getDiscreteStateImpl

Class: matlab.System

Discrete state property values

Syntax

s = getDiscreteStateImpl(obj)


Description

s = getDiscreteStateImpl(obj) returns a struct s of internal state value properties, which have the DiscreteState attribute. The field names of the struct are the object’s DiscreteState property names. To restrict or change the values returned by getDiscreteState method, you can override this getDiscreteStateImpl method.

Run-Time Details

getDiscreteStateImpl is called by the setup method. For details, see

Detailed Call Sequence.

Method Authoring Tips

• You must set Access = protected for this method.

• You cannot modify any properties in this method.

Input Arguments

obj — System object™

System object

System object handle used to access properties, states, and methods specific to the object. If your getDiscreteStateImpl method does not use the object, you can replace this input with ~.

Output Arguments

s — State values

struct

State values, returned as a struct.

Examples

Get Discrete State Values

Use the getDiscreteStateImpl method in your class definition file to customize the behavior of getDiscreteState method. The System object contains discrete states value and power. A nontunable parameter keepTrack determines the states displayed by getDiscreteState method.

methods (Access = protected)
   function s = getDiscreteStateImpl(obj)
        if obj.keepTrack
            s.value = obj.value;
            s.power = obj.power; 
        else 
            s.value = obj.value; 
        end 
   end
end

Version History

Introduced in R2012b