var margin = {top: 30, right: 20, bottom: 30, left: 70},
h= 500;
w = 960;
ruleColor = "#CCC";
minVal = 0;
maxVal = 100;
width = 960 - margin.left - margin.right,
height = 500 - margin.top - margin.bottom;
var viz = d3.select("#radar")
.append('svg:svg')
.attr('width', w)
.attr('height', h)
.attr('class', 'vizSvg');
viz.append("svg:rect")
.attr('id', 'axis-separator')
.attr('x', 0)
.attr('y', 0)
.attr('height', 0)
.attr('width', 0)
.attr('height', 0);
vizBody = viz.append("svg:g")
.attr('id', 'body');
var heightCircleConstraint = 500 - margin.top - margin.bottom;
var widthCircleConstraint = width = 960 - margin.left - margin.right,
circleConstraint = d3.min([heightCircleConstraint, widthCircleConstraint]);
var radius = d3.scale.linear().domain([minVal, maxVal]).range([0, (circleConstraint / 2)]);
var radiusLength = radius(maxVal);
var centerXPos = widthCircleConstraint / 2 + margin.left;
var centerYPos = heightCircleConstraint / 2 + margin.top;
vizBody.attr("transform",
"translate(" + centerXPos + ", " + centerYPos + ")");
d3.json("data/radar.json", function(error, data) {
var hours = [];
var series = [[]];
data.QualitySummaryObject.forEach(function(d,i) {
series[0][i] = d.extractPercentage;
hours[i] = d.extractorName;
});
for (i = 0; i < series.length; i += 1) {
series[i].push(series[i][0]);
}
//console.log(series.length);
var radialTicks = radius.ticks(5);
vizBody.selectAll('.circle-ticks').remove();
vizBody.selectAll('.line-ticks').remove();
var circleAxes = vizBody.selectAll('.circle-ticks')
.data(radialTicks)
.enter().append('svg:g')
.attr("class", "circle-ticks");
circleAxes.append("svg:circle")
.attr("r", function (d, i) {
return radius(d);
})
.attr("class", "circle")
.style("stroke", ruleColor)
.style("fill", "none");
circleAxes.append("svg:text")
.attr("text-anchor", "middle")
.attr("dy", function (d) {
return -1 * radius(d);
})
.text(String);
var lineAxes = vizBody.selectAll('.line-ticks')
.data(hours)
.enter().append('svg:g')
.attr("transform", function (d, i) {
return "rotate(" + ((i / hours.length * 360) - 90) +
")translate(" + radius(maxVal) + ")";
})
.attr("class", "line-ticks");
lineAxes.append('svg:line')
.attr("x2", -1 * radius(maxVal))
.style("stroke", ruleColor)
.style("fill", "none");
lineAxes.append('svg:text')
.text(String)
.attr("text-anchor", "middle")
.attr("transform","translate(15) rotate(90)");
//var highlightedDotSize = 4;
var groups = vizBody.selectAll('.series').data(series);
//console.log(hours.length);
groups.enter().append("svg:g")
.attr('class', 'series')
.style('fill', "green")
.style('stroke',"#ccc");
//groups.exit().remove();
//console.log(Math.PI);
var lines = groups.append('svg:path')
.attr("class", "line")
/*.attr("d", d3.svg.line.radial()
.radius(function (d) {
return 10;
})
.angle(function (d, i) {
if (i == hours.length) {
i = 0;
} //close the line
return (i / hours.length) * 2 * Math.PI;
}))*/
.style("stroke-width", 1)
.style("fill", "rgba(124,240,10,0.1)");
/*groups.selectAll(".curr-point")
.data(function (d) {
return [d[0]];
})
.enter().append("svg:circle")
.attr("class", "curr-point")
.attr("r", 0);
groups.selectAll(".clicked-point")
.data(function (d) {
return [d[0]];
})
.enter().append("svg:circle")
.attr('r', 0)
.attr("class", "clicked-point");*/
lines.attr("d", d3.svg.line.radial()
.radius(function (d) {
return radius(d);
})
.angle(function (d, i) {
if (i === hours.length) {
i = 0;
} //close the line
return (i / hours.length) * 2 * Math.PI;
}));
});
我实现了这段代码来创建带有 json 数据的雷达图这里是 json 数据格式
{
"QualitySummaryObject": [
{
"extractPercentage": 68.81964,
"extractorName": "Classification"
},
{
"extractPercentage": 74.09091,
"extractorName": "Keyword Match"
},
{
"extractPercentage": 54.62963,
"extractorName": "LocationBroadcast"
},
{
"extractPercentage": 98.91892,
"extractorName": "Qualification"
},
{
"extractPercentage": 98.76923,
"extractorName": "User Profile Location"
},
{
"extractPercentage": 80.15909,
"extractorName": "Valid Person Name"
},
]
}
现在我想在每个节点点上放置工具提示..但我不知道如何做到这一点，任何机构都可以提供帮助？