isdt

Determine if dynamic system model is in discrete time

Syntax

bool = isdt(sys)

Description

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

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`sys` — Dynamic system
dynamic system model | dynamic system model array

Dynamic system, specified as a Dynamic system model or an array of dynamic system models.

Output Arguments

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`bool` — Logical output
`1` (`true`) | `0` (`false`)

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.

Version History

Introduced in R2007a