MATLAB: Extract 5 highest value of a vector

extractindices

If I want to extract the indices of the 5 highest value of a avg vector (30×1 for example) how can I do?

ind = find(avgDE… )

Best Answer

[a,ii] = sort(avgDE,'descend');
outidx = ii(1:5);

Related Solutions

MATLAB: Highest frequency

Please try the mode function:

   x = mode(A);

HTH.

MATLAB: Selecting the highest value

I don't understand why the first row of your result is not

1  2    03     .6    98

as 98 is bigger than 90. Assuming you've made a mistake, the following code works, though there may, as ever, be neater methods:

data = [1  3   .5      .6    89
    1  2    03     .6    98
    1  8   .3      .3    90
    2  3   .2      .5    87
    2  87   02      1    89
    10  12  01      .3    87
    10  12  03       07   99
    10  0.3 0.5      10    78];
indexcol = 1;
valuecol = 5;
indexlist = data(:,indexcol);
indexes = unique(indexlist);
results = zeros(length(indexes), size(data,2));
for k = 1:length(indexes)
    rows = find(indexlist == indexes(k));
    [unused, maxsubsetrow] = max(data(rows, valuecol));
    maxrow = rows(maxsubsetrow);
    results(k, :) = data(maxrow, :);
end
disp(results);

Best Answer

Related Solutions

MATLAB: Highest frequency

MATLAB: Selecting the highest value

Related Question