Parallelizing for Loops with plyr and the doMC Package

Mastering Data Table and Plyr Parallelization in R: A Step-by-Step Solution

Selecting Certain Observations Plus Before and After Dates Using R

Using the `ddply` Function in R: A Comprehensive Guide to Date Manipulation and Aggregation

How to Resolve the Error Computing Mean on Data Frame in R Using `ddply` from Purrr Package

Understanding How to Group and Remove Duplicate Values from Sparse DataFrames in R

Using a Scripting Language to Extract Data from Large Datasets: A Comparative Analysis of Python and SQL Alternatives