Lambert Azimuthal Equal-Area [UNLISTED]

The Lambert azimuthal equal-area projection is available as d3.geo.azimuthalEqualArea. See also the polar aspect of this projection. This projection is also a special case B = 1 of the Hammer projection.

forked from mbostock's block: Lambert Azimuthal Equal-Area

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

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

.fill {
  fill: #fff;
}

.graticule {
  fill: none;
  stroke: #777;
  stroke-width: 0.5px;
  stroke-opacity: 0.5;
}

.land {
  fill: #222;
}

.boundary {
  fill: none;
  stroke: #fff;
  stroke-width: 0.5px;
}

</style>
<svg width="690" height="510"></svg>
<script src="//d3js.org/d3.v4.min.js"></script>
<script src="//d3js.org/topojson.v1.min.js"></script>
<script>

var svg = d3.select("svg"),
    width = +svg.attr("width"),
    height = +svg.attr("height");

var projection = d3.geoAzimuthalEqualArea()
    .scale(649)
    .translate([width / 2, height / 2])
    .precision(0.1);

var lon = -14, lat = 0, clipAngle = 28;
  
projection
    .rotate([-lon,-lat])
    .center([0,0])
    .clipAngle(clipAngle)
    .clipExtent([[40,40],[width-40,height-40]])
;

var path = d3.geoPath()
    .projection(projection);

var graticule = d3.geoGraticule();

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

svg.append("use")
    .attr("fill", "lightblue")
    .attr("xlink:href", "#sphere");

svg.append("use")
    .attr("stroke", "black")
    .attr("fill", "transparent")
    .attr("xlink:href", "#sphere");

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

d3.json("https://gist.githubusercontent.com/mbostock/4090846/raw/d534aba169207548a8a3d670c9c2cc719ff05c47/world-50m.json", function(error, world) {
  if (error) throw error;

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);
});

</script>

https://d3js.org/d3.v4.min.js

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