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: