Here is the code based on the specification provided:

Understanding dplyr Slice and Ifelse Functions in R for Efficient Data Manipulation

Resolving Spherical Geometry Failures when Joining Spatial Data in R with sf Package

Finding the Second Largest Value in a Grouped Dataset Using SQL and Ranking Functions

Improving Dataframe Operations: Best Practices for Changing Column Types Using Tidy Selection Languages in R

Applying Gradient Fill to geom_rect in ggplot2: A Customized Approach for Enhanced Visualization

Understanding iPhone Modals and Presentation Flow

Using Gesture Recognizers in Swift for Building Interactive iOS Apps

Finding the First Non-Zero Value in Each Row of a Pandas DataFrame Using Efficient Methods

Calculate Seasonal Variations Using lubridate and R: A Step-by-Step Guide