Example from Rich Donohue's maptimeLEX meetup on D3-based mapping.
Created
September 2, 2015 03:33
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First D3 Building Block
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<html> | |
<head> | |
<meta charset="utf-8"> | |
<title>A D3 map with basic interaction</title> | |
<script src="https://cdnjs.cloudflare.com/ajax/libs/d3/3.5.5/d3.min.js"></script> | |
<script src="https://rawgit.com/maptimelex/d3-mapping/gh-pages/d3-map01-starter/ky-counties.js"></script> | |
<link href="http://fonts.googleapis.com/css?family=Montserrat" rel="stylesheet" type="text/css"> | |
<style> | |
body { | |
padding: 0; | |
margin: 0; | |
background: whitesmoke; | |
} | |
h1, h2 { | |
position: absolute; | |
left: 20px; | |
top: 10px; | |
font-family: "Proxima Nova", Montserrat, sans-serif; | |
font-size: 2em; | |
font-weight: 100; | |
color: #005DAA; /* offical UK Kentucky blue */ | |
} | |
h2 { | |
top: 50px; | |
font-size: 1.6em; | |
} | |
.county { | |
stroke: #fff; | |
fill:#005DAA; | |
} | |
.hover { | |
fill: yellow; | |
} | |
</style> | |
</head> | |
<body> | |
<h1>Kentucky Counties</h1> | |
<h2></h2> | |
<script> | |
var width = window.innerWidth, | |
height = window.innerHeight; | |
var svg = d3.select( "body" ) | |
.append( "svg" ) | |
.attr( "width", width ) | |
.attr( "height", height ); | |
var projection = d3.geo.albers() | |
.center([0, 37.8]) | |
.rotate([85.8,0]) | |
.scale(8000) | |
.translate([width / 2, height / 2]); | |
var geoPath = d3.geo.path() | |
.projection(projection); | |
svg.append("g") | |
.selectAll("path") | |
.data(counties.features) | |
.enter() | |
.append("path") | |
.attr( "d", geoPath ) | |
.attr("class","county") | |
.on("mouseover", function(d){ | |
d3.select("h2").text(d.properties.NAME); | |
d3.select(this).attr("class","county hover"); | |
}) | |
.on("mouseout", function(d){ | |
d3.select("h2").text(""); | |
d3.select(this).attr("class","county"); | |
}); | |
</script> | |
</body> | |
</html> | |
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