D3 Examples - Resumé Sankey

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<!DOCTYPE html>
<head>
  <meta charset="utf-8">
  <style>
    
    div.vis {
      width: 80%;
      height:700;
      margin: 0 auto;
    }
    
    text {
      fill: #294a51;
      font-family: Monospace;
      font-size: 11px;
      pointer-events: none; }
      text.active {
        letter-spacing: 1.2px;
        font-weight: 700;
        text-transform: uppercase; }
      @media screen and (min-width: 768px) {
        text {
          font-size: 12px; } }
​
    .link {
      fill: none;
      stroke: #e9e9e9;
      stroke-opacity: 1;
      transition: all 0.3s ease-in-out; }
      .link.active {
        transition: all 0.3s ease-in-out;
        stroke-opacity: 0.4; }
        .link.active#link3 {
          stroke: #7a6364; }
        .link.active#link1 {
          stroke: #7a7863; }
        .link.active#link2 {
          stroke: #a2846a; }
        .link.active#link0 {
          stroke: #294a51; }
      .link.inactive {
        stroke-opacity: 0.3;
        transition: all 0.3s ease-in-out; }
​
    rect {
      fill: #55605a;
      stroke-width: 3px; }
      rect#id3 {
        fill: #7a6364; }
      rect#id1 {
        fill: #7a7863; }
      rect#id2 {
        fill: #a2846a; }
      rect#id0 {
        fill: #294a51; }
      rect:hover {
        cursor: pointer; }
      </style>
  <script src="https://ajax.googleapis.com/ajax/libs/jquery/2.2.0/jquery.min.js"></script>
  <script src="https://d3js.org/d3.v3.min.js"></script>
  <script src="https://d3js.org/queue.v1.min.js"></script>
    <script src="sankey.js"></script>
</head>
​
<body>
  
  <div class="vis">
    <div id="sankey"></div>
  </div>
  
  <script>
    
    $(document).ready(function(){
      
    
    
    //global variables
    var $vis = $('.vis');
    var width = $vis.width();
    var sankeyH;
    
    //check for window width to set sankeyH, width, innerR, outerR
    if ($(window).width() >= 768) {
        
        sankeyH = 600;
    } else {
        sankeyH = 450;
    }
    
    
    /****************    SVG's setup      ****************/
    //append SVG to #sankey
    var sankeySVG = d3.select('#sankey').append('svg')
        .attr({
            width: width,
            height: sankeyH
        });
    
    //append g to sankeySVG
    var sankeyG = sankeySVG.append('g')
        .attr({
            class: 'sankeyG'
        });
    
    
    /****************  Sankey setup    ****************/
    
    var sankeyGraph;
    var node;
    var link;
    var rect;
    
    // Set the sankey diagram properties
    var sankey = d3.sankey()
        .nodeWidth(10)
        .nodePadding(10)
        .size([width, sankeyH]);
​
    var sankeyPath = sankey.link();
    
    //queue data
    queue()
        .defer(d3.json, 'sankey.json')
        .await(pushData);
    
    
    
    //load data
    function pushData(error, sankeyData) {
​
        if (error) throw error;
        
        //Update global variable with sankeyData
        sankeyGraph = sankeyData;
        //draw sankey
        drawSankey();
        
    };
    
    
    /****************   Draw Sankey   ****************/
    
    //draw sankey
    function drawSankey() {
        
        sankey
            .nodes(sankeyGraph.nodes)
            .links(sankeyGraph.links)
            .layout(32);
        
        // add in the links
        link = sankeySVG.append('g').selectAll(".link")
            .data(sankeyGraph.links)
            .enter().append("path")
            .attr({
                class: 'link',
                d: sankeyPath,
                id: function(d) {
                    return 'link' + d.source.node;
                }
            })
            .style({
                'stroke-width': 2,
                'stroke-dasharray': '2,2'
            })
            .sort(function(a, b) { return b.dy - a.dy; });
        
        
        // add in the nodes
        node = sankeySVG.append('g').selectAll(".node")
            .data(sankeyGraph.nodes)
            .enter().append("g")
            .attr({
                class: 'node',
                transform: function(d) {
                    return "translate(" + d.x + "," + d.y + ")";
                }
            });
        
        //append rectangles to nodes
        rect = node.append("rect")
            .attr({
                height: function(d) {
                    return d.dy;
                },
                width: sankey.nodeWidth(),
                rx: 5,
                ry: 5,
                id: function(d, i) {
                    return 'id' + i;
                }
            })
            .on('mouseover', function(d) {
            
                //check if source or target of link are same as hovered node and set class active/inactive
                d3.selectAll('.link').classed('active', function(p) { 
                    return p.source === d || p.target === d; 
                });
                d3.selectAll('.link').classed('inactive', function(p) { 
                    return p.source !== d && p.target !== d; 
                });
                
            
                //text variables
                var nodeId = 'textId' + d.node;
                var sourceLength = d.sourceLinks.length;
                var targetLength = d.targetLinks.length;
                
                //set active class on text node of hovered element
                $('text#' + nodeId).addClass('active');
                
                //loop through source and target links to set active class on text
                if (sourceLength !== 0) {
                   for (var i = 0; i < sourceLength; i++) {
                       var tNodeId = 'textId' + d.sourceLinks[i].target.node;
                       
                       $('text#' + tNodeId).addClass('active');       
                    } 
                } else if (targetLength !== 0) {
                    for (var i = 0; i < targetLength; i++) {
                        var tNodeId = 'textId' + d.targetLinks[i].source.node;
                       
                       $('text#' + tNodeId).addClass('active');         
                    } 
                }
                            
                //set hovered node as class active
                d3.select(this).classed('active', true);
                
                
            })
            .on('mouseout', function(d) {
                
                //remove active and inactive classes
                d3.selectAll('.active').classed('active', false);
                d3.selectAll('.inactive').classed('inactive', false);
            
            });
        
        //Append text to node
        node
            .append("text")
            .attr({
                x: -20,
                y: function(d) {
                    return d.dy / 3 * 2;
                },
                dy: '.01em',
                'text-anchor': 'end',
                id: function(d) {
                    return 'textId' + d.node;
                }
            })
            .text(function(d) { return d.name; })
            .filter(function(d) {
                return d.x < width / 2;
            })
            .attr({
                y: function(d) {
                    return d.dy / 2;
                },
                x: 6 + sankey.nodeWidth(),
                'text-anchor': 'start'
            });
       
    }
        
    /****************    RESIZE FUNCTION     ****************/
    
    $(window).resize(function() {
        
        width = $vis.width();;
        
        //check for window width to set sankeyH, width, innerR, outerR
        if ($(window).width() >= 768) {
            sankeyH = 600;
        } else {
            sankeyH = 450;
        }
        
        
        //update vis SVG's height and width
        sankeySVG
            .attr({width: width, height: sankeyH});
        
        //update sankey width
        sankey
            .size([width, sankeyH]);
        
        //reset sankey
        sankey
            .nodes(sankeyGraph.nodes)
            .links(sankeyGraph.links)
            .layout(32);
        
        //Update node positioning
        node
            .attr("transform", function(d) { 
                return "translate(" + d.x + "," + d.y + ")"; 
            });
        
        //Update rect height
        d3.selectAll('rect')
            .attr("height", function(d) { return d.dy; 
            });
        
        //update links
        link
            .attr("d", sankeyPath);
        
        //update text positioning
        d3.selectAll('text')
            .attr({
                y: function(d) {
                    return d.dy / 3 * 2;
                }
            });
        
        d3.selectAll('text')
            .filter(function(d) {
                return d.x < width / 2;
            })
            .attr({
                y: function(d) {
                    return d.dy / 2;
                }
            });
        
           
        
        });     //end function resize
      
    });
    
​
  </script>
</body>
​
    