This example demonstrates a joyplot update pattern, visualizing the distribution of three chemical response metrics (BmdA, BmdB, BmdC) across 50 chemicals using stacked kernel density estimates and rug plots. Each row in the SVG represents one metric, with a filled density curve drawn using D3’s area generator and a rug plot of individual data points marked as orange lines. The y-axis uses a band scale to separate the three distributions, while the x-axis maps the measured values. The code uses d3.v4 with SVG rendering, and includes an interactive tooltip library via d3-tip, though no explicit interaction is shown.