colinout inner-outer factorization [Inn,X,Gbar]=colinout(G) G linear system (syslin list) [A,B,C,D] Inn inner factor (syslin list) Gbar outer factor (syslin list) X row-compressor of G (syslin list) Inner-outer factorization (and column compression) of (lxp) G =[A,B,C,D] with l<=p. G is assumed to be fat (l<=p) without zero on the imaginary axis and with a D matrix which is full row rank. G must also be stable for having Gbar stable. Dual of rowinout. syslin rowinout