This pie chart visualizes the distribution of different Iris species from a dataset loaded via d3.csv. The code uses d3.pie and d3.arc to generate the chart, with d3.scaleOrdinal assigning distinct colors to each species. Each slice is labeled with a formatted value, and a legend displays the species names alongside their corresponding colors. The visualization is rendered as an SVG using D3 v5, providing a clear comparison of species proportions in the Iris dataset.