Specifications

isempty
16-106
16isempty
Purpose Test if an LTI model is empty
Syntax boo = isempty(sys)
Description isempty(sys) returns 1 (true) if the LTI model sys has no input or no output,
and
0 (false) otherwise.
Example Both commands
isempty(tf) % tf by itself returns an empty transfer function
isempty(ss(1,2,[],[]))
return 1 (true) while
isempty(ss(1,2,3,4))
returns 0 (false).
See Also issiso True for SISO systems
size I/O dimensions and array dimensions of LTI models