run.length
or more consecutive
points lie on one side of center line of a Shewhart control chart.
shewhart.rules(object, run.length=8)
"shewhart"
. Usually the return object of a call
to the
shewhart
function.
run.length
or more consecutive
points lie on one side of center line of the Shewhart control chart defined
by
object
.
shewhart.rules
is applied to a Shewhart control
chart and all the violating points are highlighted.
shewhart.rules
simply applies
beyond.limits
and
runs.target
and
returns a list of all points which violate either of these rules.
shewhart.rules
may be applied directly to an object inheriting from class
"shewhart"
to obtain a list containing the indices of points beyond the
control limits and those violating the runs rule.
qc.chart <- shewhart(qcc(matrix(rnorm(100),ncol = 5), "xbar")) shewhart.rules(qc.chart)