This example shows a stacked bar chart of the Iris dataset, displaying the contributions of sepal length, sepal width, petal length, and petal width per species. It loads data from a remote CSV file using `d3.csv`, and uses `d3.stack`, `d3.scaleBand`, and `d3.scaleLinear` to compute and position the layers. The visualization renders as SVG, with each species on the x-axis and cumulative measurement values on the y-axis, colored distinctly per attribute.