cusum.
This class of objects is returned from
cusum.
An object of class
"cusum" contains all the information
pertinent to a cusum quality control chart.
The class
"cusum" has methods for the following generic functions:
identify
Class
"cusum" inherits from classes
"shewhart" and
"qcc".
The
"cusum" object is implemented as a list with the all of the
components of an object of class
"shewhart", except for
cntrl.limits,
plus the following additional components: