Counting Rows Per Group in R Data Frames Using Multiple Methods

Creating a Group Index for Values Connected Directly and Indirectly Using R's igraph Library

Understanding Data Aggregation in R: A Comprehensive Guide

Understanding the Power of ggplot2 Bar Graphs: Customizing and Ordering for Clear Insights

Replacing NAs with the Latest Non-NA Value Using R's zoo Package

Understanding R's ifelse Statements: A Deep Dive into Conditional Logic

Here's the complete code with all methods:

Understanding the Issue with Dollar Sign Notation in aes(): Avoiding Faceting Problems with ggplot2

Mastering Data Frame Joins in R: A Comprehensive Guide for Efficient Data Analysis

Creating Side-by-Side Plots with ggplot2: A Comparative Guide Using gridExtra, Facets, and cowplot Packages