An example of a polar floating bar chart (don't know if there is a better name for it), showing random data. Such a diagram can be used for example to show daily minimum and maximum temperatures for a year, like in this example.
My first intention was to use radialArea with a step interpolation, but then I realized that this would apply a step function to cartesian coordinates rather than polar ones, yielding a horrible result! Instead, I opted for generating annular sectors with arc and using a hackish 0.5 stroke to get rid of white lines between sectors.
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<html lang="en">
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<title>Polar floating bar chart</title>
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<script src="d3-shape.js"></script>
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Modified http://d3js.org/d3.v3.min.js to a secure url
https://d3js.org/d3.v3.min.js