This example shows a scatter plot of the Iris dataset, mapping sepal length and petal length along the x- and y-axes. It uses D3 v7 to load and parse the data via `csvParse`, and renders marks with `scaleLinear` and an ordinal shape scale using the symbols from `symbolsFill`. A custom legend displays the three species categories. The visualization is drawn in an SVG container sized to the window, with axes and labels generated by custom `axes` and `shapeLegend` modules.