Sum matrix from n=1 to n

Hello,

I have E matrix which is 24*3*4. I want to sum the maximum values that corresponding to a specify (n). lets say i want to sum different number of maximum values of each row. for example, the first row of E(1,1:3,1:4)=

ans(:,:,1) =

31 32 33

ans(:,:,2) =

21 22 23

ans(:,:,3) =

71 72 73

ans(:,:,4) =

51 52 53

now i want to sum the the two maximum values of 1 which are 33 , 32 and the maximum value of 2 which is 23 and two maximum values of 3 which are 73,72 and the three maximum values of 4 which are 51,52,53. So, the result should be a matrix which diminsion is (24*1*4) and look like

ans(:,:,1) =

65

ans(:,:,2) =

23

ans(:,:,3) =

145

ans(:,:,4) =

156

Any thought of how i can do that . Many thanks :)

[Image Analyst]

I'd guess sort() and sum() would be involved. But make it easy for people to help you, not hard -- attach "E" in a .mat file

save('answers.mat', 'E');

Then attach answers.mat with the paper clip icon.

[Mohammed Alruwaili]

Tthank you. I have attached the matrices in .m file

Answer 1

[Ameer Hamza]

Try this

m = [2 1 2 3];
out = zeros(size(EGSE_bat,1), 1, size(EGSE_bat,3));

for i = 1:size(EGSE_bat,3)
    out(:,:,i) = sum(maxk(EGSE_bat(:,:,i), m(i), 2), 2);
end

[Mohammed Alruwaili]

Thank you, thats work

[Ameer Hamza]

I am glad to be of help!