D3 Examples - TP 6 DataViz

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<!DOCTYPE html>
​
<!-- code from https://bl.ocks.org/mbostock/4062045 -->
​
<meta charset="utf-8">
<style>
​
.links line {
  stroke: #999;
  stroke-opacity: 0.1;
  stroke-width = 0.1;
}
​
.nodes circle {
  stroke: #fff;
  stroke-width: 1px;
}
​
</style>
<svg width="800" height="500"></svg>
<script src="https://d3js.org/d3.v4.min.js"></script>
<script>
function ralentity(x) {
  return x;//Math.sqrt(20 * x); 
}
function ralentitx(y) {
  return y;//Math.sqrt(  10 * y); 
}
var radius = 15; 
var svg = d3.select("svg"),
    width = +svg.attr("width") +100,
    height = +svg.attr("height");
var decalx =0// 100
var decaly =0//350
var color = d3.scaleOrdinal(d3.schemeCategory20);
​
var simulation = d3.forceSimulation()
    .force("link", d3.forceLink().id(function(d) { return d.id; }))
                             //.strength(function(d) { return d.id; })
          
    .force("charge", d3.forceManyBody())
    .force("center", d3.forceCenter(width / 2, height / 2));
​
d3.json("dict.json", function(error, graph) {
  if (error) throw error;
​
  var link = svg.append("g")
      .attr("class", "links")
    .selectAll("line")
    .data(graph.links)
    .enter().append("line")
      .attr("stroke-width", 0.4);
​
  var node = svg.append("g")
    .attr("class", "nodes")
    .selectAll("circle")
    .data(graph.nodes)
    .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.id; });
​
  simulation
      .nodes(graph.nodes)
      .on("tick", ticked);
​
  simulation.force("link")
      .links(graph.links);
var count = 0;
  function ticked() {
    count ++;
    if (count<13){
      node
        .attr("cx", function(d) { return d.x = Math.max(radius, Math.min(width - radius, d.x)); })
        .attr("cy", function(d) { return d.y = Math.max(radius, Math.min(height - radius, d.y)); });
        
    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; });
  }}
});
​
​
  
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(0.3);
  d.fx = null;
  d.fy = null;
}
​
</script>
    