This example visualizes the Iris Dataset, plotting petal length against petal width, with each point colored by species. A scatter of circles maps these measurements, while additional sepal dimensions are stored as unused properties on each data point. The visualization loads CSV data via `d3.csv`, constructs scales with `d3.scaleLinear`, and renders circles and axes using SVG. The code uses D3 v6, with styling applied through `d3.axisLeft` and `d3.axisBottom`. The plot fills the browser window, and tick labels are enlarged for readability.