Creating Lagged Variables in Time Series Data Frames with dplyr and data.table in R

Using data.table for Efficient Data Manipulation: A Practical Guide to Logical String Matching

Grouping and Aggregation in R: Best Practices for Efficient Data Analysis

Changing a Datatable after Changing an InputSelect in Shiny: A Reactive Approach

Calculating Cumulative Sum with Condition and Reset in R: A Practical Guide

Aggregating Multiple Columns Based on Half-Hourly Time Series Data in R.

Concise A/B Testing Code: Improving Performance with +0 Trick and Map Functionality

Improving Performance of Appending Rows to a data.table: A Four-Pronged Approach for Enhanced Efficiency

Merging Data Tables Based on Nearest Coordinates in R Using data.table Package

Counting and Aggregating with data.table: Efficient Data Manipulation in R