How do I confront the value of a matrix?

Hi, I have a matrix 21x6

I have for rows 16:20 confront the column:

for example for the first rows to analyze: (ROW 16)

(Column 4 - Column 1) / 12 = x

(Column 5 - Column 2) / 12 = y

(Column 6 - Column 3) / 12 = z

(x+y+z):3=value16

And after each rows I need the mean of the value printed

Answer 1

[DGM]

I'm not really sure what this is supposed to mean.

%(x+y+z):3=value16

What guarantees that the sum of x,y,z is less than 3?

I guess you can start with this:

% test array
A = randi(9,21,6)

% get all xyz, sum
xyz = sum((A(16:20,4:6) - A(16:20,1:3))/12,2)

% expand and take mean
mn = zeros(size(xyz));
for r = 1:size(xyz,1)
    mn(r) = mean(xyz(r):3);
end

mn