This scatter plot displays the relationship between sepal length and petal length for iris flowers, with species encoded through different symbol shapes. It uses D3 v7's `scaleLinear`, `scaleOrdinal`, and `symbolsFill` to map data to positions and shapes. The visualization fetches the iris dataset from a GitHub-hosted CSV file, parses it with `csvParse`, and renders axes via `axisLeft` and `axisBottom`, alongside a custom legend built with `symbol()`.