MATLAB: Mean of highest n numbers for each row in a matrix

Question

Hi Everyone,

Suppose I have a matrix A, which has r rows and c columns.

For each of the rows A, I wish to find the mean of the highest n numbers, to create B, which is a 1,c matrix, containing these means.

How can this be done?

Regards

Ulrik

Answer 1

A = sort(Matrix,2,'descend');  %sort it so big numbers first
B = mean(A(:,1:n),2) %mean them