Submarine Cable Map (Cahill Projection)

Inspired by Bernard J. S. Cahill's butterfly map of San Francisco trade routes.

Forked from mbostock's Waterman Polyhedron and using data from submarinecablemap.com.

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

body {
  background: #fcfcfa;
}
  
svg {
  display: block;
  margin: 0 auto;
}
  
#clip {
  fill: none;
  stroke: #000;
  stroke-width: px;
}

.stroke {
  fill: none;
  stroke: #fff;
  fill: 10px;
}

.fill {
  fill: #d9e6e3;
}

.graticule {
  fill: none;
  stroke: #777;
  stroke-width: .5px;
  stroke-opacity: .5;
}

.land {
  fill: #e4c0b8;
}

.boundary {
  fill: none;
  stroke: #fff;
  stroke-width: .5px;
}

.telegeography {
  fill: none;
  stroke: #777;
  stroke-width: .5px;
  stroke-opacity: 0.7;
}
</style>
<body>
<script src="//d3js.org/d3.v3.min.js"></script>
<script src="//d3js.org/topojson.v1.min.js"></script>
<script src="d3.geo.polyhedron.min.js"></script>
<script>

var width = 960,
    height = 550;

var projection = d3.geo.polyhedron.waterman()
    .rotate([110, 0])
    .scale(118)
    .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);

var defs = svg.append("defs");

defs.append("path")
    .datum({type: "Sphere"})
    .attr("id", "sphere")
    .attr("d", path);

defs.append("clipPath")
    .attr("id", "clip")
  .append("use")
    .attr("xlink:href", "#sphere");

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("clip-path", "url(#clip)")
    .attr("d", path);

d3.json("https://gist.githubusercontent.com/newsroomdev/73f8beefbbe424259d13/raw/4ed432ef09ba08ce32108cca702a6e347dda5d8a/world-cables-50m.json", function(error, world) {
  if (error) throw error;

svg.insert("path", ".graticule")
      .datum(topojson.feature(world, world.objects.land))
      .attr("class", "land")
      .attr("clip-path", "url(#clip)")
      .attr("d", path);

svg.insert("path", ".graticule")
      .datum(topojson.mesh(world, world.objects.countries, function(a, b) { return a !== b; }))
      .attr("class", "boundary")
      .attr("clip-path", "url(#clip)")
      .attr("d", path);
  
  svg.insert("path", ".graticule")
  		.datum(topojson.feature(world, world.objects.cables))
  		.attr("class", "telegeography")
  		.attr("clip-path", "url(#clip)")
  		.attr("d", path);
  		
});

d3.select(self.frameElement).style("height", height + "px");

</script>

https://d3js.org/d3.v3.min.js

https://d3js.org/topojson.v1.min.js