MATLAB: Extracting a value from one column to its corresponding column

Question

Hi, I have a matrix (say 7 x 2). first column contains id and second column contains scores. I want to write a code to extract id from first column which is corresponding to minimum score in second column?

M = 1  363.026
11  330.302
24  289.07
55  240.3120
59  188.209
79  162.937
87  108.104

I know 87 has lowest score. But how to write effective code so that for larger matrix it should fetch id corresponding to lowest score? Thanks

Answer 1

[val,idx] = min(M(:,2)) ;   % get minimum value and position from scores
id = M(idx,1) ;   % get the id of the minimum score