R – Level Ordering of Factors
Factors are data objects used to categorize data and store it as levels. They can store a string as well as an integer. They represent columns as they have a limited number of unique values. Factors in R can be created using the factor() function. It takes a vector as input. c() function is used to create a vector with explicitly provided values.
Example:
R
x <- c("Pen", "Pencil", "Brush", "Pen", "Brush", "Brush", "Pencil", "Pencil")print(x)print(is.factor(x))# Apply the factor function.factor_x = factor(x)levels(factor_x) |
Output :
[1] "Pen" "Pencil" "Brush" "Pen" "Brush" "Brush" "Pencil" "Pencil" [1] FALSE [1] "Brush" "Pen" "Pencil"
In the above code, x is a vector with 8 elements. To convert it to a factor the function factor() is used. Here there are 8 factors and 3 levels. Levels are the unique elements in the data. It can be found using the levels() function.
Level Ordering of Factors in R Programming
In this article, we will see the level ordering of factors in the R Programming Language.
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