Mean of highest n numbers for each row in a matrix

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Ulrik Nash 2011-7-15

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

Sean de Wolski 2011-7-15

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

Friedrich 2011-7-15

Litle typo:

A = sort(Matrix,2,'descend');

Sean de Wolski 2011-7-15

In your words, doh!

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