Pointwise peak gain of FRD model
fnrm = fnorm(sys)
fnrm = fnorm(sys,ntype)
fnrm = fnorm(sys) computes the pointwise
2-norm of the frequency response contained in the FRD model
that is, the peak gain at each frequency point. The output
an FRD object containing the peak gain across frequencies.
fnrm = fnorm(sys,ntype) computes the frequency
response gains using the matrix norm specified by
norm for valid matrix
norms and corresponding NTYPE values.