D3 Examples - Projet_DataViz_Matrice

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<!DOCTYPE html>
<head>
  <style>
    body { margin:0;position:fixed;top:0;right:0;bottom:0;left:0; }
  </style>
</head>
<script src="https://d3js.org/d3.v4.min.js" charset="utf-8"></script>
<script src="https://d3js.org/queue.v1.min.js" type="text/javascript"></script>
<script src="histogram-chart.js"></script>
<style>
  
.bar rect {
  fill: steelblue;
}
​
.bar text {
  fill: #fff;
  font: 10px sans-serif;
}
​
.axis text {
  font: 10px sans-serif;
}
​
.axis path, .axis line {
  fill: none;
  stroke: #000;
  shape-rendering: crispEdges;
}
  
.tick line {
  shape-rendering: crispEdges;
  stroke: #000;
}
​
line.minor  {
  stroke: #777;
  stroke-dasharray: 2,2;
}
​
path.domain {
  fill: none;
  stroke: black;
}
</style>
<body onload="adjacency()">
  <div>
  <input id="slider" type="range" value="2011" min="2011" max="2017" step="1" />
  <span id="annee">année</span>
</div>
<div id="vizcontainer">
  <svg width="1750" height="1000" border="1px lightgray solid" />
</div>
  <footer>
<script>
  
  //Matrice d'adjacence
  function adjacency() {
​
    queue()
    .defer(d3.csv, "index.csv")
    .defer(d3.csv, "trajets_tgv.csv")
    .await(function(error, file1, file2) { createAdjacencyMatrix(file1, file2); });
    
    function createAdjacencyMatrix(nodes,edges){
      
      var annee = 2011,
            source, target, cellule;
      
      var edgeHash = {};
      for (x in edges) {
        var id = edges[x].source + "-" + edges[x].target;
        edgeHash[id] = edges[x];
      }
      matrix = [];
      //create all possible edges
      for (a in nodes) {
        for (b in nodes) {
          var grid = {id: nodes[a].id + "-" + nodes[b].id, x: b, y: a, weight: 0};
          if (edgeHash[grid.id]) {
            grid.weight = edgeHash[grid.id].weight;
          }
          matrix.push(grid);
        }
      }
​
      var weightScale = d3.scaleLinear()
        .domain(d3.extent(function(d){ return d.weight }))
        .range([0,100])
      
      //dessin de la matrice
      d3.select("svg")
        .append("g")
        .attr("transform", "translate(220,220)")
        .attr("id", "adjacencyG")
        .selectAll("rect")
        .data(matrix)
            .enter()
        .append("rect")
        .attr("width", 15)
        .attr("height", 15)
        .attr("x", function (d) {return d.x*15})
        .attr("y", function (d) {return d.y*15})
        .style("stroke", "black")
        .style("stroke-width", "1px")
        .style("fill", "steelblue")
        .style("fill-opacity", function (d) {return d.weight*0.04; })
        .on("click", gridOver)
            .append("svg:title")
        .text(function(d, i) { return d.weight + " %"; });
      
      // Axes de la Matrice
      var scaleSize = nodes.length*15;
      var nameScale = d3.scaleBand()
                                        .domain(nodes.map(function (el) {return el.id}))
                                        .rangeRound([0,scaleSize]);
  
      xAxis = d3.axisTop(nameScale).tickSize(4);
      yAxis = d3.axisLeft(nameScale).tickSize(4);    
      
      d3.select("#adjacencyG").append("g")
        .call(xAxis)
        .selectAll("text")
        .style("text-anchor", "end")
        .attr("transform", "translate(-10,-10) rotate(90)");
​
      d3.select("#adjacencyG").append("g")
        .call(yAxis);
      
      
      // Cadre de l'Histogramme
      var svg = d3.select("svg"),
            margin = {top: 220, right: 20, bottom: 300, left: 1000},
            width = +svg.attr("width") - margin.left - margin.right,
            height = +svg.attr("height") - margin.top - margin.bottom,
            g = svg.append("g").attr("transform",
                                       "translate(" + margin.left + "," +
                                                        margin.top + ")");
      var x = d3.scaleLinear()
            .domain([0,12])
            .rangeRound([0, width]);
      
      var name = d3.scaleBand()
                   .domain(["Janvier", "Fevrier", "Mars", "Avril", "Mai", "Juin",
                            "Juillet", "Aout", "Septembre", "Octobre", "Novembre",
                            "Decembre"])
                    .rangeRound([0,width]);
​
       xAxis = d3.axisBottom(name).tickSize(4);
      
       var y = d3.scaleLinear()
                  .domain([0, d3.max(edges, function(d) {
                                return d.weight; })])
                  .range([height, 0]);
   
      g.append("g")
       .attr("fill","white")
        .call(d3.axisLeft(y))
        .append("text")
        .attr("transform", "translate(20,0)")
        .style("text-anchor", "start") 
        .attr("fill","Black")
        .text("régularité");
        
      
      g.append("g")
          .attr("class", "axis axis--x")
          .attr("transform", "translate(0," + height + ")")
          .call(xAxis);
      
      // Gestion du clique sur la matrice
      function gridOver(d,i){
        d3.selectAll("rect")
          .style("stroke-width", function (p) {
          return p.x == d.x || p.y == d.y ? "3px" : "1px"})
        
        var villes = d.id.split("-");
        source = villes[0];
        target = villes[1];
        cellule = d;
        drawHistogram(cellule);
      };
      
      // Slider pour l'année
      // Mise à jour de l'histogramme en fonction de sa valeur
      d3.select("#slider").on("input", function() {
                                                                updateHistogram(+this.value);
                                                                });
      
        function updateHistogram(value) {
                    d3.select('#annee').html(value);
          annee = value;
          drawHistogram(cellule)
                };
 
         
        //Histogramme
        function drawHistogram(){
        // ! \\ annee et trajet à définir via curseur et matrice
        var filtre = edges.filter( function(d) {
                            return ((d.annee == annee)
                             && (d.source == source)
                             && (d.target == target));
                            });
        
                g.selectAll(".bar").remove();
​
          if(filtre.length > 0) {
            var bar = g.selectAll(".bar")
              .data(filtre)
              .enter().append("g")
              .attr("class", "bar")
              .attr("transform", function(d) {
                                  return "translate(" + x(d.mois-1)
                                  + "," + y(d.weight) + ")"; });
​
            bar.append("rect")
                .attr("x", 1)
                .attr("width", x(filtre[0].mois) - x(filtre[0].mois-1) - 1)
                .attr("height", function(d) { return height - y(d.weight); });
            
            bar.append("text")
                .attr("dy", ".75em")
                .attr("y", 6)
                .attr("x", (x(filtre[0].mois) - x(filtre[0].mois-1)) / 2)
                .attr("text-anchor", "middle")
                .text(function(d) { return d.weight; });
          }
        };
        };
    }
​
  </script>
  </footer>
</body>
​
    