This example shows a pie chart of data science job titles and their corresponding salaries from a CSV file, with a legend displaying each job category. The visualization uses D3 v7 to load the data via `d3.csv`, compute the pie layout with `d3.pie()`, and render arcs using `d3.arc()` in an SVG container. A sequential color scale from `d3.scaleOrdinal(d3.schemeCategory10)` fills each segment, while the legend is built with D3 selections appending styled HTML divs. The positioning is done manually via SVG group transformations, and the rendering relies entirely on D3’s SVG path generation.