MATLAB: Calling text file in matlab

prediction accuracy

if i have text file that has three column say
                                           1 2 1
                                           3 1 1
                                           2 3 1
and also have a matrix s =
                    [0.3  0.4   0.6
                     0.1  0.5  0.7
                     0.2  0.11  0.9]
firstly: with respect to text file, i want to consider first column as i and second column as j then if the third column equal 1 then put its corresponding value in matrix s in new array say A else put remaining value in matrix s in new another array say B.
i.e i want this result
A=[0.4, 0.2, 0.7] B=[0.3, 0.6, 0.1, 0.5, 0.11, 0.9]

Best Answer

ii = [1 2 1
3 1 1
2 3 1];
s = [0.3  0.4   0.6
0.1  0.5  0.7
0.2  0.11  0.9];
[x,y,z] = size(s);
ij = num2cell(ii,1);
idx = sub2ind([x,y,z],ij{:});
A = s(idx);
B = s(setdiff(1:numel(s),idx));
Related Question