National Instruments NI MATRIXx Xmath - Manual (Page 112)

Chapter 6 Tutorial
© National Instruments Corporation 6-17 Xmath Model Reduction Module
Generate Figure 6-13:
[syscr,sysclr,hsv] = wtbalance(sys,sysc,
"input spec",2,sysv)
svalsrol = svplot(sys*syscr,w,{radians})
plot(svalsol, {keep})
f13=plot(wc,constr,{keep, !grid,
legend=["reduced","original","constrained"],
title="Open-Loop Gain with wtbal(), \"input spec\""})
Figure 6-13. Open-Loop Gain from wtbalance with "input spec"