Using XLConnect to Directly Read and Write Excel Files in R

Performing a Left Join on Two Data Frames Using Less-Than and Greater-Than Conditions in R with dplyr

Understanding Data Aggregation in R: A Comprehensive Guide

Faceting Text on Individual Panels in ggplot2: A Customizable Annotation Solution

Passing Variables with Dollar Sign Notation to aes() in Combination with Facet Grid or Facet Wrap: A Guide to Avoiding Unexpected Behavior

How to View Source Code for Functions in R: A Comprehensive Guide