% Use of the function lfr for defining Delta-blocks % A 4-by-4 scalar repeated block X = lfr('x','ltisr',4,[2 8],'minmax'); size(X) % A complex scalar uncertainty in the disc of center 1+i and radius 2.2 Y = lfr('y','ltisc',1,[1+i 2.2],'disc'); size(Y) % A full complex block with frequency weighted bounds Z = lfr('z','ltifc',[2 4],ltisys(-10,-10,1,0),'freq'); size(Z)