D3 Examples

xxxxxxxxxx
 
<!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>
    .region {
        fill: #000;
        stroke: #fff;
        stroke-width: 1px;
    }
    .region: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 );
​
    //Affichage de la carte
    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(254,229,217)',
                          'rgb(252,187,161)',
                          'rgb(252,146,114)',
                          'rgb(251,106,74)',
                          'rgb(239,59,44)',
                          'rgb(203,24,29)',
                          'rgb(153,0,13)']);
    
    //var color = d3.scale.category2();
    
    queue()  // permet de charger les fichiers de manière asynchrone
        .defer(d3.json, "regions.geojson")
        .defer(d3.csv, "GrippeFrance2003-15.csv")
        .await(processData);
       
    function updateViz(slider){
      
      d3.select("#week").html(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])
                            }
                          
                            d3.select(this).style('opacity',0.3);
              
                })
                .on('mouseout', function() {
                    tooltip.classed('hidden', true);
                        d3.select(this).style('opacity',1)
                });
      
      
   ;}
​
    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 max = 0;
       var min = 10000000;
  
     
      for (var i = 0; i < grippedata.length; i++) {
            //Nom de la region
            var dataState = grippedata[i].regions;
            
        
                //Valeur associee a la region 
            var dataValue = d3.values(grippedata[i]);    
                        
                
            
            //Recherche du min et max pour toutes les valeurs de région
            for(var x = 0; x < dataValue.length - 1; x++)
                        {   
              if(min > parseInt(dataValue[x]))
              {
                min = parseInt(dataValue[x]);    
              }
​
              if(max < parseInt(dataValue[x]))
              {
                max = parseInt(dataValue[x]);
              }
            }
​
            //Recherche de l'etat dans le GeoJSON
            for (var j = 0; j < francejson.features.length; j++) {
                var jsonState = francejson.features[j].properties.nom;
                console.log(dataState);
                console.log(jsonState);
                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;
                }
            }        
      }
        
        
        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)
         .style("opacity",1)
         .style("fill", function(d) {
              var value = d.properties.value;
        
                    if (value) {
                    return color(value);
                } else {
                    return "#ccc";
                }
              
      })
      .on('mousemove', function(d) {
                    var mouse = d3.mouse(svg.node()).map(function(d) {
                        return parseInt(d);
                    });
                    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)
                                d3.select(this).style('opacity',0.3);
              
                })
        .on('mouseout', function() {
        tooltip.classed('hidden', true);
        d3.select(this).style('opacity',1)
      });
  
  
  
        // draw legend
      var legend = svg.selectAll(".legend")
          .data(color.quantiles())
            .enter().append("g")
          .attr("class", "legend")
          .attr("transform", function(d, i) 
                { return "translate(0," + i * 20 + ")";                     });
​
      // draw legend colored rectangles
      legend.append("rect")
          .attr("x", width - 18)
          .attr("width", 18)
          .attr("height", 18)
          .style("fill", color);
​
        var valueTmp;
        var PerviousValueTmp = 0;
        var ret;
        
      // draw legend text
      legend.append("text")
          .attr("x", width - 24)
          .attr("y", 9)
          .attr("dy", ".35em")
          .style("text-anchor", "end")
          .text(function(d) { valueTmp =  Math.round(d);  
                                ret = PerviousValueTmp + 1 + "-" + valueTmp;
                                PerviousValueTmp = valueTmp;
                                return ret;})
  
        updateViz(1);
      
​
};
    
   
  
​
    
​
  </script>
</body>
​
    