Find complement of a data frame (anti - join)

Question

I have two data frames(df and df1). df1 is subset of df. I want to get a data frame which is complement of df1 in df, i.e. return rows of the first data set which are not ma

Answer 1

Try anti_join from dplyr

library(dplyr)
anti_join(df, df1, by='heads')