TP4-4-Tooltip-20171201

forked from aurelient's block:

forked from keikhcheung's block: TP4-4-Tooltip-20171201

<!DOCTYPE html>
<head>
  <meta charset="utf-8">
  <script src="https://d3js.org/d3.v4.min.js"></script>
  
  <style>
    body { margin:0;position:fixed;top:0;right:0;bottom:0;left:0; }
    /* Add div.tooltip which contains info upon hovering*/
    div.tooltip {
        color: #222;
        background-color: #fff;
        padding: .5em;
        text-shadow: #f5f5f5 0 1px 0;
        border-radius: 2px;
        opacity: 0.9;
        position: absolute;
    }
  </style>
</head>

<body>
  <script>
		var width = 700,
  		  height = 580;

var svg = d3.select( "body" )
  		.append( "svg" )
		  .attr( "width", width )
		  .attr( "height", height )
      // Add white boundry to region territories
      .style("stroke", "#fff")
      .style("stroke-width", "1px");

// Add var tooltip
    // and append it to body
    // and make tool tip contain .hidden tooltip
    var tooltip = d3.select('body').append('div')
      .attr("class", "hidden tooltip");
    
    // d3.geo.albersUsa changed to d3.geoConicConformal()
    var projection = d3.geoConicConformal()
    			.translate([width/2, height/2])
          // Reposition and rescale of the map base layer
          .center([2.454071, 46.279229]).scale(2800);
    
		// On definie une echelle de couleur
		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)"]);
    
    var path = d3.geoPath() // d3.geo.path avec d3 version 3
                 .projection(projection);
    
    // Chargement des donnees
		d3.csv("GrippeFrance2014.csv", function(data) {
      console.log(data) // Check link element denomination: .region

// Adjust colour range related to shown vairation scale
      color.domain([0, 200]);

// OBSOLETE Set input domain for color scale
      // OBSOLETE Link data min and max values to colour scheme
      // OBSOLETE color.domain([
        // OBSOLETE d3.min(data, function(d) { return d.value; }), 
        // OBSOLETE d3.max(data, function(d) { return d.value; })
      // OBSOLETE ]);
      
      // Inject data values in CSV table to D3 JavaScript object
      d3.json("regions.json", function(json) {
        console.log(json) // Check link element denomination: .properties.nom
        
        for (var i = 0; i < data.length; i++) {
          // Fetch all .region values which refer to region name
          // and put them in var dataRegion
          var dataRegion = data[i].region;

// OBSOLETE Fetch all values of column 'somme2014'
          // OBSOLETE and put them in var dataValue
          // OBSOLETEvar dataValue = parseFloat(data[i].somme2014); 
          // Fetch all values of columns concerning Nov 2014
          // add them
          // and put them in var dataValue
          var dataValue = parseFloat(data[i]["02/11/14"]) + parseFloat(data[i]["09/11/14"]) + parseFloat(data[i]["16/11/14"]) + parseFloat(data[i]["23/11/14"]) + parseFloat(data[i]["30/11/14"]);

//Recherche de l'etat dans le GeoJSON
            for (var j = 0; j < json.features.length; j++) {
                var jsonRegion = json.features[j].properties.nom;
                if (dataRegion == jsonRegion) {
                  //On injecte la valeur de l'Etat dans le json
                  json.features[j].properties.value = dataValue;
                  console.log(dataValue)

//Pas besoin de chercher plus loin
                  break;
                }
            }

}
        
        // Paint <PATH>
        svg.selectAll("path")
             .data(json.features)
             .enter()
             .append("path")
             .attr("d", path)
             .style("fill", function(d) {
                //on prend la valeur recupere plus haut
                var value = d.properties.value;

if (value) {
                    return color(value);
                } else { 
                    // si pas de valeur alors en gris
                    return "#ccc";
                }
            })
        
             // When mouse hovers over a region
             .on('mousemove', function(d) {
                console.log(d) // Check element to show: .properties.nom AND .properties.value         
                var mouse = d3.mouse(svg.node()).map(function(d) {
                // console.log(d)
                  return parseInt(d); 
                });
                tooltip.classed('hidden', false)
                  // CSS modification
                  .attr('style', 'left:' + (mouse[0] + 15) + 'px; top:' + (mouse[1] - 35) + 'px')
                  // Add HTML string which concatenates needed text
                  // e.g. Bretagne: 71
                  .html(d.properties.nom + ": " + d.properties.value);
              })
              .on('mouseout', function() {
                tooltip.classed('hidden', true);
              });
      });
    });
  </script>
</body>

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

https://d3js.org/topojson.v1.min.js