D3 Examples - Snowden's Route

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<!DOCTYPE html>
<meta charset="utf-8">
<style>
​
body {
  background: #fcfcfa;
}
​
.stroke {
  fill: none;
  stroke: #999;
  stroke-width: 3px;
}
​
.fill {
  fill: #fff;
}
​
.graticule {
  fill: none;
  stroke: #ddd;
  stroke-width: .5px;
  stroke-opacity: .5;
}
​
.land {
  fill: #ddd;
}
​
.boundary {
  fill: none;
  stroke: #fff;
  stroke-width: .5px;
}
​
.points circle {
  fill: #fff;
  stroke: red;
  stroke-width: 2px;
}
​
.points text {
  font: 11px sans-serif;
  text-anchor: middle;
  text-shadow: 0 1px 0 #fff, 0 -1px 0 #fff, 1px 0 0 #fff, -1px 0 0 #fff;
}
​
.route {
  fill: none;
  stroke: red;
  stroke-width: 3px;
}
​
.possible-route {
  stroke-dasharray:5, 5;
  fill: none;
  stroke: red;
  stroke-width: 3px;
}
​
.arrowHead{
  fill:red;
}
</style>
<body>
<script src="https://d3js.org/d3.v3.min.js"></script>
<script src="https://d3js.org/d3.geo.projection.v0.min.js"></script>
<script src="https://d3js.org/topojson.v1.min.js"></script>
<script>
​
var width = 960,
    height = 570;
​
var places = {
  HNL: [-157 - 55 / 60 - 21 / 3600, 21 + 19 / 60 + 07 / 3600],
  HKG: [113 + 54 / 60 + 53 / 3600, 22 + 18 / 60 + 32 / 3600],
  SVO: [37 + 24 / 60 + 53 / 3600, 55 + 58 / 60 + 22 / 3600],
  HAV: [-82 - 24 / 60 - 33 / 3600, 22 + 59 / 60 + 21 / 3600],
  CCS: [-66 - 59 / 60 - 26 / 3600, 10 + 36 / 60 + 11 / 3600],
  UIO: [-78 - 21 / 60 - 31 / 3600, 0 + 06 / 60 + 48 / 3600]
};
​
​
var routes = {
  known:[
    [ places.HNL, places.HKG ],
    [ places.HKG, places.SVO ]
  ],
  possible:[
    [ places.SVO, places.HAV ],    
    [ places.HAV, places.CCS ],
    [ places.CCS, places.UIO ]
  ]
};
​
var projection = d3.geo.kavrayskiy7()
    .scale(170)
    .rotate([-40, 0])
    .translate([width / 2, height / 2])
    .precision(.1);
​
var path = d3.geo.path()
    .projection(projection);
​
var graticule = d3.geo.graticule();
​
var svg = d3.select("body").append("svg")
    .attr("width", width)
    .attr("height", height);
​
svg.append("defs").append("path")
    .datum({type: "Sphere"})
    .attr("id", "sphere")
    .attr("d", path);
​
d3.select("defs")
  .append("marker")
    .attr("id", "arrow")
    .attr("viewBox", "0 -5 10 10")
    .attr("refX", 15)
    .attr("refY", 0)
    .attr("markerWidth", 4)
    .attr("markerHeight", 4)
    .attr("orient", "auto")
    .append("path")
      .attr("d", "M0,-5L10,0L0,5")
      .attr("class","arrowHead");
​
​
svg.append("use")
    .attr("class", "stroke")
    .attr("xlink:href", "#sphere");
​
svg.append("use")
    .attr("class", "fill")
    .attr("xlink:href", "#sphere");
​
svg.append("path")
    .datum(graticule)
    .attr("class", "graticule")
    .attr("d", path);
​
for(var i=0;i<routes.known.length;i++){
  svg.append("path")
      .datum({
        type:"LineString",
        coordinates:routes.known[i]
      })
      .attr("class", "route")
      .attr("d", path)
      .attr("marker-end", "url(#arrow)");
}
​
for(var i=0;i<routes.possible.length;i++){
  svg.append("path")
      .datum({
        type:"LineString",
        coordinates:routes.possible[i]
      })
      .attr("class", "possible-route")
      .attr("d", path)
      .attr("marker-end", "url(#arrow)");
}
​
var point = svg.append("g")
    .attr("class", "points")
  .selectAll("g")
    .data(d3.entries(places))
  .enter().append("g")
    .attr("transform", function(d) { return "translate(" + projection(d.value) + ")"; });
​
point.append("circle")
    .attr("r", 4.5);
​
point.append("text")
    .attr("y", 10)
    .attr("dy", ".71em")
    .text(function( d ) { return d.key; });
​
d3.json("/../../data/world-50m.json", function(error, world) {
  svg.insert("path", ".graticule")
      .datum(topojson.feature(world, world.objects.land))
      .attr("class", "land")
      .attr("d", path);
​
  svg.insert("path", ".graticule")
      .datum(topojson.mesh(world, world.objects.countries, function(a, b) { return a !== b; }))
      .attr("class", "boundary")
      .attr("d", path);
});
​
d3.select(self.frameElement).style("height", height + "px");
​
</script>
    