3×3

11 13 15

12 14 16

32 18 21

How do I get the output (1,1) (2,1) and (1,3) which indicate the position of the minimum value of each row.

Answer 1

[Voss]

A=[11    13    15
    12    14    16
    32    18    21];

[minrow,idx] = min(A,[],2) % min value of each row, with column index

minrow = 3×1

11 12 18

idx = 3×1

1 1 2

result = [(1:size(A,1)).' idx] % 18 is at (3,2) not (1,3)

result = 3×2

1 1 2 1 3 2

[Wietze Zijpp]

Thank you, this is what I was looking for

[Voss]

You're welcome!

Answer 2

[Arif Hoq]

may be you are looking for this:

A=[11    13    15
    12    14    16
    32    18    21];
mincol=min(A)  % min value of each column

mincol = 1×3

11 13 15

minrow= min(A,[],2) % min value of each row

minrow = 3×1

11 12 18

[Wietze Zijpp]

This does give the minimum value. However, I am interested in the entry at which this number is displayed

[Arif Hoq]

if you want fine the row,column of minimum of each row, then

A=[11    13    15
    12    14    16
    32    18    21];
mincol=min(A)  % min value of each column

mincol = 1×3

11 13 15

minrow= min(A,[],2) % min value of each row

minrow = 3×1

11 12 18

[row col]=find(ismember(A,minrow)) 

row = 3×1

1 2 3

col = 3×1

1 1 2

% here A(1,1)=11 >> A(2,1)=12 >> A(3,2)=18

[Wietze Zijpp]

This is what I was looking for, thank you.