How to define transfer function into the tf or ss format

If a transfer function is given like Lt(s) = F*(s*I-A)^(-1)*B, how to get its relative tf() or ss() format so that bodeplot or nyquist can be used? Thx.

Answer 1

[Arkadiy Turevskiy]

sys=ss(A,B,C,0);
bode(sys);
nyquist(sys);

HTH. Arkadiy

Answer 2

[Honglei Chen]

This is already in state space form. Your A,B,F are just A,B,C. Your D is 0

http://lpsa.swarthmore.edu/Representations/SysRepTransformations/TF2SS.html