D3 Examples - Map #1

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<!DOCTYPE html>
<head>
  <meta charset="utf-8">
  <script src="https://d3js.org/d3.v4.min.js"></script>
  <script src="//d3js.org/topojson.v1.min.js"></script>
​
  <style>
    body { margin:0;position:fixed;top:0;right:0;bottom:0;left:0; }
  </style>
</head>
​
<body>
  <script>
    var width = 960,
    height = 1160;
​
var svg = d3.select("body").append("svg")
    .attr("width", width)
    .attr("height", height);
 
d3.json("lan.json", function(error, geo) {
  var center = d3.geoCentroid(geo);
  console.log(center);
  console.log(geo);
  var groups = svg.selectAll('g')
    .data(geo.features.slice(0,1))
    .enter()
            .append('g');
  
  var projection = d3.geoMercator().center(center)
  .scale(60);
    var path = d3.geoPath().projection(projection);
  
  
  groups.append("path")
    .attr('stroke', 'goldenrod')
    .attr("d", path);
  
  groups.append('text')
    .attr('x', function(d) { return d3.geoCentroid(d)[0]; })
    .attr('y', function(d) { return d3.geoCentroid(d)[1]; })
    .text('*')
    
});
     
​
  </script>
</body>
​
    