D3 v4 - Treemap by shimizu

index.html

<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8" />
<meta http-equiv="X-UA-Compatible" content="IE=edge"/>
<title>D3 v4 - treemap</title>
<style>
html, body, #graph {
  padding:0xp;
  margin:0px;
  width: 100%;
  height: 100%;
}
</style>
</head>

<body>
<div id="graph"></div>    
    
    
    
<script src="//cdnjs.cloudflare.com/ajax/libs/d3/4.1.1/d3.min.js"></script>    
<script>
!(function(){
    "use strict"

    var width,height
    var chartWidth, chartHeight
    var margin
    var svg = d3.select("#graph").append("svg")
    var chartLayer = svg.append("g").classed("chartLayer", true)
    
    
    var color = d3.scaleOrdinal()
    .range(d3.schemeCategory10
    .map(function(c) { c = d3.rgb(c); c.opacity = 0.6; return c; }));
    
    d3.csv("data.csv", cast, main)
    
    function cast(d) {
        d.value1 = +d.value1
        d.value2 = +d.value2
        return d
    }
    
    function main(data) {
        
        setSize()
        
        //トグル切り替えwrapper
        var toggle = function(){
            var fn = arguments;
            var l = arguments.length;
            var i = 0;
            return function(){
                if(l <= i) i=0;
                fn[i++]();            
            }
        }        
        
        //読み込みデータを構造化
        var stratify = d3.stratify()
            .parentId(function(d) {return d.id.substring(0, d.id.lastIndexOf(".")); });
        
        //切り替え用に２種類のデータを生成する
        var root1 = stratify(data).sum(function(d) { return d.value1 })
        var root2 = stratify(data).sum(function(d) { return d.value2 })

        var treemap = d3.treemap()
            .size([chartWidth, chartHeight])
            .padding(1)
            .round(true);        

        //ツリーマップ座標をデータに付加        
        treemap(root2)
        treemap(root1)
        
                
        var changeDraw = toggle(function(){
                drawChart(root1)                
            },
            function(){
                drawChart(root2)                
            })
                
        setInterval(changeDraw, 3000)
        changeDraw()
    
    }
    
    function setSize() {
        width = document.querySelector("#graph").clientWidth
        height = document.querySelector("#graph").clientHeight
    
        margin = {top:0, left:0, bottom:0, right:0 }
        
        
        chartWidth = width - (margin.left+margin.right)
        chartHeight = height - (margin.top+margin.bottom)
        
        svg.attr("width", width).attr("height", height)
        
        
        chartLayer
            .attr("width", chartWidth)
            .attr("height", chartHeight)
            .attr("transform", "translate("+[margin.left, margin.top]+")")
            
            
    }
    
    function drawChart(root) {

        //data bind
        var node = chartLayer
            .selectAll(".node")
            .data(root.leaves(), function(d){ return d.id })
    
        node
            .selectAll("rect")
            .data(root.leaves(), function(d){ return d.id })        
    
        node
            .selectAll("text")
            .data(root.leaves(), function(d){ return d.id })        
    
        // enter                  
        var newNode = node.enter()
            .append("g")
            .attr("class", "node")
            
        newNode.append("rect")
        newNode.append("text")
    
          
        // update   
        chartLayer
            .selectAll(".node rect")
            .transition()
            .delay(function(d,i){ return i * 100 })
            .duration(1000)
            .attr("x", function(d) { return d.x0 })
            .attr("y", function(d) { return d.y0  })
            .attr("width", function(d) { return d.x1 - d.x0 })
            .attr("height", function(d) { return d.y1 - d.y0})
            .attr("fill", function(d) { while (d.depth > 1) d = d.parent; return color(d.id); })
            
        chartLayer
            .selectAll(".node text")    
            .transition()
            .delay(function(d,i){ return i * 100 })
            .duration(1000)
            .text(function(d){return  d.id })
            .attr("y", "1.5em")
            .attr("x", "0.5em")
            .attr("font-size", "0.6em")
            .attr("transform", function(d){ return "translate("+[d.x0, d.y0]+")" })
        
    }
}());
</script>    
</body>
</html>

data.csv

id,value1,value2
日本,
日本.群馬県,
日本.群馬県.高崎市,100,2000
日本.群馬県.前橋市,200,1000
日本.群馬県.桐生市,130,3000
日本.埼玉県,
日本.埼玉県.さいたま市,140,3200
日本.埼玉県.所沢市,210,2400
日本.東京都,
日本.東京都.千代田区,
日本.東京都.千代田区.大手町,220,1000