Skip to content

Instantly share code, notes, and snippets.

@git-ashish git-ashish/index.html
Last active Dec 20, 2015

Embed
What would you like to do?
Scaling and Panning - d3.js colored world map using topojson
<!DOCTYPE html>
<meta charset="utf-8">
<style>
.graticule {
fill: none;
stroke: #777;
stroke-opacity: .5;
stroke-width: .5px;
}
.land, .country {
fill: #222;
fill: #d3d3d3;
}
.boundary {
fill: none;
stroke: #222;
stroke: #fff;
stroke-width: .5px;
}
</style>
<body>
<script src="http://d3js.org/d3.v3.min.js"></script>
<script src="http://d3js.org/topojson.v1.min.js"></script>
<script>
<!--
var w=window,d=document,e=d.documentElement,g=d.getElementsByTagName('body')[0],x=w.innerWidth||e.clientWidth||g.clientWidth,y=w.innerHeight||e.clientHeight||g.clientHeight;
//-->
var width = x-100,
height = y-100;
var projection = d3.geo.mercator()
.scale((width + 1) / 2 / Math.PI)
.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("id", "baseSvg")
.attr("width", width)
.attr("height", height);
var zoom = d3.behavior.zoom()
//.translate([margin.left, margin.top])
.scale(1)
.on("zoom", zoomed);
svg.call(zoom);
var scale0 = [1,1];
function zoomed(){
console.log(d3.event.translate[0] + ' | ' + d3.event.translate[0]/scale0[0]);
scale0 = d3.event.translate;
//console.log(d3.select("#viz-wrapper"));
d3.select("#viz-wrapper").attr("transform", "translate(" + d3.event.translate + ")scale(" + d3.event.scale + ")");
}
//svg.append("path")
var viz = svg.append("g")
.attr("id","viz-wrapper");
/*
.append("path")
.datum(graticule)
.attr("class", "graticule")
.attr("d", path);
*/
var color = d3.scale.category20();
/*
d3.json("world-50m.json", function(error, world) {
console.log(world);
viz.insert("path", ".graticule")
.datum(topojson.feature(world, world.objects.land))
.attr("class", "land")
.attr("d", path);
viz.insert("path", ".graticule")
.datum(topojson.mesh(world, world.objects.countries, function(a, b) { return a !== b; }))
.attr("class", "boundary")
.attr("d", path);
});
*/
d3.json("world-50m.json", function(error, world) {
var countries = topojson.feature(world, world.objects.countries).features,
neighbors = topojson.neighbors(world.objects.countries.geometries);
viz.selectAll(".country")
.data(countries)
.enter().insert("path", ".graticule")
//.attr("class", "country")
.attr("class", function(d){ return "country "+d.id })
.attr("d", path)
//.style("fill", function(d, i) { return color(d.color = d3.max(neighbors[i], function(n) { return countries[n].color; }) + 1 | 0); });
.style("fill", function(d,i){ return color(Math.random()*20); })
/*
viz.insert("path", ".graticule")
.datum(topojson.mesh(world, world.objects.countries, function(a, b) { return a !== b; }))
.attr("class", "boundary")
.attr("d", path);
*/
});
d3.select(self.frameElement).style("height", height + "px");
</script>
Sorry, something went wrong. Reload?
Sorry, we cannot display this file.
Sorry, this file is invalid so it cannot be displayed.
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.