This example demonstrates a reusable D3 scatter plot using the Iris dataset, visualizing petal length against sepal length with circular marks. The code, written by InnocentSky and rendered as SVG, uses `d3.scaleLinear` for axes, `d3.axisLeft` and `d3.axisBottom` for ticks, and a configurable `scatterPlot()` factory function that accepts setters for width, height, data, margin, and radius. Data is loaded asynchronously via `d3.csv`, with numeric parsing applied to all measurement columns. The plot fills the browser window and includes styled tick labels.