Customizing Plot Panels with ggplot2: Adding Gridlines, Color, and Variables to Show Multiple Plot Points

Understanding the Challenges of Making PRNGs Agree Across Software Packages

Suppressing the Environment Line in R Functions: A Custom Printing Solution

Grouping Data by Latest Entry Using R's Dplyr Package

Understanding the Power of Adjacency Matrices in Geography and Urban Planning: A Practical Guide to Creating County-Level Matrices with R

Listing Files on HTTP/FTP Server from R: A Comparison of RCurl and XML Packages

Evaluating a Model on Test Data: A Creative Solution Without Group By

Resolving Undefined Columns in DataFrame Subset Operations: A Step-by-Step Guide

Extracting Coefficients from Linear Mixed Effects Models with R Code Example

Extracting Specified Number of Words After a String in R Using stringr Package