How do I create a 1x21 matrix where the inputs are all the different values of d

B=[1 2 3 4 5 6 7; 9 11 13 15 17 19 21];

for i=1:7
    for j=1:7
        if i>j
P=B(:,i);
Q=B(:,j);
Norm=zeros(1,nchoosek(7,2));
d=norm(P-Q)
k=1:nchoosek(7,2);
Norm(:,k)=d
        end
    end
end

Answer 1

[the cyclist]

Does this code do what you had intended? (There was some guesswork on my part.)

B=[1 2 3 4 5 6 7; 9 11 13 15 17 19 21];

Norm=zeros(1,nchoosek(7,2));

k = 0;

for i=1:7
for j=1:7
    if i>j
        k = k+1;
        Norm(k) = norm(B(:,i)-B(:,j));
    end
end
end

[Romina]

Yes! Thank you very very much!!!

[the cyclist]

Great. I suggest you carefully compare my code with yours, to understand the things that I did differently.