Analyzing a data frame by column is one of R’s great strengths. But what if you’re a Tidyverse user and you want to run a function across multiple columns? As of dplyr 1.0, there will be a new ...

See how to join two data sets by one or more common columns using base R’s merge function, dplyr join functions, and the speedy data.table package. R has a number of quick, elegant ways to join data ...