This scatter plot displays the relationship between sepal length and petal length for iris flowers, with species encoded through distinct point shapes and a corresponding legend. The visualization loads its dataset from a CSV file hosted on GitHub. Built with D3 v7, the code employs `scaleLinear` for both axes, `scaleOrdinal` with `symbolsFill` for shape mapping, and custom functions `axes` and `shapeLegend` to render axes and the categorical legend. Data parsing uses D3's `csvParse`, and the plot is redrawn whenever the window is resized.