# Add new column from existing column df$new_pages <- df$pages-2 df # Output # id pages name new_pages #1 11 32 spark 30 #2 22 45 python 43
# Add new column from existing column df$new_pages <- df$pages-2 df # Output # id pages name new_pages #1 11 32 spark 30 #2 22 45 python 43