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basic d3.arc
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<!DOCTYPE html> <head> <meta charset="utf-8"> <script src="https://d3js.org/d3.v4.min.js"></script> <style> body { margin:0;position:fixed;top:0;right:0;bottom:0;left:0; } </style> </head> <body> <svg width="960" height="500"></svg> <script> var arc = d3.arc() .innerRadius(100) .outerRadius(240) .startAngle(0) .endAngle(Math.PI/4) .cornerRadius(15) var svg = d3.select("svg"), width = +svg.attr("width"), height = +svg.attr("height"), g = svg.append("g") .attr("transform", "translate(" + width / 2 + "," + height / 2 +")") var background = g.append("path") .style("fill", "gray") .attr("d", arc) </script> </body>
https://d3js.org/d3.v4.min.js