Skip to content

Instantly share code, notes, and snippets.

@creativepsyco
Forked from mbostock/.block
Created December 2, 2012 07:59
Show Gist options
  • Star 0 You must be signed in to star a gist
  • Fork 0 You must be signed in to fork a gist
  • Save creativepsyco/4187660 to your computer and use it in GitHub Desktop.
Save creativepsyco/4187660 to your computer and use it in GitHub Desktop.
World Countries
Display the source blob
Display the rendered blob
Raw
Sorry, something went wrong. Reload?
Sorry, we cannot display this file.
Sorry, this file is invalid so it cannot be displayed.
<!DOCTYPE html>
<meta charset="utf-8">
<style>
.country {
fill: #b8b8b8;
stroke: #fff;
stroke-width: .5px;
stroke-linejoin: round;
}
.graticule {
fill: none;
stroke: #000;
stroke-opacity: .3;
stroke-width: .5px;
}
.graticule-outline {
fill: none;
stroke: #333;
stroke-width: 1.5px;
}
text {
font-family: "Helvetica Neue", Helvetica, Arial, sans-serif;
font-size: 18px;
font-weight: bold;
text-anchor: middle;
}
</style>
<body>
<script src="http://d3js.org/d3.v3.min.js"></script>
<script src="http://d3js.org/topojson.v0.min.js"></script>
<script>
var width = 960,
height = 500;
var centroid = d3.geo.path()
.projection(function(d) { return d; })
.centroid;
var projection = d3.geo.orthographic()
.scale(248)
.clipAngle(90);
var path = d3.geo.path()
.projection(projection);
var graticule = d3.geo.graticule()
.extent([[-180, -90], [180 - .1, 90 - .1]]);
var svg = d3.select("body").append("svg")
.attr("width", width)
.attr("height", height);
var line = svg.append("path")
.datum(graticule)
.attr("class", "graticule")
.attr("d", path);
svg.append("circle")
.attr("class", "graticule-outline")
.attr("cx", width / 2)
.attr("cy", height / 2)
.attr("r", projection.scale());
var title = svg.append("text")
.attr("x", width / 2)
.attr("y", height * 3 / 5);
d3.json("readme-world-110m.json", function(error, world) {
var countries = topojson.object(world, world.objects.countries).geometries,
i = -1,
n = countries.length;
var country = svg.selectAll(".country")
.data(countries)
.enter().insert("path", ".graticule")
.attr("class", "country")
.attr("d", path);
step();
function step() {
if (++i >= n) i = 0;
title.text(countries[i].id);
country.transition()
.style("fill", function(d, j) { return j === i ? "red" : "#b8b8b8"; });
d3.transition()
.delay(250)
.duration(1250)
.tween("rotate", function() {
var point = centroid(countries[i]),
rotate = d3.interpolate(projection.rotate(), [-point[0], -point[1]]);
return function(t) {
projection.rotate(rotate(t));
country.attr("d", path);
line.attr("d", path);
};
})
.transition()
.each("end", step);
}
});
</script>
Sign up for free to join this conversation on GitHub. Already have an account? Sign in to comment