d3-sankey demo

.gitignore

node_modules

README.md

Created using the d3-sankey plugin for D3 4.0.

Run npm install and then npm run build to create d3.min.js.

Stolen from Mike Bostock's original here.

Built with blockbuilder.org

d3.js

import {drag} from "d3-drag";
import {format} from "d3-format";
import {scaleOrdinal, schemeCategory20} from "d3-scale";
import {event, select} from "d3-selection";
import {sankey} from "d3-sankey";
import {json} from "d3-request";
import {rgb} from "d3-color";

export {
  event,
  format,
  scaleOrdinal,
  schemeCategory20,
  drag,
  select,
  sankey,
  json,
  rgb
}

d3.min.js

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JSON.parse(n.responseText)})),Xi=(pr(","),pr("\t"),{format:Lr,scaleOrdinal:Me,schemeCategory20:$i,drag:Gn,select:qn,sankey:cr,json:Ii,rgb:Ae});return Xi});

energy.json

{
  "nodes": [{
    "name": "Agricultural 'waste'"
  }, {
    "name": "Bio-conversion"
  }, {
    "name": "Liquid"
  }, {
    "name": "Losses"
  }, {
    "name": "Solid"
  }, {
    "name": "Gas"
  }, {
    "name": "Biofuel imports"
  }, {
    "name": "Biomass imports"
  }, {
    "name": "Coal imports"
  }, {
    "name": "Coal"
  }, {
    "name": "Coal reserves"
  }, {
    "name": "District heating"
  }, {
    "name": "Industry"
  }, {
    "name": "Heating and cooling - commercial"
  }, {
    "name": "Heating and cooling - homes"
  }, {
    "name": "Electricity grid"
  }, {
    "name": "Over generation / exports"
  }, {
    "name": "H2 conversion"
  }, {
    "name": "Road transport"
  }, {
    "name": "Agriculture"
  }, {
    "name": "Rail transport"
  }, {
    "name": "Lighting & appliances - commercial"
  }, {
    "name": "Lighting & appliances - homes"
  }, {
    "name": "Gas imports"
  }, {
    "name": "Ngas"
  }, {
    "name": "Gas reserves"
  }, {
    "name": "Thermal generation"
  }, {
    "name": "Geothermal"
  }, {
    "name": "H2"
  }, {
    "name": "Hydro"
  }, {
    "name": "International shipping"
  }, {
    "name": "Domestic aviation"
  }, {
    "name": "International aviation"
  }, {
    "name": "National navigation"
  }, {
    "name": "Marine algae"
  }, {
    "name": "Nuclear"
  }, {
    "name": "Oil imports"
  }, {
    "name": "Oil"
  }, {
    "name": "Oil reserves"
  }, {
    "name": "Other waste"
  }, {
    "name": "Pumped heat"
  }, {
    "name": "Solar PV"
  }, {
    "name": "Solar Thermal"
  }, {
    "name": "Solar"
  }, {
    "name": "Tidal"
  }, {
    "name": "UK land based bioenergy"
  }, {
    "name": "Wave"
  }, {
    "name": "Wind"
  }],
  "links": [{
    "source": 0,
    "target": 1,
    "value": 124.729
  }, {
    "source": 1,
    "target": 2,
    "value": 0.597
  }, {
    "source": 1,
    "target": 3,
    "value": 26.862
  }, {
    "source": 1,
    "target": 4,
    "value": 280.322
  }, {
    "source": 1,
    "target": 5,
    "value": 81.144
  }, {
    "source": 6,
    "target": 2,
    "value": 35
  }, {
    "source": 7,
    "target": 4,
    "value": 35
  }, {
    "source": 8,
    "target": 9,
    "value": 11.606
  }, {
    "source": 10,
    "target": 9,
    "value": 63.965
  }, {
    "source": 9,
    "target": 4,
    "value": 75.571
  }, {
    "source": 11,
    "target": 12,
    "value": 10.639
  }, {
    "source": 11,
    "target": 13,
    "value": 22.505
  }, {
    "source": 11,
    "target": 14,
    "value": 46.184
  }, {
    "source": 15,
    "target": 16,
    "value": 104.453
  }, {
    "source": 15,
    "target": 14,
    "value": 113.726
  }, {
    "source": 15,
    "target": 17,
    "value": 27.14
  }, {
    "source": 15,
    "target": 12,
    "value": 342.165
  }, {
    "source": 15,
    "target": 18,
    "value": 37.797
  }, {
    "source": 15,
    "target": 19,
    "value": 4.412
  }, {
    "source": 15,
    "target": 13,
    "value": 40.858
  }, {
    "source": 15,
    "target": 3,
    "value": 56.691
  }, {
    "source": 15,
    "target": 20,
    "value": 7.863
  }, {
    "source": 15,
    "target": 21,
    "value": 90.008
  }, {
    "source": 15,
    "target": 22,
    "value": 93.494
  }, {
    "source": 23,
    "target": 24,
    "value": 40.719
  }, {
    "source": 25,
    "target": 24,
    "value": 82.233
  }, {
    "source": 5,
    "target": 13,
    "value": 0.129
  }, {
    "source": 5,
    "target": 3,
    "value": 1.401
  }, {
    "source": 5,
    "target": 26,
    "value": 151.891
  }, {
    "source": 5,
    "target": 19,
    "value": 2.096
  }, {
    "source": 5,
    "target": 12,
    "value": 48.58
  }, {
    "source": 27,
    "target": 15,
    "value": 7.013
  }, {
    "source": 17,
    "target": 28,
    "value": 20.897
  }, {
    "source": 17,
    "target": 3,
    "value": 6.242
  }, {
    "source": 28,
    "target": 18,
    "value": 20.897
  }, {
    "source": 29,
    "target": 15,
    "value": 6.995
  }, {
    "source": 2,
    "target": 12,
    "value": 121.066
  }, {
    "source": 2,
    "target": 30,
    "value": 128.69
  }, {
    "source": 2,
    "target": 18,
    "value": 135.835
  }, {
    "source": 2,
    "target": 31,
    "value": 14.458
  }, {
    "source": 2,
    "target": 32,
    "value": 206.267
  }, {
    "source": 2,
    "target": 19,
    "value": 3.64
  }, {
    "source": 2,
    "target": 33,
    "value": 33.218
  }, {
    "source": 2,
    "target": 20,
    "value": 4.413
  }, {
    "source": 34,
    "target": 1,
    "value": 4.375
  }, {
    "source": 24,
    "target": 5,
    "value": 122.952
  }, {
    "source": 35,
    "target": 26,
    "value": 839.978
  }, {
    "source": 36,
    "target": 37,
    "value": 504.287
  }, {
    "source": 38,
    "target": 37,
    "value": 107.703
  }, {
    "source": 37,
    "target": 2,
    "value": 611.99
  }, {
    "source": 39,
    "target": 4,
    "value": 56.587
  }, {
    "source": 39,
    "target": 1,
    "value": 77.81
  }, {
    "source": 40,
    "target": 14,
    "value": 193.026
  }, {
    "source": 40,
    "target": 13,
    "value": 70.672
  }, {
    "source": 41,
    "target": 15,
    "value": 59.901
  }, {
    "source": 42,
    "target": 14,
    "value": 19.263
  }, {
    "source": 43,
    "target": 42,
    "value": 19.263
  }, {
    "source": 43,
    "target": 41,
    "value": 59.901
  }, {
    "source": 4,
    "target": 19,
    "value": 0.882
  }, {
    "source": 4,
    "target": 26,
    "value": 400.12
  }, {
    "source": 4,
    "target": 12,
    "value": 46.477
  }, {
    "source": 26,
    "target": 15,
    "value": 525.531
  }, {
    "source": 26,
    "target": 3,
    "value": 787.129
  }, {
    "source": 26,
    "target": 11,
    "value": 79.329
  }, {
    "source": 44,
    "target": 15,
    "value": 9.452
  }, {
    "source": 45,
    "target": 1,
    "value": 182.01
  }, {
    "source": 46,
    "target": 15,
    "value": 19.013
  }, {
    "source": 47,
    "target": 15,
    "value": 289.366
  }]
}

index.html

<!DOCTYPE html>
<html>
<meta charset="utf-8">
<title>Sankey Diagram</title>
<style>
  #chart {
    height: 500px;
  }

  .node rect {
    cursor: move;
    fill-opacity: .9;
    shape-rendering: crispEdges;
  }

  .node text {
    pointer-events: none;
    text-shadow: 0 1px 0 #fff;
  }

  .link {
    fill: none;
    stroke: #000;
    stroke-opacity: .2;
  }

  .link:hover {
    stroke-opacity: .5;
  }
</style>

<body>
  <div id="chart"></div>
  <script src="d3.min.js"></script>
  <script>
    var margin = {
        top: 1,
        right: 1,
        bottom: 6,
        left: 1
      },
      width = 960 - margin.left - margin.right,
      height = 500 - margin.top - margin.bottom;

    var formatNumber = d3.format(",.0f"),
      format = function(d) {
        return formatNumber(d) + " TWh";
      },
      color = d3.scaleOrdinal(d3.schemeCategory20);

    var svg = d3.select("#chart").append("svg")
      .attr("width", width + margin.left + margin.right)
      .attr("height", height + margin.top + margin.bottom)
      .append("g")
      .attr("transform", "translate(" + margin.left + "," + margin.top + ")");

    var sankey = d3.sankey()
      .nodeWidth(15)
      .nodePadding(10)
      .size([width, height]);

    var path = sankey.link();

    d3.json("energy.json", function(energy) {

      sankey
        .nodes(energy.nodes)
        .links(energy.links)
        .layout(32);

      var link = svg.append("g").selectAll(".link")
        .data(energy.links)
        .enter().append("path")
        .attr("class", "link")
        .attr("d", path)
        .style("stroke-width", function(d) {
          return Math.max(1, d.dy);
        })
        .sort(function(a, b) {
          return b.dy - a.dy;
        });

      link.append("title")
        .text(function(d) {
          return d.source.name + " → " + d.target.name + "\n" + format(d.value);
        });

      var node = svg.append("g").selectAll(".node")
        .data(energy.nodes)
        .enter().append("g")
        .attr("class", "node")
        .attr("transform", function(d) {
          return "translate(" + d.x + "," + d.y + ")";
        })
        .call(d3.drag()
          .subject(function(d) {
            return d;
          })
          .on("start", function() {
            this.parentNode.appendChild(this);
          })
          .on("drag", dragmove));

      node.append("rect")
        .attr("height", function(d) {
          return d.dy;
        })
        .attr("width", sankey.nodeWidth())
        .style("fill", function(d) {
          return d.color = color(d.name.replace(/ .*/, ""));
        })
        .style("stroke", function(d) {
          return d3.rgb(d.color).darker(2);
        })
        .append("title")
        .text(function(d) {
          return d.name + "\n" + format(d.value);
        });

      node.append("text")
        .attr("x", -6)
        .attr("y", function(d) {
          return d.dy / 2;
        })
        .attr("dy", ".35em")
        .attr("text-anchor", "end")
        .attr("transform", null)
        .text(function(d) {
          return d.name;
        })
        .filter(function(d) {
          return d.x < width / 2;
        })
        .attr("x", 6 + sankey.nodeWidth())
        .attr("text-anchor", "start");

      function dragmove(d) {
        d3.select(this).attr("transform", "translate(" + d.x + "," + (d.y = Math.max(0, Math.min(height - d.dy, d3.event.y))) + ")");
        sankey.relayout();
        link.attr("d", path);
      }
    });
  </script>

package.json

{
  "private": true,
  "scripts": {
    "build": "rollup -c | uglifyjs -c -m > d3.min.js"
  },
  "dependencies": {
    "d3-array": "^1.0.1",
    "d3-color": "^1.0.1",
    "d3-drag": "^1.0.1",
    "d3-format": "^1.0.2",
    "d3-request": "^1.0.2",
    "d3-sankey": "^0.4.1",
    "d3-scale": "^1.0.3",
    "d3-selection": "^1.0.2",
    "rollup": "^0.34.13",
    "rollup-plugin-node-resolve": "^2.0.0",
    "uglify-js": "^2.6.1"
  }
}

rollup.config.js

import nodeResolve from "rollup-plugin-node-resolve";

export default {
  entry: "d3.js",
  plugins: [nodeResolve({jsnext: true})],
  moduleId: "d3",
  moduleName: "d3",
  format: "umd"
};

thumbnail.png