d3-hexjson
Version:
Generate hexmaps from data that uses the Open Data Institute's HexJSON format.
90 lines (75 loc) • 2.05 kB
HTML
<html>
<head>
<style>
.vis {
margin: 0;
padding: 0;
text-align: center;
font-family: sans-serif;
font-size: 10pt;
}
</style>
</head>
<body>
<div id="oddr" class="vis"><p>Odd R</p></div>
<div id="evenr" class="vis"><p>Even R</p></div>
<div id="oddq" class="vis"><p>Odd Q</p></div>
<div id="evenq" class="vis"><p>Even Q</p></div>
<script src="d3.min.js"></script>
<script src="../build/d3-hexjson.min.js"></script>
<script>
d3.json("example.hexjson", function(error, hexjson) {
var oddr = {id: "#oddr"},
evenr = {id: "#evenr"},
oddq = {id: "#oddq"},
evenq = {id: "#evenq"};
// Set the size and margins of the svg
var margin = {top: 10, right: 10, bottom: 10, left: 10},
width = 500 - margin.left - margin.right,
height = 420 - margin.top - margin.bottom;
hexjson.layout = "odd-r";
drawHexmap(oddr);
hexjson.layout = "even-r";
drawHexmap(evenr);
hexjson.layout = "odd-q";
drawHexmap(oddq);
hexjson.layout = "even-q";
drawHexmap(evenq);
function drawHexmap(layout) {
// Create the svg element
layout.svg = d3
.select(layout.id)
.append("svg")
.attr("width", width + margin.left + margin.right)
.attr("height", height + margin.top + margin.bottom)
.append("g")
.attr("transform", "translate(" + margin.left + "," + margin.top + ")");
// Render the hexes
var hexes = d3.renderHexJSON(hexjson, width, height);
// Bind the hexes to g elements of the svg and position them
layout.hexmap = layout.svg
.selectAll("g")
.data(hexes)
.enter()
.append("g")
.attr("transform", function(hex) {
return "translate(" + hex.x + "," + hex.y + ")";
});
// Draw the polygons around each hex's centre
layout.hexmap
.append("polygon")
.attr("points", function(hex) {return hex.points;})
.attr("stroke", "white")
.attr("stroke-width", "2")
.attr("fill", "#b0e8f0");
// Add the hex codes as labels
layout.hexmap
.append("text")
.append("tspan")
.attr("text-anchor", "middle")
.text(function(hex) {return hex.key;});
}
});
</script>
</body>
</html>