Indices of Points Beyond Control Limits in Shewhart Chart
DESCRIPTION:
Returns the indices of all the points either above the upper control limit or below the lower control limit of a Shewhart control chart.
USAGE: 
beyond.limits(object)
REQUIRED ARGUMENTS:
object:
an object of class "shewhart". Usually the return object of a call to the shewhart function.
VALUE:
the indices corresponding to points falling outside the control limits.
DETAILS:
beyond.limits and runs.target are the two rules applied to a Shewhart control chart by default. Any violating points are highlighted. Both beyond.limits and runs.target are called by shewhart.rules which is called by shewhart.

beyond.limits may be applied directly to an object inheriting from class "shewhart" to obtain the indices of points beyond the control limits.

SIDE EFFECTS:
In a call to shewhart, beyond.limits is applied (by default) to the Shewhart control chart and all the violating points are highlighted.
SEE ALSO:
runs.target , shewart , shewhart.rules .
EXAMPLES: 
qc.chart <- shewhart(qcc(matrix(rnorm(100), ncol = 5), "xbar"))
beyond.limits(qc.chart)