| height: 650 |
A redesign of the radar chart function that was created by alangrafu, used in my blog on Making the D3 Radar Chart look a bit better
An even newer version created 2 years later can be found here
forked from nbremer's block: D3.js - Radar Chart or Spider Chart - Adjusted from radar-chart-d3
forked from alandunning's block: Radar Chart D3 V4
| [ | |
| [ | |
| {"area": "Central ", "value": 80}, | |
| {"area": "Kirkdale", "value": 40}, | |
| {"area": "Kensington ", "value": 40}, | |
| {"area": "Everton ", "value": 90}, | |
| {"area": "Picton ", "value": 60}, | |
| {"area": "Riverside ", "value": 80} | |
| ] | |
| ] |
| <!DOCTYPE html> | |
| <meta charset="utf-8"> | |
| <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; | |
| } | |
| </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> |
| 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; | |
| 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){ | |
| 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'); | |
| } | |
| }; |