Creating New Columns in data.table Using a Variable for Column Names

Performing the Chi-Squared Test for Independence in R: A Step-by-Step Guide

Calculating the Moving Average of a Data Table with Multiple Columns in R Using Zoo and Dplyr

Using the Value of a Variable Which Is Just Created in data.table

Data.table Filtering on Group Size with Value Matching While Considering Multiple Fields and Complex Queries

Fixing Errors with Non-Zero Length RHS in Assignment Operations Using R

Optimizing Multivariate Row Subsetting of Data.tables Using Vectors and setkeyv() Function

Summing Partial Datatable as Column for Another Datatable in R Using data.table Package

Mastering Auto-Incrementing Counters with data.tables in R: A Comprehensive Guide

Mastering R's `data.table` Package: Understanding the `class()` Function and Its Implications