It would be helpful to see all the relevant code.
However on the basis of what you posted, taking the mean of ‘ind’ is going to take the mean of the logical vector, so the result is going to be between 0 and 1, since logical values become numeric when used in other numeric calculations. The calculation of ‘ind’ may also not be correct, although the full code for it is not presented.
Try this:
A = sortrows(rand(25,3),1); % Create ‘A’
x = A(:,1);
y = A(:,2);
ind = y >= 0.4 & y <= 0.6;
yindmean = mean(y(ind));
That should do what you want.
