Creating New Column with Conditional Value by ID in R Using data.table Package

Understanding the Reference Behavior of Names(DT) in R Data Tables

Mastering the `%between%` Function in `data.table`: A Guide to Efficient Data Subseting

Writing R data.table Objects to HDF5 Files: A Solution to Missing Columns Issues

Efficiently Calculating New Data.table Columns by Row Values in R

Optimizing a Function with foreach Package in R: A Corrected Approach

Understanding Data.table Differenced Operations with Dates in R

Optimizing R Data Processing Performance Using Snowfall: Unraveling the Mysteries of Parallelization and Function Scope