getCC: Get Phase II corrected charting constant using the CUC or EPC...

In bolus123/PH2XBAR: Phase II Shewhart X-bar Chart

Description

Obtain a corrected charting constant using the CUC or EPC method

Usage

getCC(
    m,
    nu,
    ARL0 = 370,
    interval = c(1, 4),
    CUC.tol = 1e-2,
    CUC.maxIter = 1000,
    EPC.p0 = 0.05,
    EPC.epstilda = 0,
    cc.option = c('EPC'),
    ubCons = 1, 
    apprx = FALSE
)

Arguments

m	number of subgroups
nu	degrees of freedom
ARL0	the nominal value of average run length
interval	the searching range of charting constants. The default setting is between 1 and 4.
CUC.tol	tolerance level for the expectation of the conditional average run length for the CUC method. The default setting is 1e-2.
CUC.maxIter	maximum iteration of computation for the CUC method. The default setting is 1000.
EPC.p0	the nominal value of probability for the EPC method. It is not recommended using values greater than 0.5. The default setting is 0.05
EPC.epstilda	the nominal value of tolerance factor for the EPC method. The default setting is 0.
cc.option	the charting constant option. In the default setting, the charting constant is calculated using the EPC method
ubCons	the unbiasing constant. The default setting is 1.
apprx	a trigger asking where the approximation is engaged. The default setting is FALSE.

Examples

ub <- c4.f(49)

# get the charting constant using the CUC method
getCC(m = 50, nu = 49, cc.option = 'CUC', ubCons = ub)

# get the charting constant using the EPC method
getCC(m = 50, nu = 49, cc.option = 'EPC', ubCons = ub)

bolus123/PH2XBAR documentation built on Aug. 5, 2020, 11:50 a.m.