David Bumbeishvili bumbeishvili

The earlier example of this brushable radial chart led to some feedback to make the filtering better. I introduced a #circularBrush.filter(array,accessor) that takes an array of data and and accessor for that data and returns to you the data that falls into the area of the brush. The functionality of this chart is no different than the other, but if you take a look at the code, it's much more efficient.

Implementing a variation of Joachim Ungar's curved label placement method described here. The basic process is:

Turn the shape into a polygon of evenly-spaced points.
Generate a Voronoi diagram of those points.
Clip the edges.
Turn the edges into a graph.
Find the "longest shortest path" between any pair of perimeter nodes.
Smooth/simplify that path a bit.
Place text along the smoothed centerline with a <textPath>.

Levin Dixon asked how to create a path with rounded corners. The provided curves in d3 adjust the entire path, not just area around the data points.

This might look a better with an A command instead of C, but circles are hard.

	<!doctype html>
	<html class="no-js" lang="">
	<head>
	<meta charset="utf-8">
	<title>Canvas City</title>
	<meta name="description" content="">
	<meta name="viewport" content="width=device-width, initial-scale=1">
	</head>
	<body>
	<canvas></canvas>