To answer your question based on the provided code snippet, it seems like you're trying to create a line graph where the x-axis represents different variables and the y-axis represents values. The `gather` function is used to pivot the data from wide format to long format, which is necessary for creating a line graph.

Reshaping Pandas DataFrames with Multiple Columns Using Stack and Unstack

Understanding and Addressing NaN Values in Pandas DataFrames

Mastering iAd and ADBannerView in iOS for Seamless Ad Experience

Passing Arguments into Subset Function in R

Conditional Operations in R: A Deep Dive into Differences Between Rows

Understanding Lateral Joins in PostgreSQL: A Deep Dive

How to Set a Specific Term on All Posts of a Custom Type in WordPress Using Stored Procedures

Using Conditions in Columns with Aggregates and Grouping in SQL

Manipulating Two Columns in SQL: Creating a Third Column with Percentage Values