This example demonstrates a scatter plot of the Iris dataset, mapping petal length to the x-axis and sepal length to the y-axis. The visualization uses D3 v7 APIs including `d3.csv`, `d3.scaleLinear`, `d3.extent`, `d3.axisLeft`, and `d3.axisBottom` to load data, scale positions, and render axes. Circles of fixed radius are drawn as SVG elements with coordinates computed from the scaled values. The chart fills the browser window, with the data sourced from a GitHub Gist and rendering done entirely in SVG.