This visualization displays Fisher’s Iris dataset as a scatter plot, plotting petal length against petal width, with each species represented by a distinct color. The chart titles itself as a comparison of sepal dimensions. Built using D3 v7, the code loads data via `d3.csv`, creates scales with `scaleLinear` and `scaleOrdinal`, and renders axes with `axisBottom` and `axisLeft`. Points are styled with configurable radius, opacity, and stroke, and hovering over the legend fades non-matching species using a `setHoveredColorValue` callback.