This interactive parallel coordinate plot visualizes the classic Iris dataset, with each of the 150 flowers drawn as a semi-transparent polyline across four axes representing sepal length, sepal width, petal length, and petal width. The lines are colored by species, and users can drag the vertical axes to reorder them, animating the paths via D3 transitions. A dropdown menu toggles the y-axis scale between a fixed union range and per-axis self-scaling, recomputing the scales from the data. The visualization uses D3 v5 with SVG rendering and implements drag behavior through `d3.drag`.