Understanding DataFrames and Melt Transformation in R: A Comprehensive Guide

Stacking Data: A Guide to Understanding and Applying Melt Sets in R and Python

Combining Two DataFrames with Different Column Names and Melt in R using tidyr and dplyr.

How to Aggregate DataFrames in Python Pandas Using Groupby and Dot Methods

Faceting and Interaction Terms for Comparing Data Frame Attributes Across Observations.