How to remove ordering of the levels from factor variable in R? -

the title says all, ordered factor variable when generated it, remove ordering , use unordered factor variable. , question, if use factor variable predictor in regression make difference r if ordered (ordinal) or simple factor variable (categorical)?

all need is

x <- factor( x , ordered = false ) 

e.g.

x <- factor( c(1,2,"a") , ordered = true ) x #[1] 1 2 #levels: 1 < 2 <  x <- factor( x , ordered = false ) x #[1] 1 2 #levels: 1 2