This example displays the classic Iris dataset as an interactive parallel coordinate plot, with each flower’s measurements drawn as a semi-transparent colored path across four vertical axes. The colors correspond to the three Iris species, with a legend shown below. Users can drag any axis horizontally to reorder the dimensions, which triggers a smooth animated transition of the paths and axes. The implementation uses D3 v5 with `scalePoint` for axis positioning, `scaleLinear` for value mapping, `d3.drag` for interaction, and `transition.attr` for the reordering animation.