qcc: shewhart.rules – R documentation

Pricing

Become an expert in R — Interactive courses, Cheat Sheets, certificates and more!

Get Started for Free

Documentation

qcc

shewhart.rules

Functions specifying rules for Shewhart charts

Description

These functions are used to signal out of control points in Shewhart charts.

Usage

shewhart.rules(object, limits = object$limits, run.length = qcc.options("run.length"))
beyond.limits(object, limits = object$limits)
violating.runs(object, run.length = qcc.options("run.length"))

Arguments

`object`	an object of class 'qcc'.
`limits`	control limits
`run.length`	the maximum value of a run before to signal a point as out of control.

Details

The function shewhart.rules simply calls the beyond.limits and violating.runs functions which actually do the real calculations.

Value

The shewhart.rules function returns a list with components:

`beyond.limits`	the indices of points beyond control limits.
`violating.runs`	the indices of points violating runs.

Author(s)

Luca Scrucca

qcc

Quality Control Charts

v2.7

GPL (>= 2)

Authors

Luca Scrucca [aut, cre], Greg Snow [ctb], Peter Bloomfield [ctb]

Initial release

2017-07-09