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Comparison Treemap

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<!DOCTYPE html>
<meta charset="utf-8">
<style>

body {
  font: 10px sans-serif;
  position: relative;
}

.node {
  box-sizing: border-box;
  position: absolute;
  overflow: hidden;
}

.node-label {
  padding: 4px;
  line-height: 1em;
  white-space: pre;
}

.node-value {
  color: rgba(0,0,0,0.9);
  font-size: 9px;
  margin-top: 1px;
}

.tooltip  {
  line-height: 1;
  font-weight: bold;
  padding: 12px;
  background: rgba(0, 0, 0, 0.9);
  color: #fff;
  border-radius: 2px;
  pointer-events:none !important;
}

/* Creates a small triangle extender for the tooltip */
.tooltip:after {
  box-sizing: border-box;
  display: inline;
  font-size: 10px;
  width: 100%;
  line-height: 1;
  color: rgba(0, 0, 0, 0.9);
  content: "\25BC";
  position: absolute;
  text-align: center;
}

.rect {
    opacity: 0.9;
}

/* Style northward tooltips differently */
.tooltip.n:after {
  margin: -1px 0 0 0;
  top: 100%;
  left: 0;
}

</style>
<p> <input type="checkbox" id="myCheckbox">  Switch to cluster view </p>
<svg width="960" height="500"></svg>
<script src="https://d3js.org/d3.v4.js"></script>
<script src="d3-tip.js"></script>
<script>

var dataFile = 'economia_estados.csv';

d3.csv(dataFile, function(error, data){

console.log(data);
    var input = {'dataElem': formatJsonElements(data),
                 'dataClus': formatJsonClusters(data),
                 'width': 960, 'height': 600},
        canvas = setUpSvgCanvas(input);
    console.log(input.dataElem);

drawRects(input, canvas);

});

function drawRects(input, canvas) {

var params = {'input': input, 'canvas': canvas};
    initialize(params);

}

function initialize(params){

// unpacking params
    var canvas = params.canvas,
        input = params.input;

// unpacking canvas
    var svg = canvas.svg,
        width = params.width = canvas.width,
        height = params.height = canvas.height;

// transitions duration
    params.transClusterDuration = 1000;
    params.transZoomDuration = 500;

// value format
    var format = params.format = d3.formatPrefix(",.0", 1e1);

// setting up colors
    var color = params.color = d3.scaleOrdinal()
        .range(['#3E4095', '#FFCC29', '#00A859']);

// setting up treemap
    var treemap = params.treemap = d3.treemap()
        .size([width, height])
        .padding(1.2)
        .round(true);

// unpacking data correctly formatted for element view and cluster view
    var dataElem = params.input.dataElem,
        dataClus = params.input.dataClus;

// setting up hierarchy for both views
    var rootElem = params.rootElem = d3.hierarchy(dataElem)
        .sum(function(d) { return d.value; })
        .sort(function(a, b) { return b.height - a.height || b.value - a.value; });

var rootClus = params.rootClus = d3.hierarchy(dataClus)
        .sum(function(d) { return d.value; })
        .sort(function(a, b) { return b.height - a.height || b.value - a.value; });

var treeElem = params.treeElem = treemap(rootElem),
        treeClus = params.treeClus = treemap(rootClus);

// setting up tip
    var tip = params.tip = d3.tip()
      .attr('class', 'tooltip')
      .offset(function(d){
        return [d.parent.y0 - d.y0 + 7, -(d.x0 + d.x1)/2 + d.parent.x0 - 4 + (d.parent.x1 - d.parent.x0)/2];})
      .html(function(d) {
        var tip = "<div>" + d.parent.data.name + "</div>";
        d.parent.children.forEach(function(e){
            if(e.data.value > 0){
                tip += '<div> <span style="color:' + color(e.data.name) + '">' + e.data.name + ': ' + format(e.data.value) +  "</span></div>";
            }
        })
        return tip;
      })

svg.call(tip);

// both cluster view and zoom view are not the default views
    params.viewCluster = false;
    params.viewZoom = false;

// building vector with element names, the "before-last" layer
    // will be important for the drowdown menu
    var elemNames = []
    rootElem.children.forEach(function(d){ if(d.children){elemNames = elemNames.concat(d.children);}});

// creating group for individual blocks, each describing the cluster of an element
    var g = params.g = svg
        .selectAll("g")
        .data(rootElem.leaves())
        .enter()
        .append('g');

// creating rectangles
    g.append('rect')
        .attr("class", "rect")
        .attr('x', function(d) { return d.x0;})
        .attr('y', function(d) { return d.y0;})
        .attr("height", function(d) { return d.y1 - d.y0;})
        .attr("width", function(d) { return d.x1 - d.x0;})
        .style('opacity', 0.9)
        .attr('stroke', 'black')
        .attr('stroke-width', '0px')
        .attr('fill', function(d){return d.value > 0 ? color(d.data.name) : 'transparent';})
        .on('mouseover', function(d){
            g.selectAll('.rect').filter(function(e){
                return e.parent.data.name == d.parent.data.name;
            }).style('opacity', 1);
            tip.show(d);    
        })
        .on('mouseout', function(d){
            g.selectAll('.rect').filter(function(e){
                return e.parent.data.name == d.parent.data.name;
            }).style('opacity', 0.9);
            tip.hide(d);  
        })
        .on('click', function(d){ 
            params.viewZoom ? dezoom(params) : zoom(d, params);
            tip.hide(d);
        });

// creating text with element names
    // using foreignobject to insert a pure html element into svg
    g.append('foreignObject')
        .attr("class", "text")
        .attr('x', function(d) { return d.parent.x0 + 5;})
        .attr('y', function(d) { return d.parent.y0 + 2;})
        .attr("height", function(d) { return d.parent.y1 - d.parent.y0;})
        .attr("width", function(d) { return d.parent.x1 - d.parent.x0;})
        .attr('color', 'white')
        .attr('pointer-events', 'none')
        .html(function(d){
            var elemNameText = ' ';
            if(d.value > 0){
                elemNameText = '<div style="width:' + (d.parent.x1 - d.parent.x0).toString() + ';">' + d.parent.data.name.substring(d.parent.data.name.lastIndexOf(".") + 1).split(/(?=[A-Z][^A-Z])/g).join("\n") + '</div>';
            }
            return elemNameText;
        });

// create drowdown menu
    var select = d3.select("body")
    .append("div")
    .append("select")
      .on("change", onchange)

// what happens when dropdown menu is changed?
    function onchange() {
        selectedValue = d3.select('select').property('value');
        params.g.selectAll('.rect').filter(function(d){
            if(params.viewCluster){
                return d.data.name == selectedValue;
            }
            else{
                return d.parent.data.name == selectedValue;
            }})
            .transition()
            .duration(params.transZoomDuration)
            .style('opacity', 1)
            .transition()
            .duration(params.transZoomDuration)
            .style('opacity', 0.4)
            .transition()
            .duration(params.transZoomDuration)
            .style('opacity', 1)
            .transition()
            .duration(params.transZoomDuration)
            .style('opacity', 0.9);

};
    // appending data to dropdown menu
    select.selectAll("option")
      .data(elemNames.sort(function(x,y){return d3.ascending(x.data.name, y.data.name)}))
    .enter().append("option")
      .attr("selectedValue", function(d) { return d.data.name; })
      .text(function(d) { return d.data.name; });

// initialize checkbox options
    d3.select("#myCheckbox").on("change",function(){update(params);});

}

// update alternates between element and cluster view
function update(params){
    if(params.viewCluster){
        updateInElements(params);
    }
    else{
        updateInClusters(params);
    }
}

function zoom(elem, params){

// selecting other rectangles, the ones that will colapse on zooming
    var otherRects = params.g.selectAll('.rect').filter(function(d){
            return d.parent.data.name != elem.parent.data.name;})

// geometric variables to create zoom animation
    // other Rects should move away radially from source
    var centerElem = [(elem.x0 + elem.x1)/2, (elem.y0 + elem.y1)/2],
        diag = Math.sqrt(params.height * params.height + params.width * params.width);

otherRects
        .transition()
        .duration(params.transZoomDuration)
        .attr('x', function(d){
            var centerRect = [(d.x0 + d.x1)/2, (d.y0 + d.y1)/2],
                dist = [centerRect[0] - centerElem[0], centerRect[1] - centerElem[1]],
                distDiag = 0.7 * Math.sqrt(dist[0] * dist[0] + dist[1] * dist[1]);
            return d.x0 + diag * dist[0]/ distDiag;
        })
        .attr('y', function(d){
            var centerRect = [(d.x0 + d.x1)/2, (d.y0 + d.y1)/2],
                dist = [centerRect[0] - centerElem[0], centerRect[1] - centerElem[1]],
                distDiag = Math.sqrt(dist[0] * dist[0] + dist[1] * dist[1]);
            return d.y0 + diag * dist[1]/ distDiag;
        })

if(params.viewCluster){
        params.g.selectAll('.text').filter(function(d){
            return d.parent.data.name == elem.parent.data.name;
        })
            .transition()
            .duration(params.transZoomDuration)
            .attr('x', function(d){ return (d.x0 - d.parent.x0) * params.width / (d.parent.x1 - d.parent.x0);})
            .attr('y', function(d){ return (d.y0 - d.parent.y0) * params.height / (d.parent.y1 - d.parent.y0);})
    }
    else{
        params.g.selectAll('.text').filter(function(d){
            return d.parent.data.name == elem.parent.data.name;
        })
            .transition()
            .duration(params.transZoomDuration)
            .attr('x', 30)
            .attr('y', 30)
    }

if(params.viewCluster){
        params.g.selectAll('.text').filter(function(d){
        return d.parent.data.name != elem.parent.data.name;
        })
        .transition()
        .duration(params.transZoomDuration)
        .attr('x', function(d){
            var centerRect = [(d.x0 + d.x1)/2, (d.y0 + d.y1)/2],
                dist = [centerRect[0] - centerElem[0], centerRect[1] - centerElem[1]],
                distDiag = Math.sqrt(dist[0] * dist[0] + dist[1] * dist[1]);
            return d.x0 + diag * dist[0]/ distDiag;
        })
        .attr('y', function(d){
            var centerRect = [(d.x0 + d.x1)/2, (d.y0 + d.y1)/2],
                dist = [centerRect[0] - centerElem[0], centerRect[1] - centerElem[1]],
                distDiag = Math.sqrt(dist[0] * dist[0] + dist[1] * dist[1]);
            return d.y0 + diag * dist[1]/ distDiag;
        })
    }
    else{
        params.g.selectAll('.text').filter(function(d){
        return d.parent.data.name != elem.parent.data.name;
        })
        .transition()
        .duration(params.transZoomDuration)
        .attr('x', function(d){
            var centerRect = [(d.parent.x0 + d.parent.x1)/2, (d.parent.y0 + d.parent.y1)/2],
                dist = [centerRect[0] - centerElem[0], centerRect[1] - centerElem[1]],
                distDiag = Math.sqrt(dist[0] * dist[0] + dist[1] * dist[1]);
            return d.parent.x0 + diag * dist[0]/ distDiag;
        })
        .attr('y', function(d){
            var centerRect = [(d.parent.x0 + d.parent.x1)/2, (d.parent.y0 + d.parent.y1)/2],
                dist = [centerRect[0] - centerElem[0], centerRect[1] - centerElem[1]],
                distDiag = Math.sqrt(dist[0] * dist[0] + dist[1] * dist[1]);
            return d.parent.y0 + diag * dist[1]/ distDiag;
        })
    }

params.viewZoom = true;
}

if(params.viewCluster){
        params.g.selectAll('.text')
            .transition()
            .duration(params.transZoomDuration)
            .attr('x', function(d) { return d.x0;})
            .attr('y', function(d) { return d.y0;})
    }
    else{
        params.g.selectAll('.text')
            .transition()
            .duration(params.transZoomDuration)
            .attr('x', function(d) { return d.parent.x0 + 5;})
            .attr('y', function(d) { return d.parent.y0 + 2;})
    }

params.viewZoom = false;
}

// converting view to Element view
// pretty much the same thing as initialize
function updateInElements(params){

params.viewCluster = false;

var treemap = params.treemap,
        rootElem = params.rootElem,
        svg = params.canvas.svg,
        color = params.color,
        g = params.g;

svg.call(tip);

// updating group for individual blocks, each describing the cluster of an element
    g.data(rootElem.leaves(), function(d){return d.data.id;})
        .select('rect')
        .on('mouseover', function(d){
            g.filter(function(e){
                return e.parent.data.name == d.parent.data.name;
            }).select('rect').style('opacity', 1);
            tip.show(d);    
        })
        .on('mouseout', function(d){
            g.filter(function(e){
                return e.parent.data.name == d.parent.data.name;
            }).select('rect').style('opacity', 0.9);
            tip.hide(d);  
        })
        .transition()
        .duration(params.transClusterDuration)
        .attr('x', function(d) { return d.x0;})
        .attr('y', function(d) { return d.y0;})
        .attr("height", function(d) { return d.y1 - d.y0;})
        .attr("width", function(d) { return d.x1 - d.x0;})

// updating element name over block
    // adding element name over block
    g.select('.text')
        .transition()
        .duration(params.transClusterDuration)
        .attr('x', function(d) { return d.parent.x0 + 5;})
        .attr('y', function(d) { return d.parent.y0 + 2;})
        .attr("height", function(d) { return d.parent.y1 - d.parent.y0;})
        .attr("width", function(d) { return d.parent.x1 - d.parent.x0;})

}

// converting view to Cluster view
function updateInClusters(params){
    var treemap = params.treemap,
        rootClus = params.rootClus,
        svg = params.canvas.svg,
        color = params.color,
        g = params.g;

params.viewCluster = true;

var tip = params.tip
      .offset([0,10])
      .html(function(d) {
        var tipText = '<div> ' + d.data.name + ': ' + params.format(d.data.value) +  '</div>';
        return tipText;
      })

svg.call(tip);

// updating group with element names

g.data(rootClus.leaves(), function(d){return d.data.id;})
        .select('rect')
        .on('mouseover', function(d){
            g.filter(function(e){return e.data.name == d.data.name;}).select('rect')
                .style('stroke', 'black')
                .style('stroke-width', '2px')
                .style('opacity', 0.9)
            tip.show(d);
        })
        .on('mouseout', function(d){
            tip.hide(d);
            g.selectAll('rect').filter(function(e){return e.data.name == d.data.name;})
                .style('stroke-width', '0px')
                .style('opacity', 0.9);
            })
        .transition()
        .duration(params.transClusterDuration)
        .attr('x', function(d) { return d.x0;})
        .attr('y', function(d) { return d.y0;})
        .attr("height", function(d) { return d.y1 - d.y0;})
        .attr("width", function(d) { return d.x1 - d.x0;})
        .attr('fill', function(d){return d.value > 0 ? color(d.parent.data.name) : 'transparent';})

g.select('.text')
        .transition()
        .duration(params.transClusterDuration)
        .attr('x', function(d) { return d.x0;})
        .attr('y', function(d) { return d.y0;})
        .attr("height", function(d) { return d.y1 - d.y0;})
        .attr("width", function(d) { return d.x1 - d.x0;});

}

function setUpSvgCanvas(input) {
    // Set up the svg canvas
    var margin = {top: 20, right: 20, bottom: 20, left: 80},
        width = input.width - margin.left -margin.right,
        height = input.height - margin.top -margin.bottom;

var svg = d3.select('svg')
        .attr('width', width + margin.left + margin.right )
        .attr('height', height + margin.top +margin.bottom )
        .append('g')
        .attr('transform', 'translate(' + margin.left + ',' + margin.top + ')');

return {
        svg: svg,
        margin: margin,
        width: width,
        height: height
    };
}

// these functions will change the initial data to a more d3-hierarchy friendly form
// I prefer torturing the original data with it rather than torturing the code to
// accept the original data
function formatJsonElements(json){
    // first we store which is the largest cluster for this element
    var clusterNames = d3.keys(json[0]).filter(function(key) {return key !== 'estado' && key !== 'clusterLargest'; });
    for(var j=0; j < json.length; j++){
        var compare = [];
        for(var k=0; k < clusterNames.length; k++){
            compare.push(parseFloat(json[j][clusterNames[k]]))
        }
        var indexLargest = compare.indexOf(d3.max(compare)),
            clusterLargest = clusterNames[indexLargest];
        json[j]['clusterLargest'] = clusterLargest;
    }
    // we proceed to create the correct hierarchy based in that
    // HEAD -> Largest cluster -> Element -> values on clusters
    var formattedData = [];
    for(var i=0; i < clusterNames.length; i++){
        formattedData.push({'name': clusterNames[i]})
        formattedData[i]['children'] = [];
        var l = -1
        for(var j=0; j < json.length; j++){
            if(json[j]['clusterLargest'] == clusterNames[i]){
                formattedData[i]['children'].push({'name': json[j].estado})
                l += 1;
                formattedData[i]['children'][l]['children'] = []
                for(var k=0; k < clusterNames.length; k++){
                    formattedData[i]['children'][l]['children'].push({'name': clusterNames[k], 'value': parseFloat(json[j][clusterNames[k]]), 'id': json[j].estado + clusterNames[k]});
                }
            }
        }
    }
    return {'children': formattedData};
}

</script>

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