This parallel coordinate plot visualizes the Iris dataset, encoding four measurements as axes and coloring each polyline by Iris species. Users can drag axis labels to reorder dimensions, while a dropdown toggles the y-axis scale between a fixed union range (0–8) and self-scaled extents per dimension. Built with d3.v5, it uses `d3.scalePoint`, `d3.scaleLinear`, `d3.axisLeft`, and `d3.drag` to support interactive repositioning, with SVG paths and a smooth 600ms transition on axis reordering.