This interactive parallel coordinate plot visualizes the classic Iris dataset, showing measurements of sepal and petal length and width for three flower species. Each polyline traces one flower across four vertical axes, colored by species classification. Users can reassign any of the four displayed attributes via dropdown menus using React state, while hovering over the color legend filters lines by species. The visualization uses d3.csv for data loading, d3.scaleLinear and d3.scaleOrdinal for axes and colors, and d3.line to render the paths in SVG.