Resampling Comparison

A comparison of the Van der Grinten projection, with and without D3’s adaptive resampling. Note the polygonal artifacts in Antarctica that are fixed with resampling.

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

body {
  background: #fcfcfa;
}

.stroke {
  fill: none;
  stroke: #000;
  stroke-width: 3px;
}

.fill {
  fill: #fff;
}

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

.land {
  fill: #222;
}

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

</style>
<body>
<script src="//d3js.org/d3.v3.min.js"></script>
<script src="//d3js.org/d3.geo.projection.v0.min.js"></script>
<script src="//d3js.org/topojson.v1.min.js"></script>
<script>

var width = 960,
    height = 500;

var projection = d3.geo.vanDerGrinten()
    .scale(72)
    .translate([0, 0])
    .precision(.1);

var position = d3.scale.ordinal()
    .domain([0, .1])
    .rangePoints([0, width], 1.02);

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 g = svg.selectAll("g")
    .data(position.domain())
  .enter().append("g")
    .attr("transform", function(d) { return "translate(" + position(d) + "," + height / 2 + ")"; });

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

g.append("use")
    .attr("class", "stroke")
    .attr("xlink:href", "#sphere");

g.append("use")
    .attr("class", "fill")
    .attr("xlink:href", "#sphere");

g.append("path")
    .datum(graticule)
    .attr("class", "graticule")
    .attr("d", path);

d3.json("/../../data/world-110m.json", function(error, world) {
  if (error) throw error;

g.insert("path", ".graticule")
      .datum(topojson.feature(world, world.objects.land))
      .attr("class", "land");

g.insert("path", ".graticule")
      .datum(topojson.mesh(world, world.objects.countries, function(a, b) { return a !== b; }))
      .attr("class", "boundary");

g.each(function(d) {
    projection.precision(d);
    d3.select(this).selectAll(".land,.boundary").attr("d", path);
  });
});

</script>

Changed /mbostock/raw/4090846/world-110m.json to a local referenece

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

https://d3js.org/d3.geo.projection.v0.min.js

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