Identify Points On a Shewhart Quality Control Chart.

DESCRIPTION:

Interactively identifies points on a Shewhart chart if a suitable graphics device is being used.

USAGE:

identify.shewhart(object, labels, ...) 

REQUIRED ARGUMENTS:

object
a "shewhart" object.
labels
vector giving labels for each of the points. If supplied, this must have the same length as object$new.statistics if .chart.all = F and the combined length of object$statistics and object$new.statistics if .chart.all = T.

OPTIONAL ARGUMENTS:

...
optional arguments taken from the argument list for identify.default.

VALUE:

indices of the identified points.

SIDE EFFECTS:

labels are placed on the current plot if plot = TRUE, the default for identify.default .

DETAILS:

This function is a method for the generic function identify for class "shewhart" . It can be invoked by calling identify for an object of the appropriate class, or directly by calling identify.shewhart regardless of the class of the object.

SEE ALSO:

, .

EXAMPLES:

qc.chart <- shewhart(qcc(matrix(rnorm(100), ncol = 5), "xbar")) 
identify(qc.chart)