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v2007.09.13 - Convex Optimization

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648 APPENDIX F. MATLAB PROGRAMSend% find generating listr = max(find(chop(diag(Evals),...max(tolerance_in,eps*N*normest(VDV))) > 0));if isempty(r)r = 0;endif nargin < 4 | isempty(dim)dim = r;elsedim = round(dim);endt = r;r = min(r,dim);if r == 0X = zeros(1,N);elseif strcmp(use,’Vn’)X = [zeros(r,1) diag(sqrt(diag(Evals(1:r,1:r))))*Evecs(:,1:r)’];elseX = [diag(sqrt(diag(Evals(1:r,1:r))))*Evecs(:,1:r)’]/sqrt(2);endendif strcmp(isisnot,’isnot’) | dim < tDclosest = Dx(X);elseDclosest = D;end

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