ordered
Create an Ordered factor Object
Description
Return an object with class ordered and class factor.
Usage
ordered(x, ...)
is.ordered(x)
as.ordered(x)
Arguments
| x | data to be made into an ordered factor. | 
| ... | one or more appropriate object(s). | 
 
Value
| ordered | returns an ordered factor: that is, 
an object of class c("ordered", "factor"). | 
| is.ordered | returns TRUE if x 
inherits from class "ordered"; otherwise, it returns FALSE. | 
| as.ordered | returns x if x is ordered; otherwise, it 
returns ordered(x). | 
 
See Also
Examples
someColors <- ordered(c("red","blue","red","green"),
    levels=c("red","orange","yellow","green","blue","indigo","violet"))
someColors
class(someColors)
is.ordered(someColors)
max(someColors)