This example shows an interactive scatter plot of Iris flower measurements, plotting petal length along the x-axis against sepal width on the y-axis. The visualization uses React components to render SVG elements, with D3 v5 handling data loading via `d3.csv` and scales through `d3.scaleLinear` and `d3.extent`. Data comes from the Iris dataset fetched from a GitHub gist. Axes are built from custom React components that map D3 scales to SVG tick marks and labels, while each data point is rendered as a circle with a tooltip showing the formatted petal length.