What is the dplyr rename() function in R?
Overview
In the dplyr package, we use the rename() function to rename each variable or column name individually. It changes the column names, but the column order is preserved along with DataFrame attributes.
Syntax
rename(.data, ...)
Parameters
It takes the following argument values.
.data: This can be a DataFrame, a tibble, or a lazy DataFrame....: This is an additional argument, used to rename variables names asnew_name=old_name.
Return value
It returns an updated object of the same type as .data.
Example
In this code snippet, we'll discuss the rename() function from the dplyr package to rename the column names of the iris dataset.
library("dplyr")# Load iris dataset as R tibbleiris <- as_tibble(iris)# Print loaded datasetprint(iris)# update new_name = old_name# as petal_length = Petal.Lengthrename(iris, petal_length = Petal.Length)
Explanation
- Line 3: The
as_tibble(iris)keyword will load the iris dataset as an R tibble in theirisvariable. - Line 5: We print the loaded dataset on the console to show rows and columns.
- Line 8: We invoke
rename(iris, petal_length = Petal.Length)which will change the current variable namePetal.LengthtoPetal_Length.
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