Last active
December 20, 2015 21:08
-
-
Save git-ashish/6194859 to your computer and use it in GitHub Desktop.
Scaling and Panning - d3.js colored world map using topojson
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
<!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> |
Sign up for free
to join this conversation on GitHub.
Already have an account?
Sign in to comment