This example displays Fisher’s Iris dataset as an interactive parallel coordinate plot, showing four measurements per flower with colored lines by species. Users can drag any axis to reorder dimensions, which repositions the polylines with animated transitions via `d3.drag` and `transition`. Built with D3 v5, it uses `scalePoint` for axes, `scaleLinear` for each measure, and `line` generators for paths, rendering as SVG with axis labels and a legend.