SPCCUSUM-class {spcadjust} | R Documentation |
CUSUM Charts
Description
Class extending SPCChart with a basic CUSUM charts implementation.
Details
The only slot this class contains is the data model. This data model should already incorporate the negative mean for in-control updates that is typical for CUSUM charts.
Let be the updates from the data model. Then
the CUSUM chart is given by
and
Examples
X <- rnorm(1000)
chart <- new("SPCCUSUM",model=SPCModelNormal(Delta=1))
## Not run:
SPCproperty(data=X,nrep=10,chart=chart,
property="calARL",params=list(target=100))
SPCproperty(data=X,nrep=10,chart=chart,
property="calhitprob",params=list(target=0.05,nsteps=1e3))
SPCproperty(data=X,nrep=10,chart=chart,
property="ARL",params=list(threshold=3))
## End(Not run)
SPCproperty(data=X,nrep=10,chart=chart,
property="hitprob",params=list(threshold=3,nsteps=1e3))
#increase the number of repetitions nrep for real applications.
[Package spcadjust version 1.1 Index]