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count

Chart executions during which condition is valid

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Syntax

count(C)

Description

example

count(C)returns the number of times that the chart has woken up since the conditional expressionCbecametrueand the associated state became active.

Examples

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反式ition out of the associated state when the variablexhas been greater than or equal to 2 for longer than five chart executions.

[count(x>=2) > 5]

Stateflow chart that uses the count operator in a transition.

Store the number of chart executions since the variablexbecame greater than 5.

en,du: y = count(x>5);

Stateflow chart that uses the count operator in a state.

Tips

  • The Stateflow®chart resets the value of thecountoperator if the conditional expression becomesfalse或者相关的状态变得不活跃。

  • When a chart in a Simulink®model does not have input events, the value ofcountdepends on the step size. Changing the solver or step size for the model affects the results produced by thecountoperator.

  • To ensure that your Stateflow chart simulates without error, do not use count in these objects:

    • Continuous time charts

    • Graphical, MATLAB®, or Simulink functions

    • Simulink based states

    • 反式itions that can be reached from multiple states

    • Default transitions

Version History

Introduced in R2019a

See Also

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