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half circles for kevin
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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> <script> // Feel free to change or delete any of the code you see in this editor! var svg = d3.select("body").append("svg") .attr("width", 960) .attr("height", 500) var arc = d3.arc(); var halfcircle = function(x,y,rad) { return svg.append('path') .attr('transform', 'translate('+[x,y]+')') .attr('d', arc({ innerRadius: 0, outerRadius: rad, startAngle: -Math.PI*0.5, endAngle: Math.PI*0.5 })); } d3.range(30,400,50).forEach(function(y) { d3.range(10).forEach(function() { var x = Math.random() * 400 + 50; var rad = Math.random() * 40 + 10; halfcircle(x,y,rad) .style('opacity', 0.5); }) }) </script> </body>
https://d3js.org/d3.v4.min.js