This example demonstrates a reusable scatter plot that visualizes the Iris dataset, plotting sepal length against petal length for each flower variety. The chart uses D3.js v7 with SVG rendering to display circles representing individual data points, with axes scaled linearly from zero to the maximum attribute values. The implementation defines a reusable `scatterplot()` function that accepts a selector, data, and two attribute names, enabling the same visualization logic to be applied to different data fields. The JavaScript code leverages `d3.csv()` for data loading, `d3.scaleLinear()` for coordinate mapping, and D3 axis generators to create the chart.