This visualization displays the proportional ratings for different genres as horizontally stacked bars, using the classic Iris dataset. It maps the percentage composition of each genre across the data, with a legend indicating the rating categories. The code builds a stacked bar chart using `d3.stack()`, `d3.scaleBand()`, and `d3.scaleLinear()`, rendered as SVG. Interactive tooltips appear on mouseover, showing the exact percentage for each segment, and colors are assigned via `d3.scaleOrdinal()`.