e norm of the nominal value of H. During the computation, if wcnorm determines that the worst-case norm is at least
then the calculation is terminated. In our case, since H.NominalValue equals 0, the stopping criteria is governed by ABadThreshold. The default value of ABadThreshold is 5. To keep wcnorm from prematurely stopping, set ABadThreshold to 38 (based on our crude upper bound above).
opt = wcgopt('ABadThreshold',38); [maxKappa,wcu,info] = wcnorm(H,opt); maxKappa maxKappa = LowerBound: 26.9629 UpperBound: 27.9926
You can verify that wcu makes the condition number as large as maxKappa.LowerBound.
cond(usubs(M,wcu)) ans = 26.9629