Radial Stacked Bar
A radial stacked bar chart displays population distribution across U.S. counties by age bracket, arranged around a circular axis to emphasize potential cyclical patterns, though the data is not cyclical. The visualization uses D3 v4 with a custom `d3-scale-radial.js` plugin implementing a square-root scale for the radial variable, while `d3.arc()` generates the annular segments with `d3.stack()` for layered series. State labels rotate around the perimeter, and circle gridlines with tick marks indicate population totals. Data loads from a CSV file, rendered as SVG in a 960×960 viewport.
AI-generated descriptionThis is a radial variant of my earlier example stacked bar chart. While pretty, you probably don’t want to use this version because it’s easier to compare the bars when they share an aligned (linear) axis. You might consider this form if your ordinal axis is cyclical, such as weeks of the year, and you want to show a cyclical pattern. This example’s data is not cyclical, so the use of a radial form here is rather gratuitous!
forked from <a href='http://bl.ocks.org/mbostock/'>mbostock</a>'s block: <a href='http://bl.ocks.org/mbostock/6fead6d1378d6df5ae77bb6a719afcb2'>Radial Stacked Bar</a>