mvnyq.m

来自「MFD－多变量系统频域设计工具」· M 代码 · 共 25 行

function mvnyq(w,f,index)
%MVNYQ  Plot Multi-Variable Nyquist diagram.
%       MVNYQ(W,F,INDEX) plots the elements of the MVFR
%       matrix, F, specified by INDEX on a Nyquist diagram
%       and marks the plots with the frequency points.
%
%       INDEX is an optional argument which is a two
%       column matrix whose rows specify the elements
%       of F to be plotted.
%       If INDEX is missing all the elements are plotted.
%
%       See also MKNYQ,MVBODE,MVNIC,PLOTNYQ

%       Dr M.P. Ford 4th August 1987
% Copyright (c) 1987 by GEC Engineering Research Centre & Cambridge Control Ltd

if nargin == 3
   f=fget(w,f,index);
else
   f=fget(w,f);
end
plotnyq(f)
mknyq(f,w)