See if this does what you want:
V = (1:18)'; % Original Vector
Vr = reshape(V, 3, []); % Reshape To (3xN) Matrix
idx = nchoosek(1:3,2); % Create Index Permutations - Half
idx = [idx; fliplr(idx)]; % Create Index Permutations - All
hax = axes('NextPlot', 'add');
for k1 = 1:size(Vr,2)
plot(hax, Vr(idx(:,1), k1), Vr(idx(:,2), k1), 'p')
end
I used a linear vector to test the code, so after you run this to be certain if it produces the result you want, substitute your own vector for ‘V’. (The length of your vector is evenly divisible by 3, so my code here should work with your column vector.) I plotted them all on the same axes.
