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Last active November 21, 2022 18:41
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Radar Chart D3 V4
Raw
.block
height: 650
Raw
README.md
Raw
data.json
[
[
{"area": "Central ", "value": 80},
{"area": "Kirkdale", "value": 40},
{"area": "Kensington ", "value": 40},
{"area": "Everton ", "value": 90},
{"area": "Picton ", "value": 60},
{"area": "Riverside ", "value": 80}
]
]
Raw
index.html
<!DOCTYPE html>
<meta charset="utf-8">
<head>
<link href="https://fonts.googleapis.com/css?family=Fira+Sans:300,300i,400,500,700" rel="stylesheet">
</head>
<style>
body {
background-color: #F1F3F3
}
.axis {
font: 15px sans-serif;
}
.axis path,
.axis line {
fill: none;
stroke: #D4D8DA;
stroke-width: 2px;
shape-rendering: crispEdges;
}
#chart {
position: absolute;
top: 50px;
left: 100px;
}
.toolTip {
pointer-events: none;
position: absolute;
display: none;
min-width: 50px;
height: auto;
background: none repeat scroll 0 0 #ffffff;
padding: 9px 14px 6px 14px;
border-radius: 2px;
text-align: center;
line-height: 1.3;
color: #5B6770;
box-shadow: 0px 3px 9px rgba(0, 0, 0, .15);
}
.toolTip:after {
content: "";
width: 0;
height: 0;
border-left: 12px solid transparent;
border-right: 12px solid transparent;
border-top: 12px solid white;
position: absolute;
bottom: -10px;
left: 50%;
margin-left: -12px;
}
.toolTip span {
font-weight: 500;
color: #081F2C;
}
</style>
<script src="https://d3js.org/d3.v4.min.js"></script>
<script src="RadarChart.js"></script>
<div id="chart"></div>
<script>
var width = 300,
height = 300;
// Config for the Radar chart
var config = {
w: width,
h: height,
maxValue: 100,
levels: 5,
ExtraWidthX: 300
}
//Call function to draw the Radar chart
d3.json("data.json", function(error, data) {
if (error) throw error;
RadarChart.draw("#chart", data, config);
});
var svg = d3.select('body')
.selectAll('svg')
.append('svg')
.attr("width", width)
.attr("height", height);
</script>
Raw
RadarChart.js
var RadarChart = {
draw: function(id, d, options){
var cfg = {
radius: 5,
w: 600,
h: 600,
factor: 1,
factorLegend: .85,
levels: 3,
maxValue: 0,
radians: 2 * Math.PI,
opacityArea: 0.5,
ToRight: 5,
TranslateX: 80,
TranslateY: 30,
ExtraWidthX: 100,
ExtraWidthY: 100,
color: d3.scaleOrdinal().range(["#6F257F", "#CA0D59"])
};
if('undefined' !== typeof options){
for(var i in options){
if('undefined' !== typeof options[i]){
cfg[i] = options[i];
}
}
}
cfg.maxValue = 100;
var allAxis = (d[0].map(function(i, j){return i.area}));
var total = allAxis.length;
var radius = cfg.factor*Math.min(cfg.w/2, cfg.h/2);
var Format = d3.format('%');
d3.select(id).select("svg").remove();
var g = d3.select(id)
.append("svg")
.attr("width", cfg.w+cfg.ExtraWidthX)
.attr("height", cfg.h+cfg.ExtraWidthY)
.append("g")
.attr("transform", "translate(" + cfg.TranslateX + "," + cfg.TranslateY + ")");
var tooltip;
//Circular segments
for(var j=0; j<cfg.levels; j++){
var levelFactor = cfg.factor*radius*((j+1)/cfg.levels);
g.selectAll(".levels")
.data(allAxis)
.enter()
.append("svg:line")
.attr("x1", function(d, i){return levelFactor*(1-cfg.factor*Math.sin(i*cfg.radians/total));})
.attr("y1", function(d, i){return levelFactor*(1-cfg.factor*Math.cos(i*cfg.radians/total));})
.attr("x2", function(d, i){return levelFactor*(1-cfg.factor*Math.sin((i+1)*cfg.radians/total));})
.attr("y2", function(d, i){return levelFactor*(1-cfg.factor*Math.cos((i+1)*cfg.radians/total));})
.attr("class", "line")
.style("stroke", "grey")
.style("stroke-opacity", "0.75")
.style("stroke-width", "0.3px")
.attr("transform", "translate(" + (cfg.w/2-levelFactor) + ", " + (cfg.h/2-levelFactor) + ")");
}
//Text indicating at what % each level is
for(var j=0; j<cfg.levels; j++){
var levelFactor = cfg.factor*radius*((j+1)/cfg.levels);
g.selectAll(".levels")
.data([1]) //dummy data
.enter()
.append("svg:text")
.attr("x", function(d){return levelFactor*(1-cfg.factor*Math.sin(0));})
.attr("y", function(d){return levelFactor*(1-cfg.factor*Math.cos(0));})
.attr("class", "legend")
.style("font-family", "sans-serif")
.style("font-size", "10px")
.attr("transform", "translate(" + (cfg.w/2-levelFactor + cfg.ToRight) + ", " + (cfg.h/2-levelFactor) + ")")
.attr("fill", "#737373")
.text((j+1)*100/cfg.levels);
}
series = 0;
var axis = g.selectAll(".axis")
.data(allAxis)
.enter()
.append("g")
.attr("class", "axis");
axis.append("line")
.attr("x1", cfg.w/2)
.attr("y1", cfg.h/2)
.attr("x2", function(d, i){return cfg.w/2*(1-cfg.factor*Math.sin(i*cfg.radians/total));})
.attr("y2", function(d, i){return cfg.h/2*(1-cfg.factor*Math.cos(i*cfg.radians/total));})
.attr("class", "line")
.style("stroke", "grey")
.style("stroke-width", "1px");
axis.append("text")
.attr("class", "legend")
.text(function(d){return d})
.style("font-family", "sans-serif")
.style("font-size", "11px")
.attr("text-anchor", "middle")
.attr("dy", "1.5em")
.attr("transform", function(d, i){return "translate(0, -10)"})
.attr("x", function(d, i){return cfg.w/2*(1-cfg.factorLegend*Math.sin(i*cfg.radians/total))-60*Math.sin(i*cfg.radians/total);})
.attr("y", function(d, i){return cfg.h/2*(1-Math.cos(i*cfg.radians/total))-20*Math.cos(i*cfg.radians/total);});
d.forEach(function(y, x){
dataValues = [];
g.selectAll(".nodes")
.data(y, function(j, i){
dataValues.push([
cfg.w/2*(1-(parseFloat(Math.max(j.value, 0))/cfg.maxValue)*cfg.factor*Math.sin(i*cfg.radians/total)),
cfg.h/2*(1-(parseFloat(Math.max(j.value, 0))/cfg.maxValue)*cfg.factor*Math.cos(i*cfg.radians/total))
]);
});
dataValues.push(dataValues[0]);
g.selectAll(".area")
.data([dataValues])
.enter()
.append("polygon")
.attr("class", "radar-chart-serie"+series)
.style("stroke-width", "2px")
.style("stroke", cfg.color(series))
.attr("points",function(d) {
var str="";
for(var pti=0;pti<d.length;pti++){
str=str+d[pti][0]+","+d[pti][1]+" ";
}
return str;
})
.style("fill", function(j, i){return cfg.color(series)})
.style("fill-opacity", cfg.opacityArea)
.on('mouseover', function (d){
z = "polygon."+d3.select(this).attr("class");
g.selectAll("polygon")
.transition(200)
.style("fill-opacity", 0.1);
g.selectAll(z)
.transition(200)
.style("fill-opacity", .7);
})
.on('mouseout', function(){
g.selectAll("polygon")
.transition(200)
.style("fill-opacity", cfg.opacityArea);
});
series++;
});
series=0;
var tooltip = d3.select("body").append("div").attr("class", "toolTip");
d.forEach(function(y, x){
g.selectAll(".nodes")
.data(y).enter()
.append("svg:circle")
.attr("class", "radar-chart-serie"+series)
.attr('r', cfg.radius)
.attr("alt", function(j){return Math.max(j.value, 0)})
.attr("cx", function(j, i){
dataValues.push([
cfg.w/2*(1-(parseFloat(Math.max(j.value, 0))/cfg.maxValue)*cfg.factor*Math.sin(i*cfg.radians/total)),
cfg.h/2*(1-(parseFloat(Math.max(j.value, 0))/cfg.maxValue)*cfg.factor*Math.cos(i*cfg.radians/total))
]);
return cfg.w/2*(1-(Math.max(j.value, 0)/cfg.maxValue)*cfg.factor*Math.sin(i*cfg.radians/total));
})
.attr("cy", function(j, i){
return cfg.h/2*(1-(Math.max(j.value, 0)/cfg.maxValue)*cfg.factor*Math.cos(i*cfg.radians/total));
})
.attr("data-id", function(j){return j.area})
.style("fill", "#fff")
.style("stroke-width", "2px")
.style("stroke", cfg.color(series)).style("fill-opacity", .9)
.on('mouseover', function (d){
console.log(d.area)
tooltip
.style("left", d3.event.pageX - 40 + "px")
.style("top", d3.event.pageY - 80 + "px")
.style("display", "inline-block")
.html((d.area) + "<br><span>" + (d.value) + "</span>");
})
.on("mouseout", function(d){ tooltip.style("display", "none");});
series++;
});
}
};
@hijiangtao
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Thanks for your effort, but why should the RadarChart.js keep cfg.maxValue = 100;? The setting will make customized maxValue don't work any way.

@PedroF20
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PedroF20 commented Jul 4, 2017

Why the cfg.maxValue = 100;? It limits the customisation of the radar...

@andrewsolis
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This is great. Any possibility of this being released under a license such as MIT?

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