This example presents a reusable scatter plot built with D3 and React, visualizing the classic Iris dataset. It demonstrates how a modular chart component can be configured with data, axis titles, and margins. The code uses `d3.scaleLinear`, `d3.extent`, `d3.axisLeft`, and `d3.axisBottom` to map data to SVG coordinates, and renders circles with a fixed radius. The chart is driven by an asynchronous fetch of a CSV file, parsed into numeric columns, and displayed using the SVG rendering approach.