DocumentNTF(arg1,osr,f0,quadr...axis_handle = DocumentNTF(ntf|ABCD|mod_struct,osr=64,f0=0,quadrature=0) Plot the NTF's poles and zeros as well as its frequency-response
ESLselect(v,sy,dw,df)sv = ESLselect(v,sy,dw,df) Select the elements of a multi-element
function y=nabsH(w,H)
% nabsH computes the negative of the absolute value of H
% at the specified frequency on the unit circle.
%
% This function is used by infnorm.m.
z = exp(i*w);
y = -abs(evalTF(H,z));