In this article, we will be looking toward the approach to fix the error in selecting unused arguments in the R programming language.
Error in selecting unused arguments: The R compiler produces this error when a programmer tries to use the select() function of the dplyr package in R provided that the MASS package loaded. R tries to make use of the select() function from the MASS package instead when such an error takes place. This article focuses on how to fix this error.
Error: Error in select(., cyl, mpg) : unused arguments (cyl, mpg)
When the error might occur:
Consider the following R program.
Example:
# R program to demonstrate when the # error might occur # Importing libraries library(dplyr)
library(MASS)
# Determine the average mpg grouped by 'cyl' mtcars %>% select(cyl, mpg) %>% group_by(cyl) %>% summarize(avg_mpg = mean(mpg))
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Output:
Interpretation: The compiler produces this error because there is a clash between the select() function from the MASS package and the select() function from the dplyr package.
How to Fix the Error:
This error can be eliminated by using the select() function directly from the dplyr package.
Example:
# R program to demonstrate how to # fix the error # Importing libraries library(dplyr)
library(MASS)
# Determine the average mpg grouped by 'cyl' mtcars %>% dplyr::select(cyl, mpg) %>%
group_by(cyl) %>%
summarize(avg_mpg = mean(mpg))
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Output:
Interpretation: The code compiled successfully without any error because dplyr explicitly uses the select() function in the dplyr package rather than the MASS package.