The non-numeric argument to binary operator error occurs in R when you “perform arithmetic operations(such as +, -, *, etc.) on non-numeric elements”.
Reproduce the error
a <- "21" b <- 19 c <- a + b print(c)
Error in a + b : non-numeric argument to binary operator
In the above code, the variable “a” is a character, and “b” is numeric, so when we try to add them together, R will generate an error message because we are trying to add a character and a numeric.
The error is raised if one or both arguments passed to the operator are not of a numeric data type (e.g., character or logical).
How to fix Error: non-numeric argument to binary operator
To fix the Error: non-numeric argument to a binary operator in R, you can use the “as.numeric()” function to the character to a numeric vector.
a <- "21" b <- 19 c <- as.numeric(a) + b print(c)
# Create dataframe df <- data.frame( "Cars" = c("BMW", "AUDI", "MERCEDEZ"), "Mileage" = c(10, 15, 18), "Airbags" = c("4", "4", "6") ) # Attempt to create new column called 'total' df$total <- df$Mileage + as.numeric(df$Airbags) print(df)
Cars Mileage Airbags total 1 BMW 10 4 14 2 AUDI 15 4 19 3 MERCEDEZ 18 6 24