is.ordered() function in R Programming Language is used to check if the passed factor is an ordered factor.
Syntax: is.ordered(factor)
Parameters:
- factor: Factor to be checked
is.ordered() Function in R Programming Example
Example 1: Demonestration of R – is.ordered() Function
R
# Creating a vector x<- c ( "female" , "male" , "male" , "female" )
# Converting vector into factor gender <- factor (x)
# Using is.ordered() Function # to check if a factor is ordered is.ordered (gender)
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Output:
[1] FALSE
Example 2:
R
# creating vector size size = c ( "small" , "large" , "large" , "small" ,
"medium" , "large" , "medium" , "medium" )
sizes <- ordered ( c ( "small" , "large" , "large" ,
"small" , "medium" ))
# ordering the levels sizes <- ordered (sizes, levels = c ( "small" , "medium" ,
"large" ))
# Checking if the factor is ordered # using is.ordered() function is.ordered (sizes)
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Output:
[1] TRUE
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