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D3_16.html
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D3_16.html
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<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8" />
<meta http-equiv="X-UA-Compatible" content="IE=edge">
<title>Page Title</title>
<meta name="viewport" content="width=device-width, initial-scale=1">
<script src="./D3.js" charset="utf-8"></script>
</head>
<body>
</body>
<script charset="utf-8">
var width = 500;
var height = 500;
var svg = d3.select('body').append('svg').attr('width',width).attr('height',height);
var data = [ [" 小 米", 60.8], [" 三 星", 58.4], [" 联 想", 47.3], [" 苹 果", 46.6], [" 华 为", 41.3], [" 酷 派", 40.1] , [" 其 他", 111.5] ];
var pie = d3.pie().value(function(d,i){
return d[1];
});
var pieData = pie(data);
var outerRadius = width / 3;
var innerRadius = 0;
var arc = d3.arc().innerRadius(innerRadius).outerRadius(outerRadius);
var color = d3.scaleOrdinal(d3.schemeCategory10);
var arcs = svg.selectAll('g').data(pieData).enter().append('g')
.attr('transform','translate('+(width/2)+','+(height/2)+')')
.call(d3.drag().on('drag',draged));
var arcsTran = arcs.transition();
arcs.append('path').attr('fill',function(d,i){
return color(i);
}).attr('d',function(d){
return arc(d);
});
arcs.append('text').attr('transform',function(d,i){
var x = arc.centroid(d)[0] * 1.4;
var y = arc.centroid(d)[1] * 1.4;
return 'translate('+x+','+y+')';
}).attr('text-anchor','middle').text(function(d,i){
var percent = Number(d.value/d3.sum(data,function(d){
return d[1];
}) * 100);
return percent.toFixed(1) + '%';
});
arcs.append('line').attr('stroke','black').attr('x1',function(d){
return arc.centroid(d)[0] * 2;
}).attr('y1',function(d){
return arc.centroid(d)[1] * 2;
}).attr('x2',function(d){
return arc.centroid(d)[0] * 2.2;
}).attr('y2',function(d){
return arc.centroid(d)[1] * 2.2;
})
arcs.append('text').attr('transform',function(d){
var x = arc.centroid(d)[0] * 2.5;
var y = arc.centroid(d)[1] * 2.5;
return 'translate('+x+','+y+')';
}).attr('text-anchor','middle').text(function(d){
return d.data[0];
});
function draged(d){//节点正在拖动时的设置节点固定位置信息
d.fx = d3.event.x;
d.fy = d3.event.y;
d3.select(this).attr('transform','translate('+d.fx+','+d.fy+')');
}
</script>
</html>