Functional programming with dplyr

Question

Looking for a more efficient / elegant way to pass multiple arguments to a group-by using non-standard evaluation in a function using dplyr. I don\'t want to use the ... ope

Answer 1

You could just do a straight eval.parent(substitute(...)) like this. Being base R it works consistently across R and is simple to do. One can even use an ordinary aes.

plot_lines <- function(df, x, y, group) eval.parent(substitute(
   df %>%
      group_by(x, group) %>%
      my_smry %>%
      ggplot + geom_line(aes(x = x, y = y, group = group, color = group))
))
plot_lines(my_df, month, conversion_rate, category)