This example shows a scatter plot of the Iris dataset, mapping sepal length on the x-axis and petal length on the y-axis. Each point is colored by species using a categorical scale, with a color legend identifying setosa, versicolor, and virginica. The visualization uses D3.js APIs including `scaleLinear` for axes, `scaleOrdinal` with `schemeCategory10` for colors, and `axisLeft`/`axisBottom` for rendering axes. Data is loaded from a CSV file and parsed with `csvParse`.