SimBiology®

Trigger - Event trigger

Description

A Trigger is a condition that must become true for an event to be executed. You can a combination of relational and logical operators to build a trigger expression. Trigger can be a string, an expression, or a function handle that when evaluated returns a value of true or false. Triggers can access species, parameters, and compartments.

A trigger can contain the keyword 'time', to define an event that occurs at a specific time during the simulation.

For more information about how the SimBiology^® software handles events see, How Events Are Evaluated in the SimBiology User's Guide. For examples of event functions see Specifying Event Triggers in the SimBiology User's Guide.

Characteristics

Examples

1. Create a model object, and then add an event object.

   modelObj = sbmlimport('oscillator');
   eventObj = addevent(modelObj, 'time>= 5', 'OpC = 200');

2. Set the Trigger property of the event object.

   set(eventObj, 'Trigger', '(time >=5) && (speciesA<1000)');
   

3. Get the Trigger property.

   get(eventObj, 'Trigger')

See Also

Event object, EventFcns

Tag

Time