Say I can pass several commands to my program, and each command corresponds to a function.How can I call this function without a lot of if-else? To add a little seasoning, I also need to pass ...

Generate a new table including certain data The FILTER function makes me feel like an Excel genius even though it is simpler than some of the other functions you'll find in the software. This ...

R data.table code becomes more efficient — and elegant — when you take advantage of its special symbols and functions. With that in mind, we’ll look at some special ways to subset, count ...