This interactive parallel coordinate plot visualizes the classic Iris dataset, with each line representing a flower sample and colored by species. Users can drag the four vertical axes (sepal length, sepal width, petal length, petal width) to reorder dimensions, which triggers a redraw of all polylines and axes. Built with D3 v4, the example uses `d3.scaleLinear` for each axis, `d3.scalePoint` for axis positioning, and `d3.line` to generate the paths, while `d3.drag` enables the interactive axis reordering.