The default values for plotting a factor x
are the integers
1:length(levels(x))
. This class and its functions provide a way of
specifying alternate plotting locations for the levels.
A virtual Class: No objects may be created from it.
Class "ordered"
, directly.
Class "factor"
, by class "ordered", distance 2.
Class "oldClass"
, by class "ordered", distance 3.
No methods defined with class "positioned" in the signature.
S3-type methods are
"[.positioned"
,
as.double.positioned
,
as.numeric.positioned
,
as.positioned
,
is.numeric.positioned
,
is.positioned
,
positioned
,
print.positioned
,
unique.positioned
.
Although interaction.positioned
should be a method, it isn't
because interaction
is not a generic and can't easily be made one
since the name interaction.plot
conflicts.
Heiberger, Richard M. and Holland, Burt (2015). Statistical Analysis and Data Display: An Intermediate Course with Examples in R. Second Edition. Springer-Verlag, New York. https://link.springer.com/us/book/9781493921218