R has a number of quick, elegant ways to join data frames by a common column. I’d like to show you three of them: base R’s merge() function; dplyr’s join family of functions; data.table’s ...

However, note also that you can do a lot more inside data.table brackets than a base R data frame. And the “by” section is new to data.table. Since I’m selecting columns, ...

If it’s a 2-dimensional table of data stored in an R data frame object with rows and columns — one of the more common structures you’re likely to encounter — here are some ideas.

There are packages that extend the basic capabilities of R data frames, though. One, the tibble tidyverse package, creates basic data frames with some extra features. Another, data.table, ...

Data Frames An R data frame is roughly similar to a table object in many other languages. Data frame objects are often used when working with built-in R statistics functions such as performing a ...