mqcs.mcusum: Function to plot mcusum chart

In mflores72000/qcr: Quality Control Review

Function to plot mcusum chart

Description

This function is used to compute statistics required by the Multivariate Cumulative Sum (MCUSUM) chart.

Usage

mqcs.mcusum(x, ...)

## Default S3 method:
mqcs.mcusum(
  x,
  data.name = NULL,
  limits = NULL,
  Xmv = NULL,
  S = NULL,
  k = 0.5,
  h = 5.5,
  method = "sw",
  plot = FALSE,
  ...
)

## S3 method for class 'mqcd'
mqcs.mcusum(
  x,
  limits = NULL,
  Xmv = NULL,
  S = NULL,
  k = 0.5,
  h = 5.5,
  method = "sw",
  plot = FALSE,
  ...
)

Arguments

x	An object of class 'mqcd'.
...	Arguments passed to or from methods.
data.name	A string that specifies the title displayed on the plots. If not provided it is taken from the name of the object x.
limits	A two-values vector specifying the control limits.
Xmv	The mean vector. It is only specified for Phase II or when the parameters of the distribution are known.
S	The sample covariance matrix. It is only used for Phase II or when the parameters of the distribution are known.
k	A constant used in MCUSUM chart. Frequently k = 0.5
h	A constant used in MCUSUM chart. Usually h = 5.5
method	The method employed to compute the covariance matrix in the individual observation case. Two methods are used "sw" for compute according to (Sullivan,Woodall 1996a) and "hm" by (Holmes,Mergen 1993)
plot	Logical value. If TRUE a mcusum chart should be plotted.

Author(s)

Edgar Santos-Fernandez

See Also

mqcd, mqcs

Examples

##
##  Continuous data 
##
library(qcr)
data(dowel1)
str(dowel1)
data.mqcd <- mqcd(dowel1)
res.mqcs <- mqcs.mcusum(data.mqcd)
summary(res.mqcs)
plot(res.mqcs, title =" MCUSUM Control Chart for dowel1")

mflores72000/qcr documentation built on July 1, 2023, 9:17 p.m.