Base graphics plotting function for various IRT models.
# S3 method for raschmodel
plot(x,
type = c("profile", "curves", "regions", "information", "piplot"), …)
# S3 method for rsmodel
plot(x,
type = c("regions", "profile", "curves", "information", "piplot"), …)
# S3 method for pcmodel
plot(x,
type = c("regions", "profile", "curves", "information", "piplot"), …)
a fitted model object of class
"raschmodel"
, "rsmodel"
or "pcmodel"
.
character, specifying the type of plot to create.
further arguments passed over to the specific plotting function.