Timer in RCAP

The timer control uses a dummy variable to trigger changes. This advantage is that this means that one timer control can be used to fire multiple functions, as long as they all mention the associated dummy variable.

Consider a timer control with associated variable dummyVariable and interval of 1, and also a rtext control with control function timerTrigger with the following code:

dummyVariable <<- 0 # can be any value, it doesn't matter

timerTrigger <<- function() {
   paste(rnorm(10), collapse = " ")
}

Then when the dashboard is displayed, the 10 random numbers will be regenerated every second.