Min of each row of a matrix and their indexes

I have the topography data in which I introduced X, Y, Z as follows. How can I find min for each row of Z data and find their X and Y value?

Answer 1

[Andrei Bobrov]

X=[11 13 15]
Y=[43 45 47]
Z = [27 25 21;35 38 37 ;42 47 49]
[~,ii] = min(Z,[],2)
out = [X(ii)',Y(:)]

Answer 2

[Geoff Hayes]

Babak - if you want to find the minimum of each row of Z then use min as follows

 >> Z = [27 25 21; 35 38 37; 42 47 49];
 >> min(Z,[],2)  

 ans =

    21
    35
    42

To get the index of each of the above then do

 >> [minValues, minIndices] = min(Z,[],2)

 minValues =

    21
    35
    42

 minIndices =

     3
     1
     1

Presumably, your x and y coordinates for these values would then be

 X(minIndices)
 Y(minIndices)