This example visualizes the Iris dataset as a scatter plot, mapping petal length on the x-axis against sepal length on the y-axis. Each circle represents a flower sample, with a hover tooltip showing the exact coordinates. Built with D3 v6, the code loads CSV data, uses `scaleLinear` and `extent` to set scales, and renders circles as SVG elements. Axes are added via `axisLeft` and `axisBottom`, with the chart sized to the full browser window.