# Talk:Chromosome structure via Euclidean Distance Matrices

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Revision as of 22:46, 6 August 2008 by 66.92.48.168 (Talk)

%%% Ronan Fleming, E.coli molecule data %%% -Jon Dattorro, August 2008 clear all load ecoli frame = 12; % 1 through 12 G = her49imfs12movfull(frame).cdata; % uint8 G = (double(G)-128)/128; % Gram matrix N = size(G,1); D = diag(G)*ones(N,1)' + ones(N,1)*diag(G)' - 2*G; % EDM D clear her49imfs12movfull G; Vn = [-ones(1,N-1); speye(N-1)]; VDV = (-Vn'*D*Vn)/2; clear D Vn [evec evals flag] = eigs(VDV, [], 20, 'LR'); if flag, disp('convergence problem'), return, end; close all Xs = sqrt(real(evals(1:3,1:3)))*real(evec(:,1:3))'; % Projection of -VDV on PSD cone rank 3 plot3(Xs(1,:), Xs(2,:), Xs(3,:), '.')