A collection of bar charts, scatter plots, and pie charts visualizes data science salary trends. The charts include a bar chart of total salary by job title, a scatter plot of salary versus experience level, a top-10 job title salary bar chart, a stacked bar chart of employment types, and pie charts for skills and experience levels. Built with D3.js (v3 and v7), the examples use SVG rendering, `d3.scaleBand`, `d3.scaleLinear`, `d3.rollup`, `d3.pie`, and `d3.arc`. Data is loaded from a remote CSV file containing data science salary information.