R/00virtual.R

In cg: Compare Groups, Analytically and Graphically

## $Id: 00virtual.R 5596 2014-07-16 22:17:15Z bpikouni $ 

## Virtual Classes for cg package
## For Polymorphic slots

setOldClass("lm")
setOldClass("rlm")
setOldClass("survreg")
setOldClass("gls")

setClass("olsfit")
setClass("rrfit")
setClass("aftfit")
setClass("uvfit")

setClassUnion("olsfit", c("character", "lm"))
setClassUnion("rrfit", c("character", "rlm", "lm"))
setClassUnion("aftfit", c("character", "survreg"))
setClassUnion("uvfit", c("character", "gls"))

setClass("numericOrNULL")
setClassUnion("numericOrNULL", c("numeric", "NULL"))

setClass("dataframeMatrixOrNULL")
setClassUnion("dataframeMatrixOrNULL", c("data.frame", "matrix", "NULL"))

setClass("dataframeOrNULL")
setClassUnion("dataframeOrNULL", c("data.frame", "NULL"))

setClass("characterOrNULL")
setClassUnion("characterOrNULL", c("character", "NULL"))

setClass("characterOrExpression")
setClassUnion("characterOrExpression", c("character", "expression"))