This interactive scatter plot visualizes the Iris dataset, mapping petal length and width on the x- and y-axes, with both axes labeled. The points are color-coded by species (setosa, versicolor, virginica) using a custom marker function. The visualization uses D3 v6's `csv` parser, `scaleLinear`, `extent`, and the `axisBottom` and `axisLeft` helpers to render an SVG chart. It also includes extra radial attributes (rx, ry) for each circle, though only the constant radius is applied.