Transforming Data from Long to Wide Format Using R's tidyr Package

Converting Categorical Variables to Ordered Factors in R

Mastering R Testing: Understanding `testthat` Frameworks, Global Environments, and Function Differences between `test_check()` and `test_dir()`

How to Add Regression Lines to ggplot2 Plots for Data Visualization

Efficiently Working with Lists of DataFrames in R: Solutions for Manipulating Individual Elements

Using the Delta Method for Predictive Confidence Intervals in R Models: A Practical Approach.

Merging Dataframes of Unequal Length Based on Nearest DateTime: A Flexible Approach

Extracting Substrings Beginning with XX.XXXX Using R Regular Expressions

Rotating Text on Secondary Axis Labels in ggplot2: A Step-by-Step Guide

Fixing Anomalous Dates when Converting from Class Factor to Class Date in R