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alicemontel

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DataViz_TP4

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forked from aurelient's block:

forked from aurelient's block:

<!DOCTYPE html>
<head>
  <meta charset="utf-8">
  <script src="https://d3js.org/d3.v4.min.js"></script>
  <style> 
    .hidden {
        display: none;
    }
    div.tooltip {
        color: #222;
        background-color: #fff;
        padding: .5em;
        text-shadow: #f5f5f5 0 1px 0;
        border-radius: 2px;
        opacity: 0.9;
        position: absolute;
      	border : solid 2px;
    }
    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="52" step="1"/>
  			<span id="week"></span>
			</div>
  <script>
    
		var width = 700,
  		  height = 580;

var svg = d3.select( "body" )
  		.append( "svg" )
		  .attr( "width", width )
		  .attr( "height", height );
    
    // add color range 
    var color = d3.scaleQuantize()  
    	.range(["rgb(237,248,233)",
							"rgb(186,228,179)",
              "rgb(116,196,118)",
              "rgb(49,163,84)",
              "rgb(0,109,44)"]);
    
    // French map centered 
    var projection = d3.geoConicConformal().center([2.454071, 46.279229]).scale(2800);

var path = d3.geoPath() // d3.geo.path avec d3 version 3
                 .projection(projection);
  
    // area with name and value for each region
    var tooltip = d3.select('body').append('div')
            .attr('class', 'hidden tooltip');
    
    //Little function to print "Inconnu" instead of undefined
    // just because I think it looks better :) 
    function known(d,week){
      if(d.properties.tab == undefined){
                        var val = "Inconnu";
                      }else{
                        var val = d.properties.tab[week];
                      }
      return val};
    
   
   	d3.csv("GrippeFrance2014.csv", function(data) {
      var France
      
 			color.domain([0, 200]);
      
      var weeksArray = Object.keys(data[0]);
      
    	d3.json("regions.json", function(json) {
        // first value for slider
        d3.select('#week').html(Object.keys(data[0])[1]);
        // update when needed 
        d3.select("#slider").on("input", function() {
					updateViz(+this.value);
				});
       		
      	//On fusionne les donnees avec le GeoJSON des regions
      	for (var i = 0; i < data.length; i++) { 
      		for (var j = 0; j< json.features.length; j++){
        		//find name dataRegion in json file 
        		var jsonRegion = json.features[j].properties.nom;
         	  if (data[i].region == jsonRegion) {
           	  json.features[j].properties.tab =  Object.values(data[i]);
             	//stop because result found
               break;
            }
       		}
      	}  
      
       France = json
       
       svg.selectAll("path")
          .data(json.features)
          .enter()
          .append("path")
          .attr("d", path);
        
        drawMap(1);
      });
    
    
      // UPDATE : week and map 
    	function updateViz(val){
      	d3.select('#week').html(weeksArray[val]);
      	drawMap(val); 
    	};
    
    
     // FONCTION DRAWMAP STARTS HERE 
    	function drawMap(value){ 
        
      	carte = svg.selectAll("path")
    			.data(France.features)
        	.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')
                        .html(d.properties.nom +"<br/>"+ known(d,value));
                })
         	.on('mouseout', function() {
                    tooltip.classed('hidden', true);
                });

//update map 
       	carte 
          .attr("class","update")
        	.style("fill", function(d) {
                // get value found above
                var tab = d.properties.tab;
                if (tab) {
                    return color(tab[value]);
                } else { 
                   	// if no value matching, other color 
                    return "#ccc";
                }
            })
        	
        
      // draw map for the 1st time 
      carte.selectAll("path")
        	.enter()
      		.data(France.features)
    			.append("path")
    			.attr("class", "enter")
      		.attr("d", path)
      		.style("fill", function(d) {
                // get value found above
                var tab = d.properties.tab;
                if (tab) {  
                		return color(tab[value]);
                } else { 
                   	// if no value matching, other color 
                    return "#ccc";
                }
            })
      }
    	//DRAWMAP ENDS HERE
    });

</script>
</body>

https://d3js.org/d3.v4.min.js