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I'm looking for a spider chart/radar chart for HTML/javascript that is also interactive. I would like the user to move all the endpoints and store the end result.
I have been searching for a while and although I have found some nice chart components all of them where static and could only updated using code.
448
The radar chart is also known as web chart, spider chart, spider graph, spider web chart, star chart, star plot, cobweb chart, irregular polygon, polar chart, or Kiviat diagram. It is equivalent to a parallel coordinates plot, with the axes arranged radially.
Radar Chart 3D AppearanceThe Radar Circular chart area does not support real 3D. The only property from the Area3DStyle object that affects the Radar chart is the Enable3D property. By setting Enable3D to true, the drawing style of the area background changes to give the appearance of looking down on a 3D cone.
Again, the obvious alternative is to use a bar chart, one showing multiple series of data. But if one prefers radial charts, another option is to use small multiples next to one other, while keeping categories unmoved and the minimum and maximum of the y-axis constant.
Go to the “Insert” tab in Excel. Then, in “Other Charts,” select the “Radar with Markers” chart. It will insert a blank radar chart in Excel.
Take a look at this.
This is what can be achieved with this alangrafu's code:
The example is really not interactive in the sense that you described, but it is interactive in other ways, and nothing stops you to implement the interactivity you desire, having the code from example as a good starting point.
152
An Interactive D3 Radar chart example:
index.html
<!DOCTYPE html>
<html>
<head>
<meta http-equiv="Content-Type" content="text/html;charset=utf-8"/>
<title>Radar chart</title>
<script src="http://d3js.org/d3.v3.min.js"></script>
<script src="RadarChart.js"></script>
<style>
body {
overflow: hidden;
margin: 0;
font-size: 14px;
font-family: "Helvetica Neue", Helvetica;
}
#chart {
position: absolute;
top: 50px;
left: 100px;
}
</style>
</head>
<body>
<div id="body">
<div id="chart"></div>
</div>
<script type="text/javascript" src="script.js"></script>
</body>
</html>
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.scale.category10()
};
if('undefined' !== typeof options){
for(var i in options){
if('undefined' !== typeof options[i]){
cfg[i] = options[i];
}
}
}
cfg.maxValue = Math.max(cfg.maxValue, d3.max(d, function(i){return d3.max(i.map(function(o){return o.value;}))}));
var allAxis = (d[0].map(function(i, j){return i.axis}));
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-1; 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(Format((j+1)*cfg.maxValue/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][2]+" ";
}
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;
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.axis})
.style("fill", cfg.color(series)).style("fill-opacity", .9)
.on('mouseover', function (d){
newX = parseFloat(d3.select(this).attr('cx')) - 10;
newY = parseFloat(d3.select(this).attr('cy')) - 5;
tooltip
.attr('x', newX)
.attr('y', newY)
.text(Format(d.value))
.transition(200)
.style('opacity', 1);
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(){
tooltip
.transition(200)
.style('opacity', 0);
g.selectAll("polygon")
.transition(200)
.style("fill-opacity", cfg.opacityArea);
})
.append("svg:title")
.text(function(j){return Math.max(j.value, 0)});
series++;
});
//Tooltip
tooltip = g.append('text')
.style('opacity', 0)
.style('font-family', 'sans-serif')
.style('font-size', '13px');
}
};
Script.js
var w = 500,
h = 500;
var colorscale = d3.scale.category10();
//Legend titles
var LegendOptions = ['Smartphone','Tablet'];
//Data
var d = [
[
{axis:"Email",value:0.59},
{axis:"Social Networks",value:0.56},
{axis:"Internet Banking",value:0.42},
{axis:"News Sportsites",value:0.34},
{axis:"Search Engine",value:0.48},
{axis:"View Shopping sites",value:0.14},
{axis:"Paying Online",value:0.11},
{axis:"Buy Online",value:0.05},
{axis:"Stream Music",value:0.07},
{axis:"Online Gaming",value:0.12},
{axis:"Navigation",value:0.27},
{axis:"App connected to TV program",value:0.03},
{axis:"Offline Gaming",value:0.12},
{axis:"Photo Video",value:0.4},
{axis:"Reading",value:0.03},
{axis:"Listen Music",value:0.22},
{axis:"Watch TV",value:0.03},
{axis:"TV Movies Streaming",value:0.03},
{axis:"Listen Radio",value:0.07},
{axis:"Sending Money",value:0.18},
{axis:"Other",value:0.07},
{axis:"Use less Once week",value:0.08}
],[
{axis:"Email",value:0.48},
{axis:"Social Networks",value:0.41},
{axis:"Internet Banking",value:0.27},
{axis:"News Sportsites",value:0.28},
{axis:"Search Engine",value:0.46},
{axis:"View Shopping sites",value:0.29},
{axis:"Paying Online",value:0.11},
{axis:"Buy Online",value:0.14},
{axis:"Stream Music",value:0.05},
{axis:"Online Gaming",value:0.19},
{axis:"Navigation",value:0.14},
{axis:"App connected to TV program",value:0.06},
{axis:"Offline Gaming",value:0.24},
{axis:"Photo Video",value:0.17},
{axis:"Reading",value:0.15},
{axis:"Listen Music",value:0.12},
{axis:"Watch TV",value:0.1},
{axis:"TV Movies Streaming",value:0.14},
{axis:"Listen Radio",value:0.06},
{axis:"Sending Money",value:0.16},
{axis:"Other",value:0.07},
{axis:"Use less Once week",value:0.17}
]
];
//Options for the Radar chart, other than default
var mycfg = {
w: w,
h: h,
maxValue: 0.6,
levels: 6,
ExtraWidthX: 300
}
//Call function to draw the Radar chart
//Will expect that data is in %'s
RadarChart.draw("#chart", d, mycfg);
////////////////////////////////////////////
/////////// Initiate legend ////////////////
////////////////////////////////////////////
var svg = d3.select('#body')
.selectAll('svg')
.append('svg')
.attr("width", w+300)
.attr("height", h)
//Create the title for the legend
var text = svg.append("text")
.attr("class", "title")
.attr('transform', 'translate(90,0)')
.attr("x", w - 70)
.attr("y", 10)
.attr("font-size", "12px")
.attr("fill", "#404040")
.text("What % of owners use a specific service in a week");
//Initiate Legend
var legend = svg.append("g")
.attr("class", "legend")
.attr("height", 100)
.attr("width", 200)
.attr('transform', 'translate(90,20)')
;
//Create colour squares
legend.selectAll('rect')
.data(LegendOptions)
.enter()
.append("rect")
.attr("x", w - 65)
.attr("y", function(d, i){ return i * 20;})
.attr("width", 10)
.attr("height", 10)
.style("fill", function(d, i){ return colorscale(i);})
;
//Create text next to squares
legend.selectAll('text')
.data(LegendOptions)
.enter()
.append("text")
.attr("x", w - 52)
.attr("y", function(d, i){ return i * 20 + 9;})
.attr("font-size", "11px")
.attr("fill", "#737373")
.text(function(d) { return d; })
;
Live Example: http://bl.ocks.org/nbremer/6506614
41
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