我对D3.js相当新,并且一直致力于D3甜甜圈图表。我试图在弧线上附加文字,但是所有这些都在中间捏在一起。我尝试了一些我在StackOverflow上找到的修复程序,但它们似乎都没有帮助。
代码:
var margin = {top :30, right: 30, bottom: 40, left: 50}
var height = 600,
width = document.getElementById('chart').clientWidth;
var outerRadius = height / 2 - 20,
innerRadius = outerRadius / 2,
cornerRadius = 10;
var pie = d3.layout.pie()
.sort(null)
.padAngle(.02);
var arc = d3.svg.arc()
.padRadius(outerRadius)
.innerRadius(innerRadius);
d3.tsv("data.tsv", function(error, data) {
var svg = d3.select("#chart").append("svg")
.style('background','#E7E0CB')
.attr("width", width)
.attr("height", height)
.append("g")
.attr("transform", "translate(" + width / 2 + "," + height / 2 + ")");
svg.selectAll("path")
.data(pie(thedata))
.enter().append("g")
.attr('class', 'slice')
var slice = d3.selectAll('g.slice')
.append('path')
.each(function(d) { d.outerRadius = outerRadius - 20; })
.attr("d", arc)
.attr('fill', function(d, i){return colors(i)})
.on("mouseover", arcTween(outerRadius, 0))
.on("mouseout", arcTween(outerRadius - 20, 150));
var text = d3.selectAll('g.slice')
.append('text')
.data(data)
.text(function(d , i){
return d.domain;
})
.attr('fill', 'white')
.attr('text-anchor', 'middle')
.attr('transform', function(d, i){
d.innerRadius =innerRadius;
d.outerRadius = outerRadius;
return 'translate('+arc.centroid(d)+')'
})
})
function arcTween(outerRadius, delay) {
return function() {
d3.select(this).transition().delay(delay).attrTween("d", function(d) {
var i = d3.interpolate(d.outerRadius, outerRadius);
return function(t) { d.outerRadius = i(t); return arc(d); };
});
};
}
这是data.tsv:
value domain
17142857 Increment
2857143 Timber
115310 Fruits
答案 0 :(得分:0)
这里几乎没有问题。
1。)您还没有为pie
函数提供访问函数:
var pie = d3.layout.pie()
.sort(null)
.padAngle(.02)
.value(function(d) { return d.value; }); //<-- add this
2.。)您的文本标签也需要绑定到pie(data)
,因为arc.centroid
需要该格式的数据。完成后,标签现在为d.data.domain
:
var text = d3.selectAll('g.slice')
.append('text')
.data(pie(data))
.text(function(d, i) {
return d.data.domain;
})
.attr('fill', 'white')
.attr('text-anchor', 'middle')
.attr('transform', function(d, i) {
d.innerRadius = innerRadius;
d.outerRadius = outerRadius;
return 'translate(' + arc.centroid(d) + ')'
});
完整的工作代码:
<!DOCTYPE html>
<html>
<head>
<script data-require="d3@3.5.3" data-semver="3.5.3" src="//cdnjs.cloudflare.com/ajax/libs/d3/3.5.3/d3.js"></script>
</head>
<body>
<script>
var margin = {
top: 30,
right: 30,
bottom: 40,
left: 50
}
var height = 600,
width = 600;
var outerRadius = height / 2 - 20,
innerRadius = outerRadius / 2,
cornerRadius = 10;
var pie = d3.layout.pie()
.sort(null)
.padAngle(.02)
.value(function(d) {
return d.value;
});
var arc = d3.svg.arc()
.padRadius(outerRadius)
.innerRadius(innerRadius);
var colors = d3.scale.category10();
//d3.csv("data.csv", function(error, data) {
var data = [{
"value": "17142857",
"domain": "Increment"
}, {
"value": "2857143",
"domain": "Timber"
}, {
"value": "115310",
"domain": "Fruits"
}];
var svg = d3.select("body").append("svg")
.style('background', '#E7E0CB')
.attr("width", width)
.attr("height", height)
.append("g")
.attr("transform", "translate(" + width / 2 + "," + height / 2 + ")");
svg.selectAll("path")
.data(pie(data))
.enter().append("g")
.attr('class', 'slice')
var slice = d3.selectAll('g.slice')
.append('path')
.each(function(d) {
d.outerRadius = outerRadius - 20;
})
.attr("d", arc)
.attr('fill', function(d, i) {
return colors(i)
})
.on("mouseover", arcTween(outerRadius, 0))
.on("mouseout", arcTween(outerRadius - 20, 150));
var text = d3.selectAll('g.slice')
.append('text')
.data(pie(data))
.text(function(d, i) {
return d.data.domain;
})
.attr('fill', 'white')
.attr('text-anchor', 'middle')
.attr('transform', function(d, i) {
d.innerRadius = innerRadius;
d.outerRadius = outerRadius;
return 'translate(' + arc.centroid(d) + ')'
})
// })
function arcTween(outerRadius, delay) {
return function() {
d3.select(this).transition().delay(delay).attrTween("d", function(d) {
var i = d3.interpolate(d.outerRadius, outerRadius);
return function(t) {
d.outerRadius = i(t);
return arc(d);
};
});
};
}
</script>
</body>
</html>
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