seeing the expression of the transfer function

hello,

I have a system that is defined in the state space by the command - sys=ss(A,B,C,D);

I am trying to extract the Transfer FunctionTransfer Function from sys by the command G=tfdata(sys).

How can I present the outcome in terms of a division of a numerator and denominator?

[Walter Roberson]

why not display tf(sys) ? numerator and denominator is the standard built in display format for tf

[madhan ravi]

Eliraz Nahum's answer moved here for consistency:

hey Robert,

I am studying control engineering and we usually write the transfer function as a division of numerator and denominator (in this case G(s)=15/(s^2+5s+6)).

How can I "plot" it? or at least the numerator and denominator separately?

thanks

[Walter Roberson]

display of the result of a tf() would be in multiple lines with a numerator polynomial then dividing line then denominator polynomial .

If you want it all on one line the easiest would probably be to tf2sym from the file exchange . or poly2sym the numerator and denominator and divide.

[Eliraz Nahum]

How can I "plot" ithe transfer function?

it doesn't make it by default

[Walter Roberson]

https://www.mathworks.com/help/control/examples/plotting-system-responses.html