Skip to content

Instantly share code, notes, and snippets.

Embed
What would you like to do?
D3 geo experiments
[
{
"id": 62,
"loc": [
12.34,
55.4
],
"state": 2,
"gender": 0,
"coinType": "Lisbon",
"visibilityArea": {
"lat": 55.4,
"lng": 13.340000000000014,
"radius": 1.0000000000000002
}
},
{
"id": 48,
"loc": [
10.2,
53.33
],
"state": 2,
"gender": 0,
"coinType": "Lisbon",
"visibilityArea": {
"radius": 1.0000000000000002,
"lng": 11.200000000000014,
"lat": 53.33
}
},
{
"id": 36,
"loc": [
13.25,
52.3
],
"state": 2,
"gender": 0,
"coinType": "Lisbon",
"visibilityArea": {
"radius": 3.1999999999999966,
"lng": 16.450000000000045,
"lat": 52.3
}
}
]
<!DOCTYPE html>
<meta charset="utf-8">
<style>
svg {
background: #eee;
}
.sphere {
fill: #fff;
}
.land {
fill: #000;
}
.boundary {
fill: none;
stroke: #fff;
stroke-linejoin: round;
stroke-linecap: round;
vector-effect: non-scaling-stroke;
}
.overlay {
fill: none;
pointer-events: all;
}
</style>
<script src="//d3js.org/d3.v3.min.js"></script>
<script src="//d3js.org/topojson.v1.min.js"></script>
<body>
<script>
// radius 2.5 is used for centered coin (user's coin)
function addCircleToElement (element, center, radius, style) {
element.append('circle')
.attr('cx', center.x)
.attr('cy', center.y)
.attr('r', radius)
.attr('fill', style.fill)
.attr('stroke', style.stroke)
.attr('stroke-width', style.strokeWidth)
}
</script>
<script>
var coin = {
id: 3,
loc: [
8.49,
53.5
]
};
var width = 960,
height = 960;
var projection = d3.geo.mercator()
.translate([width / 2, height / 2])
.scale((width - 1) / 2 / Math.PI);
var zoom = d3.behavior.zoom()
.scaleExtent([1, 8])
.on("zoom", zoomed);
var path = d3.geo.path()
.projection(projection);
var svg = d3.select("body").append("svg")
.attr("width", width)
.attr("height", height)
.append("g");
var g = svg.append("g");
svg.append("rect")
.attr("class", "overlay")
.attr("width", width)
.attr("height", height);
svg
.call(zoom)
.call(zoom.event);
d3.json("/mbostock/raw/4090846/world-50m.json", function(error, world) {
if (error) throw error;
g.append("path")
.datum({type: "Sphere"})
.attr("class", "sphere")
.attr("d", path);
g.append("path")
.datum(topojson.merge(world, world.objects.countries.geometries))
.attr("class", "land")
.attr("d", path);
g.append("path")
.datum(topojson.mesh(world, world.objects.countries, function(a, b) { return a !== b; }))
.attr("class", "boundary")
.attr("d", path);
});
d3.json("/stephanebachelier/raw/2dd298230d83a07027358e3dada75c49/coins.json", function(error, coins) {
if (error) throw error;
// coins should be appened as circle
// append `coin` to map and center the map on it. This is the coin owned by
// append coins to map
})
function zoomed() {
g.attr("transform", "translate(" + d3.event.translate + ")scale(" + d3.event.scale + ")");
}
d3.select(self.frameElement).style("height", height + "px");
</script>
Sign up for free to join this conversation on GitHub. Already have an account? Sign in to comment
You can’t perform that action at this time.