shewhart.
This class of objects is returned from
shewhart. In addition,
cusum
creates objects of class
c("cusum", "shewhart", "qcc"), inheriting from
"shewhart"
and
"qcc".
An object of class
"shewhart" contains all the information
pertinent to a Shewhart quality control chart.
The class
"shewhart" has methods for the following generic functions:
print
identify
Class
"shewhart" inherits from class
"qcc" and class
"cusum" inherits
from classes
"shewhart" and
"qcc".
The
"shewhart" object is implemented as a list with the all of the
components of an object of class
"qcc" plus the following additional
components: