Calculating Mean by Groups in R: A Step-by-Step Guide

Splitting and Transforming Wide-Form Data into Long-Form with R's Tidyverse

Filtering Data to One Daily Point Per Individual Using dplyr in R

Using Filter Conditions in Dplyr: Create a New Column with Minimum Date Per Group

Filling Missing Values in R with Available Information: A Step-by-Step Guide

Pivoting Dataframes or Self Joining: A Comprehensive Guide to Transforming and Summarizing Your Data in R

How to Use do.call with dplyr's Non-Standard Evaluation System for Dynamic Data Transformations

Left Joining Two Dataframes Using grep and powerjoin in R

Long-to-Wide Conversion: A Key Step in Data Analysis and Visualization

Optimizing Consecutive Wins Analysis Using DPLYR and DATA.Table in R