This scatter plot visualizes the Iris dataset, displaying sepal length on the x-axis and petal length on the y-axis, with each species represented by a distinct symbol from the `symbolsFill` scale. The visualization uses d3’s `scaleLinear` for axes, `scaleOrdinal` for shape mapping, and a custom `shapeLegend` to denote species categories. Data is loaded from a CSV file via `csvParse`, while `axes` and `symbol` utilities construct the chart and legend.