mbostock/.block

## .block
license: gpl-3.0
redirect: https://observablehq.com/@d3/interrupted-boggs-eumorphic

## README.md

      
        

                
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              README.md
            
          
        
      
      
    The Boggs eumorphic projection is available as d3.geo.boggs in the geo.projection D3 plugin. It is the average of the sinusoidal and Mollweide projections. It is less commonly presented in uninterrupted form.

  

  

## index.html
<!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.interrupt(d3.geo.boggs.raw)
    .lobes([[ // northern hemisphere
      [[-180,   0], [-100,  90], [ -40,   0]],
      [[ -40,   0], [  30,  90], [ 180,   0]]
    ], [ // southern hemisphere
      [[-180,   0], [-160, -90], [-100,   0]],
      [[-100,   0], [ -60, -90], [ -20,   0]],
      [[ -20,   0], [  20, -90], [  80,   0]],
      [[  80,   0], [ 140, -90], [ 180,   0]]
    ]])
    .scale(156)
    .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("/mbostock/raw/4090846/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("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);
});

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

</script>

## thumbnail.png

      
        

                
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              thumbnail.png
	license: gpl-3.0
	redirect: https://observablehq.com/@d3/interrupted-boggs-eumorphic
	<!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.interrupt(d3.geo.boggs.raw)
	.lobes([[ // northern hemisphere
	[[-180, 0], [-100, 90], [ -40, 0]],
	[[ -40, 0], [ 30, 90], [ 180, 0]]
	], [ // southern hemisphere
	[[-180, 0], [-160, -90], [-100, 0]],
	[[-100, 0], [ -60, -90], [ -20, 0]],
	[[ -20, 0], [ 20, -90], [ 80, 0]],
	[[ 80, 0], [ 140, -90], [ 180, 0]]
	]])
	.scale(156)
	.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("/mbostock/raw/4090846/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("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);
	});

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

	</script>