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Pie chart with labels
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| license: mit |
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
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| <!DOCTYPE html> | |
| <head> | |
| <meta charset="utf-8"> | |
| <script src="https://d3js.org/d3.v3.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 data = [ | |
| {name: "A", val: 11975}, | |
| {name: "B", val: 5871}, | |
| {name: "C", val: 8916} | |
| ]; | |
| var w = 600, | |
| h = 400, | |
| r = Math.min(w, h) / 2, | |
| labelr = r + 30, // radius for label anchor | |
| color = d3.scale.category20(), | |
| donut = d3.layout.pie(), | |
| arc = d3.svg.arc().innerRadius(r*.6).outerRadius(r); | |
| var vis = d3.select("body") | |
| .append("svg:svg") | |
| .data([data]) | |
| .attr("width", w + 150) | |
| .attr("height", h); | |
| var arcs = vis.selectAll("g.arc") | |
| .data(donut.value(function(d) { return d.val })) | |
| .enter().append("svg:g") | |
| .attr("class", "arc") | |
| .attr("transform", "translate(" + (r + 30) + "," + r + ")"); | |
| arcs.append("svg:path") | |
| .attr("fill", function(d, i) { return color(i); }) | |
| .attr("d", arc); | |
| arcs.append("text") | |
| .attr("text-anchor", "middle") | |
| .attr("x", function(d) { | |
| var a = d.startAngle + (d.endAngle - d.startAngle)/2 - Math.PI/2; | |
| d.cx = Math.cos(a) * (r - 45); | |
| return d.x = Math.cos(a) * (r+30); | |
| }) | |
| .attr("y", function(d) { | |
| var a = d.startAngle + (d.endAngle - d.startAngle)/2 - Math.PI/2; | |
| d.cy = Math.sin(a) * (r - 45); | |
| return d.y = Math.sin(a) * (r + 30); | |
| }) | |
| .text(function(d) { return d.value.toFixed(2); }) | |
| .each(function(d) { | |
| var bbox = this.getBBox(); | |
| d.sx = d.x - bbox.width/2 - 2; | |
| d.ox = d.x + bbox.width/2 + 2; | |
| d.sy = d.oy = d.y + 5; | |
| }); | |
| arcs.append("path") | |
| .attr("class", "pointer") | |
| .style("fill", "none") | |
| .style("stroke", "black") | |
| .attr("d", function(d) { | |
| console.log(d); | |
| if(d.cx > d.ox) { | |
| return "M" + d.sx + "," + d.sy + "L" + d.ox + "," + d.oy + " " + d.cx + "," + d.cy; | |
| } else { | |
| return "M" + d.ox + "," + d.oy + "L" + d.sx + "," + d.sy + " " + d.cx + "," + d.cy; | |
| } | |
| }); | |
| </script> | |
| </body> |
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