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

The Great R Package Confusion: Why summarize Doesn't Work with Group By in dplyr

Using do.call to Build and Execute Data.table Commands: A Comprehensive Guide

How to Use fct_lump() to Get Top N Levels by Group and Put the Rest in 'other'