I have a data frame that contains a column of numbers. I am trying to add those numbers together through the mutate function so that I can create a new variable containing the total sum of those numbers, and then add that new variable onto the end of my existing data frame.
I am trying to use the following line of code:
library(dplyr)
mutate(total_sum = sum(orders$numbers))
But when I run that line of code I get the following error:
Error in mutate_(.data, .dots = compat_as_lazy_dots(...)) :
argument ".data" is missing, with no default
What is causing this error and how can I fix it? My data frame is called orders but the column I want to add is called numbers.
