A radial stacked bar chart displays wind speed distribution across compass directions, with each direction divided into wind speed bins colored from blue to red. The circular layout uses a custom `scaleRadial` scale built on `d3-scale` to map data values to radial distances. The `d3.csv` function loads the dataset, `d3.stack()` layers the speed categories, and `d3.arc()` renders the annular segments. Concentric dashed circles show frequency values, while angled labels and a legend identify directions and speed ranges. The SVG output is generated entirely through D3 v6 APIs.