This example visualizes the Iris Dataset as a scatter plot, mapping sepal length along the x-axis and sepal width along the y-axis. Each flower is rendered as a circle with a tooltip showing its sepal dimensions. The visualization uses React to generate SVG elements, with D3 v5 providing scaling, extent calculation, and tick formatting through `d3.scaleLinear` and `d3.format`. The axes and marks are constructed from reusable components, with custom styling applied via CSS classes for fonts and colors.