D3 Examples - Grippe 2003-2015

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<!DOCTYPE html>
<head>
  <meta charset="utf-8">
  <script src="https://d3js.org/d3.v3.min.js"></script>
  <script src="https://d3js.org/d3-queue.v1.min.js"></script>
<style>
    .regions {
        fill: #000;
        stroke: #fff;
        stroke-width: 1px;
    }
    .regions:hover {
        fill: #666;
    }
    .hidden {
        display: none;
    }
    div.tooltip {
        color: #222;
        background-color: #fff;
        padding: .5em;
        text-shadow: #f5f5f5  1px 0;
        border-radius: 2px;
        opacity:1;
        position: absolute;
    }
    body { margin:0;position:fixed;top:0;right:0;bottom:0;left:0; }
  
  </style>
</head>
​
<body>
  <div>
  <input id="slider" type="range" value="1" min="1" max="100" step="1" />
  <span id="week">week</span>
</div>
  <script>
        var width = 700,
          height = 580;
    var displayValue = d3.format(",.0f");
​
        var svg = d3.select( "body" )
        .append( "svg" )
          .attr( "width", width )
          .attr( "height", height );
​
    var projection = d3.geo.conicConformal()
              .translate([width/2, height/2])
                .center([2.454071, 46.279229]).scale(3000);
    
​
    var path = d3.geo.path()
                 .projection(projection);
   
    var color = d3.scale.quantile()  
                                .range(["rgb(237,248,233)",
                                                    "rgb(186,228,179)",
                                "rgb(116,196,118)",
                                "rgb(49,163,84)",
                                "rgb(0,109,44)"]);
    
    queue()  // permet de charger les fichiers de manière asynchrone
  .defer(d3.json, "regionsFrance.json")
  .defer(d3.csv, "GrippeFrance2003-15.csv")
  .await(processData);
    
​
function updateViz(slider){
      d3.select("#week").html("semaine du"+"\n"+ data[slider])
      
        var tooltip = d3.select('body').append('div')
                    .attr('class', 'hidden tooltip');
  
        svg.selectAll("path")
           .style("fill", function(d) {
          if( d.properties.value && d.properties.value[slider] ){
              var value = d.properties.value[slider];
        
                    if (value) {
                    return color(value);
                } }
              else {
                    return "#ccc";
                }
      })
             .on('mousemove', function(d) {
                    var mouse = d3.mouse(svg.node()).map(function(d) {
                        return parseInt(d);
                    });
          if(d.properties.value && d.properties.value[slider] ){
                 tooltip.classed('hidden', false)
                        .attr('style', 'left:' + (mouse[0] + 15) +
                                'px; top:' + (mouse[1] - 35) + 'px')
                            .style('opacity',1)
                        .html(d.properties.nom + "\n" + d.properties.value[slider]) 
                                                                                                                     }
          else {tooltip.classed('hidden', false)
                        .attr('style', 'left:' + (mouse[0] + 15) +
                                'px; top:' + (mouse[1] - 35) + 'px')
                            .style('opacity',1)
                                    .html(d.properties.nom + "\n" + "Unknown")
               }
                  
            d3.select(this).style('opacity',0.3)
              
                })
                .on('mouseout', function() {
                    tooltip.classed('hidden', true);
            d3.select(this).transition().duration(300).style('opacity',1)
          
                });
      
      
 
 ;}
    
    // On récupère la variable du slider
d3.select("#slider").on("input", function() {
                            updateViz(+this.value);
                                            });
    
    
function processData(error,francejson,grippedata) {
            data=d3.keys(grippedata[0]);  
            d3.select('#slider').attr("max", d3.keys(grippedata[0]).length-1)
     
      var min = 1000000
      var max= 0
              for (var i = 1; i < grippedata.length; i++) {
            
                            var dataState = grippedata[i].regions;       
                    var dataValue = d3.values(grippedata[i]);
               
               //on stock le max et le min des valeurs 
                for(k=0;k<dataValue.length-1;k++){
                  if(parseInt(dataValue[k])<min){
                min=parseInt(dataValue[k])
                  }
                  if(parseInt(dataValue[k])>max){
                max=parseInt(dataValue[k])
                  }                
              }
                  for (var j = 0; j < francejson.features.length; j++) {
                      var jsonState = francejson.features[j].properties.nom;
​
                      if (dataState == jsonState) {
                          //On injecte la valeur de l'Etat dans le json
                          francejson.features[j].properties.value = dataValue;
                        
​
                          //Pas besoin de chercher plus loin
                          break;
                      }
                        }  
                }
  
  
       // on définit le domaine de couleur avec le min et max des valeurs
          color.domain([min,max]);  
  
      var tooltip = d3.select('body').append('div')
                      .attr('class', 'hidden tooltip');
   
      svg.selectAll("path")
         .data(francejson.features)
         .enter()
         .append("path")
         .attr("d", path)
        ;
         
  // j'initialise la Map
      updateViz(1);
  
  // Légende
      var legend = svg.selectAll(".legend")
      .data(color.quantiles())
        .enter().append("g")
      .attr("class", "legend")
      .attr("transform", function(d, i) { return "translate(0," + i * 20 + ")"; });
​
  legend.append("rect")
      .attr("x", width - 18)
      .attr("width", 18)
      .attr("height", 18)
      .style("fill", color);
​
  legend.append("text")
      .attr("x", width - 24)
      .attr("y", 9)
      .attr("dy", ".35em")
      .style("text-anchor", "end")
      .text(function(d) { return Math.round(d);})
  
​
};
    
​
  </script>
</body>
​
    