This example displays a scatter plot of the Iris dataset, showing sepal length against petal length with points colored and shaped by species. It loads the CSV from a GitHub repository using `d3.csvParse`. The visualization uses D3 v7 scales including `scaleLinear` and `scaleOrdinal` with `symbolsFill` to differentiate species, while a custom legend built with `symbolGenerator` lists the categories. Axes are generated via `axisLeft` and `axisBottom` with explicit labels for each measurement.