Mastodon instances TreeMap by shimizu

index.html

<!DOCTYPE html>
<meta charset="utf-8">
<title>Mastodon instances  TreeMap</title>
<style>

body {
  font: 10px sans-serif;
  margin: 3px;
  position: relative;
}

.node {
  position: absolute;
  overflow: hidden;
  padding: 3px;
  border: 1px solid #666;
  box-shadow: 0 2px 3px rgba(0,0,0,0.4);
  box-sizing: border-box;
}

.node--internal {
  font-weight: bold;
}

.node--hover {
  padding: 2px;
  border: solid 1px #000;
}

#info {
	padding: 4px;
	margin: auto;
	position: absolute;
	top:0px;
	right: 0px;
	width: 150px;
	height: 20px;
	background-color:white;
	z-index: 999999;
}

</style>
<body>
<div id="info">update</div>	  
  
<script src="//cdnjs.cloudflare.com/ajax/libs/d3/4.3.0/d3.min.js"></script>    
<script>

var width = 960,
    height = 1060,
    offset = 3;
var format = d3.format(",d");

var normalization = d3.scaleLinear();
var color =  d3.scaleOrdinal(d3.schemeCategory20);

var stratify = d3.stratify()
    .parentId(function(d) { /*console.log(d.id.substring(0, d.id.lastIndexOf("."))); */return d.id.substring(0, d.id.lastIndexOf(".")); });

var stratify2 = d3.stratify()
    .parentId(function(d) { return d.id.substring(0, d.id.lastIndexOf(",")); });
    
    
var treemap = d3.treemap()
    .size([width, height])
    .paddingInner(1)
    .paddingOuter(offset)
    .paddingTop(function(d) { return d.depth < 3 ? 19 : offset; })
    .round(true);

d3.json("https://shimizu-mastodon-instances.s3-ap-northeast-1.amazonaws.com/mastodon/Latest.json", function(error, data) {
  if (error) throw error;
    var list =  [];
    
    d3.select("#info").text("Update: "+data.update)
    
    var parents = d3.nest()
        .key(function(d){ return d.properties.location.country })
        .map(data.features).keys().map(function(key){ return {id:"mastodon instances,"+key.toLowerCase(), country:key}})

    data.features
        .filter(function(d){ return +d.properties.Users > 10 ;})
        .forEach(function(d){
        var obj = {};
        obj.id = "mastodon instances," + d.properties.location.country + "," + d.properties.Instance;
        obj.id = obj.id.toLowerCase()
        obj.country = d.properties.location.country;
        obj.instance =  d.properties.Instance;
        obj.users = +d.properties.Users
        list.push(obj);
    });
    
    
    
    var base = ([{id:"mastodon instances"}]).concat(parents.concat(list))
    
    base.sort(function(a,b){
        if(a.id < b.id) return -1;
        if(a.id > b.id) return 1;
        return 0;                
    });

    var root = stratify2(base)
        .sum(function(d) { return d.users; })
        .sort(function(a, b) { return b.height - a.height || b.value - a.value; });

      cascade(treemap(root));
	
    d3.select("body")
    .selectAll(".node")
    .data(root.descendants())
    .enter().append("div")
      .attr("class", function(d) { return "node" + (d.children ? " node--internal" : " node--left"); })
      .attr("title", function(d) { return  d.id.substring(d.id.lastIndexOf(",") + 1).split(/(?=[A-Z][^A-Z])/g).join("\u200b") + "\n Users:" + format(d.value); })
      .style("left", function(d) { return d.x0 + "px"; })
      .style("top", function(d) { return d.y0 + "px"; })
      .style("width", function(d) { return d.x1 - d.x0 + "px"; })
      .style("height", function(d) { return d.y1 - d.y0 + "px"; })
      .style("background-color", function(d){ return color(d.data.country)})
      .each(function(d) { d.node = this; })
      .on("mouseover", hovered(true))
      .on("mouseout", hovered(false))
      .html(function(d) {
        var text = d.id.substring(d.id.lastIndexOf(",") + 1).split(/(?=[A-Z][^A-Z])/g).join("\u200b");
        var html = (d.data.instance) ? ['<a target="_blank" href="https://', d.data.instance, '">' + text + "</a>"].join("") : text ;
        return html;
    });
});
//*/
    
function cascade(root) {
  return root.eachAfter(function(d) {
    if (d.children) {
      d.heightRight = 1 + d3.max(d.children, function(c) { return c.x1 === d.x1 - offset ? c.heightRight : NaN; });
      d.heightBottom = 1 + d3.max(d.children, function(c) { return c.y1 === d.y1 - offset  ? c.heightBottom : NaN; });
    } else {
      d.heightRight =
      d.heightBottom = 0;
    }
  }).eachBefore(function(d) {
    d.x1 -= 2 * offset * d.heightRight;
    d.y1 -= 2 * offset * d.heightBottom;
  });
}

function hovered(hover) {
  return function(d) {
    d3.selectAll(d.ancestors().map(function(d) { return d.node; }))
        .classed("node--hover", hover);
  };
}

</script>
Mastodon instances TreeMap

data source

index.html
