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
factor,levels
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)

Package base version 6.1.5-18
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