Microsoft Office's Excel application allows users to store, model and manipulate data sets. Excel spreadsheets organize this data into worksheets, each with a number of rows and columns. Each row or ...

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 ...

Make your R data.table code more efficient and elegant with these special symbols and operators. Plus, learn about the new fcase() function R data.table code becomes more efficient — and elegant — ...