<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8">
<title>Testing Pie Chart</title>
<script src="d3.v3.min.js" charset="utf-8"></script>
<style type="text/css">
#chart {
margin-top: 100px;
position: absolute;
margin-right: 50px;
margin-left: 50px;
}
.tooltip {
background: #eee;
box-shadow: 0 0 5px #999999;
color: #900C3F;
display: inline-block;
font-size: 12px;
left: 600px;
padding: 10px;
position: absolute;
text-align: center;
top: 95px;
width: 150px;
z-index: 10;
opacity: 1;
}
rect {
stroke-width: 2;
}
path {
stroke: #ffffff;
stroke-width: 0.5;
}
div.tooltip {
position: absolute;
z-index: 999;
padding: 10px;
background: #f4f4f4;
border: 0px;
border-radius: 3px;
pointer-events: none;
font-size: 11px;
color: #000;
line-height: 16px;
border: 1px solid #d4d4d4;
}
.legend{
margin-left: 300px;
}
</style>
</head>
<body>
<div id="chart"></div>
<div id="toolTip" class="tooltip" style="opacity: 0;"></div>
<script type="text/javascript">
var div = d3.select("#toolTip");
var data = [ ["IP", "count"]
["192.168.12.1", "20"],
["76.09.45.34", "40"],
["34.91.23.76", "80"],
["192.168.19.32", "16"],
["192.168.10.89", "50"],
["192.178.34.07", "18"],
["192.168.12.98", "30"]];
var width = 300,
height = 300;
var margin = {top: 15, right: 15, bottom: 20, left: 40},
radius = Math.min(width, height) / 2 - 10;
var legendRectSize = 18,
legendSpacing = 4;
var color = d3.scale.category20b();
var arc = d3.svg.arc()
.outerRadius(radius);
var arcOver = d3.svg.arc()
.outerRadius(radius + 10);
var pie = d3.layout.pie()
.sort(null)
.value(function(d) { return d.data.count; });
var labelArc = d3.svg.arc()
.outerRadius(radius - 40)
.innerRadius(radius - 40);
var svg = d3.select("#chart").append("svg")
.datum(data)
.attr("width", width)
.attr("height", height)
.append("g")
.attr("transform", "translate(" + width / 2 + "," + height / 2 + ")");
var arcs = svg.selectAll(".arc")
.data(pie)
.enter().append("g")
.attr("class", "arc");
var arcs2 = svg.selectAll(".arc2")
.data(pie)
.enter().append("g")
.attr("class", "arc2");
arcs.append("path")
.attr("fill", function(d, i) { return color(i); })
.on("mouseover", function(d) {
var htmlMsg="";
div.transition()
.style("opacity",0.9);
var total = d3.sum(data.map(function(d) {
return d.count;
}));
var percent = Math.round(1000 * d.data.count / total) / 10;
div.html(
"IP :"+ d.data.IP +""+"<br/>"+
"Count : " + d.data.count +"<br/>" +
"Percent: " + percent + '%'+ htmlMsg)
.style("left", (d3.event.pageX) + "px")
.style("top", (d3.event.pageY) + "px");
svg.selectAll("path").sort(function (a, b) {
if (a != d) return -1;
else return 1;
});
var endAngle = d.endAngle + 0.1;
var startAngle = d.startAngle - 0.1;
var arcOver = d3.svg.arc()
.outerRadius(radius + 10).endAngle(endAngle).startAngle(startAngle);
d3.select(this)
.attr("stroke","white")
.transition()
.ease("bounce")
.duration(1000)
.attr("d", arcOver)
.attr("stroke-width",6);
})
.on("mouseout", function(d) {
div.transition()
.duration(500)
.style("opacity", 0);
d3.select(this).transition()
.attr("d", arc)
.attr("stroke","none");
})
.transition()
.ease("bounce")
.duration(2000)
.attrTween("d", tweenPie);
function tweenPie(b) {
b.innerRadius = 0;
var i = d3.interpolate({startAngle: 0, endAngle: 0}, b);
return function(t) { return arc(i(t)); };
}
var k=0;
arcs2.append("text")
.transition()
.ease("elastic")
.duration(2000)
.delay(function (d, i) {
return i * 250;
})
.attr("x","6")
.attr("dy", ".35em")
.text(function(d) { if(d.data.count >0){ k = k+1; return d.data.count;} })
.attr("transform", function(d) { if (k >1){return "translate(" + labelArc.centroid(d) + ") rotate(" + angle(d) + ")";} else{return "rotate(-360)";} })
.attr("font-size", "10px");
function type(d) {
d.count = +d.count;
return d;
}
function angle(d) {
var a = (d.startAngle + d.endAngle) * 90 / Math.PI - 90;
return a > 90 ? a - 180 : a;
}
var legend = d3.select("#chart")
.append("svg")
.attr("class", "legend")
.attr("width", radius+50)
.attr("height", radius * 2)
.selectAll("g")
.data(color.domain())
.enter()
.append("g")
.attr("transform", function(d, i) { return "translate(0," + i * 20 + ")"; });
legend.append('rect')
.attr('width', legendRectSize)
.attr('height', legendRectSize)
.style('fill', color)
.style('stroke', color);
legend.append('text')
.attr('x', legendRectSize + legendSpacing)
.attr('y', legendRectSize - legendSpacing)
.data(data)
.text(function(d,i) { return d.IP; });
</script>
</body>
</html>我正在尝试使用提供的数据集制作饼图，但遇到错误。如何定义参数d以从变量“data”及其后续值“IP”和“count”中获取数据？我不知道我的代码中犯了什么错误。我应该对当前代码进行哪些更改才能获得具有当前数据格式的饼图？请帮我。我被困住了。条件是我不应该在此代码中使用任何类型的 .csv 或 .tsv 文件进行导入。谢谢你的帮助。
最佳答案
一个问题是您的数据数组...您需要删除其中的第一项[此外，您在该项目后面缺少一个“，”。但该项目本身并不是必需的，因为它是一个数组]。
第二个是饼图函数内的 d.data.count ...您需要将其引用为 d[1]，因为您需要在图表中的数据数组中绘制第二项。
下面的工作代码:
<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8">
<title>Testing Pie Chart</title>
<script src="https://d3js.org/d3.v3.min.js" charset="utf-8"></script>
<style type="text/css">
#chart {
margin-top: 100px;
position: absolute;
margin-right: 50px;
margin-left: 50px;
}
.tooltip {
background: #eee;
box-shadow: 0 0 5px #999999;
color: #900C3F;
display: inline-block;
font-size: 12px;
left: 600px;
padding: 10px;
position: absolute;
text-align: center;
top: 95px;
width: 150px;
z-index: 10;
opacity: 1;
}
rect {
stroke-width: 2;
}
path {
stroke: #ffffff;
stroke-width: 0.5;
}
div.tooltip {
position: absolute;
z-index: 999;
padding: 10px;
background: #f4f4f4;
border: 0px;
border-radius: 3px;
pointer-events: none;
font-size: 11px;
color: #000;
line-height: 16px;
border: 1px solid #d4d4d4;
}
.legend{
margin-left: 300px;
}
</style>
</head>
<body>
<div id="chart"></div>
<div id="toolTip" class="tooltip" style="opacity: 0;"></div>
<script type="text/javascript">
var div = d3.select("#toolTip");
var data = [
["192.168.12.1", "20"],
["76.09.45.34", "40"],
["34.91.23.76", "80"],
["192.168.19.32", "16"],
["192.168.10.89", "50"],
["192.178.34.07", "18"],
["192.168.12.98", "30"]];
var width = 300,
height = 300;
var margin = {top: 15, right: 15, bottom: 20, left: 40},
radius = Math.min(width, height) / 2 - 10;
var legendRectSize = 18,
legendSpacing = 4;
var color = d3.scale.category20b();
var arc = d3.svg.arc()
.outerRadius(radius);
var arcOver = d3.svg.arc()
.outerRadius(radius + 10);
var pie = d3.layout.pie()
.sort(null)
.value(function(d) { return d[1]; });
var labelArc = d3.svg.arc()
.outerRadius(radius - 40)
.innerRadius(radius - 40);
var svg = d3.select("#chart").append("svg")
.datum(data)
.attr("width", width)
.attr("height", height)
.append("g")
.attr("transform", "translate(" + width / 2 + "," + height / 2 + ")");
var arcs = svg.selectAll(".arc")
.data(pie)
.enter().append("g")
.attr("class", "arc");
var arcs2 = svg.selectAll(".arc2")
.data(pie)
.enter().append("g")
.attr("class", "arc2");
arcs.append("path")
.attr("fill", function(d, i) { return color(i); })
.on("mouseover", function(d) {
var htmlMsg="";
div.transition()
.style("opacity",0.9);
var total = d3.sum(data.map(function(d) {
return d.count;
}));
var percent = Math.round(1000 * d.data.count / total) / 10;
div.html(
"IP :"+ d.data.IP +""+"<br/>"+
"Count : " + d.data.count +"<br/>" +
"Percent: " + percent + '%'+ htmlMsg)
.style("left", (d3.event.pageX) + "px")
.style("top", (d3.event.pageY) + "px");
svg.selectAll("path").sort(function (a, b) {
if (a != d) return -1;
else return 1;
});
var endAngle = d.endAngle + 0.1;
var startAngle = d.startAngle - 0.1;
var arcOver = d3.svg.arc()
.outerRadius(radius + 10).endAngle(endAngle).startAngle(startAngle);
d3.select(this)
.attr("stroke","white")
.transition()
.ease("bounce")
.duration(1000)
.attr("d", arcOver)
.attr("stroke-width",6);
})
.on("mouseout", function(d) {
div.transition()
.duration(500)
.style("opacity", 0);
d3.select(this).transition()
.attr("d", arc)
.attr("stroke","none");
})
.transition()
.ease("bounce")
.duration(2000)
.attrTween("d", tweenPie);
function tweenPie(b) {
b.innerRadius = 0;
var i = d3.interpolate({startAngle: 0, endAngle: 0}, b);
return function(t) { return arc(i(t)); };
}
var k=0;
arcs2.append("text")
.transition()
.ease("elastic")
.duration(2000)
.delay(function (d, i) {
return i * 250;
})
.attr("x","6")
.attr("dy", ".35em")
.text(function(d) { if(d.data.count >0){ k = k+1; return d.data.count;} })
.attr("transform", function(d) { if (k >1){return "translate(" + labelArc.centroid(d) + ") rotate(" + angle(d) + ")";} else{return "rotate(-360)";} })
.attr("font-size", "10px");
function type(d) {
d.count = +d.count;
return d;
}
function angle(d) {
var a = (d.startAngle + d.endAngle) * 90 / Math.PI - 90;
return a > 90 ? a - 180 : a;
}
var legend = d3.select("#chart")
.append("svg")
.attr("class", "legend")
.attr("width", radius+50)
.attr("height", radius * 2)
.selectAll("g")
.data(color.domain())
.enter()
.append("g")
.attr("transform", function(d, i) { return "translate(0," + i * 20 + ")"; });
legend.append('rect')
.attr('width', legendRectSize)
.attr('height', legendRectSize)
.style('fill', color)
.style('stroke', color);
legend.append('text')
.attr('x', legendRectSize + legendSpacing)
.attr('y', legendRectSize - legendSpacing)
.data(data)
.text(function(d,i) { return d.IP; });
</script>
</body>
</html>关于javascript - 无法从数据集制作饼图，我们在Stack Overflow上找到一个类似的问题： https://stackoverflow.com/questions/37959809/