D3 Examples - TP Projet

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<!DOCTYPE html>
<meta charset="utf-8">
<style>
​
.links line {
  stroke: #999;
  stroke-opacity: 0.6;
}
​
.nodes circle {
  stroke: #fff;
  stroke-width: 1.5px;
}
​
</style>
<svg width="960" height="600"></svg>
<script src="https://d3js.org/d3.v4.min.js"></script>
<script>
​
var svg = d3.select("svg"),
    width = +svg.attr("width"),
    height = +svg.attr("height");
  
var color = d3.scaleOrdinal(d3.schemeCategory20); 
  
var simulation = d3.forceSimulation()
    .force("link", d3.forceLink().id(function(d) { return d.id; }))
    .force("charge", d3.forceManyBody())
    .force("center", d3.forceCenter(width / 2, height / 2));
​
​
d3.csv("recommandations.csv", function(data){
    var links = [];
    var nodes = new Set();
    for (var i=0; i< data.length; i++){
      links.push({artist: data[i].Antecedant, recommendation: data[i].Consequence, support: data[i].ItemSetSupport});
      nodes.add(data[i].Antecedant);
      nodes.add(data[i].Consequence);
  
    }
  
  
  var nodesArray = Array.from(nodes).map(function(e){return {artist: e}});
  console.log(nodesArray[0]);
  
   var link = svg.append("g")
      .attr("class", "links")
    .selectAll("line")
    .data(links)
    .enter().append("line")
      .attr("stroke-width", function(d) { return 1; });
  
  var node = svg.append("g")
      .attr("class", "nodes")
    .selectAll("circle")
    .data(nodesArray)
    .enter().append("circle")
      .attr("r", 5)
      //.attr("fill", function(d) { return color(d.group); })
      .call(d3.drag()
          .on("start", dragstarted)
          .on("drag", dragged)
          .on("end", dragended));
​
  node.append("title")
      .text(function(d) { return d.artist; });
​
   simulation
      .nodes(nodesArray)
      .on("tick", ticked);
​
  simulation.force("link")
      .links(links);
​
  function ticked() {
    link
        .attr("x1", function(d) { return d.source.x; })
        .attr("y1", function(d) { return d.source.y; })
        .attr("x2", function(d) { return d.target.x; })
        .attr("y2", function(d) { return d.target.y; });
​
    node
        .attr("cx", function(d) { return d.x; })
        .attr("cy", function(d) { return d.y; });
  }
  
  });
  
  
function dragstarted(d) {
  if (!d3.event.active) simulation.alphaTarget(0.3).restart();
  d.fx = d.x;
  d.fy = d.y;
}
​
function dragged(d) {
  d.fx = d3.event.x;
  d.fy = d3.event.y;
}
​
function dragended(d) {
  if (!d3.event.active) simulation.alphaTarget(0);
  d.fx = null;
  d.fy = null;
} 
​
​
​
</script>
    