Merge Two Data Frames by Two Columns

[Micaela]

I am attempting to Merge two large data frames that share two columns in common, Month and Year. I attempted the following code:

MassBalance <- Dataset %>% right_join(Monthly_flows_2009_2019, by=c("Year", "Month"))

I received the following error:

Error in Dataset %>% right_join(Monthly_flows_2009_2019, by = c("Year", :
could not find function "%>%"

I am pretty new to R so I would appreciate any feedback. I think I may be missing a library?

[dromano]

What happens if you run library(dplyr)?

[Micaela]

It worked! Since it popped up and showed that it was an extension of dplyr I thought it was already loaded. Thank you!

[andresrcs]

If your question's been answered (even by you!), would you mind choosing a solution? It helps other people see which questions still need help, or find solutions if they have similar problems. Here’s how to do it:

FAQ: How do I mark a solution?

If your question has been answered, don't forget to mark the solution! How do I mark a solution? Find the reply you want to mark as the solution and look for the row of small gray icons at the bottom of that reply. Click the one that looks like a box with a checkmark in it: [image] Hovering over the mark solution button shows the label, "Select if this reply solves the problem". If you don't see the mark solution button, try clicking the three dots button ( ••• ) to expand the full set of options. When a solution is chosen, the icon turns green and the hover label changes to: "Unselect if this reply no longer solves the problem". Success! [solution_reply_author] …