An interactive parallel coordinate plot visualizes the Iris dataset, showing each flower as a polyline across four variable axes (sepal length/width and petal length/width) with lines colored by species class. The visualization uses D3 v7 scales and SVG paths to render the axes and lines, while React manages dropdown menus that allow reassigning each axis to a different attribute. Hovering the color legend filters the displayed lines to the selected species, using D3’s `scaleOrdinal` for colors. Data is loaded asynchronously via D3’s `csv` parser.