Main Content


Determine if dynamic system model is in discrete time


bool = isdt(sys)


bool = isdt(sys) returns a logical value of 1 (true) if the dynamic system model sys is a discrete-time model. The function returns a logical value of 0 (false) otherwise.

Input Arguments


Dynamic system model or array of such models.

Output Arguments


Logical value indicating whether sys is a discrete-time model.

bool = 1 (true) if sys is a discrete-time model (sys.Ts ≠ 0). If sys is a continuous-time model, bool = 0 (false).

For a static gain, both isct and isdt return true unless you explicitly set the sample time to a nonzero value. If you do so, isdt returns true and isct returns false.

For arrays of models, bool is true if the models in the array are discrete.

See Also


Introduced in R2007a