Grouping a DataFrame by One Variable and Calculating Row Sums Within Groups Using R's Tidyverse Library

Mastering Left Joins in R: A Comprehensive Guide to Joining Datasets

Efficiently Count Non-Missing Values Across Multiple Columns in R Using dplyr

Conditioning Data with Dates: Correctly Applying Logical Operators for Unique Individuals

Enabling tbl_df Objects in R: Simplifying Data Frame Handling

Summary of dplyr: A Comprehensive Guide to Summary Over Combinations of Factors

Recode Factor Levels into Numbers: A Step-by-Step Guide to Ignoring Alphabetical Order in R

Cleaning and Processing GPS Data in R: A Step-by-Step Guide

Limiting Rows Returned from Parquet Files Using dplyr in R

Improving Patient Outcomes with R: A Comprehensive Guide to Case_When Function with Complex Conditions