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thailand map
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license: mit |
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> | |
text.big-text{ | |
font-size: 40px; | |
font-weight: 400; | |
position:absolute; | |
top: 60px; | |
left: 20px; | |
z-index:99; | |
float:left; | |
} | |
.map-layer { | |
fill: #fff; | |
stroke: #ddd; | |
} | |
</style> | |
<body> | |
<script src="http://d3js.org/d3.v3.min.js"></script> | |
<script> | |
var width = 960, | |
height = 640, | |
centered; | |
// Define color scale | |
var color = d3.scale.linear() | |
.domain([1, 35]) | |
.clamp(true) | |
.range(['white', 'olive']); | |
var bigText = d3.select("body").append('text') | |
.classed('big-text', true); | |
var svg = d3.select("body").append("svg") | |
.attr("width", width) | |
.attr("height", height); | |
// Add background | |
svg.append('rect') | |
.style("fill", "#fff") | |
.attr('width', width) | |
.attr('height', height) | |
.on('click', clicked); | |
var g = svg.append('g'); | |
var mapLayer = g.append('g') | |
.classed('map-layer', true); | |
var xym = d3.geo.mercator(); | |
var path = d3.geo.path().projection(xym); | |
// Customize the projection to make the center of Thailand become the center of the map | |
xym.rotate([-100.6331, -13.2]); | |
xym.translate([width / 2, height / 2]); | |
xym.scale(2380); | |
d3.json("data.json", function(data) { | |
mapLayer.selectAll("path").data(data.features) | |
.enter().append("path") | |
.attr("d", path) | |
.attr('vector-effect', 'non-scaling-stroke') | |
.style("fill", fillFn) | |
.on("mouseover", mouseover) | |
.on("mouseout", mouseout) | |
.on("click", clicked) | |
}); | |
// Get province name | |
function nameFn(d){ | |
return d && d.properties ? d.properties.name + ':' + d.properties.p : null; | |
} | |
// Get province color | |
function fillFn(d){ | |
return color(popFn(d)); | |
} | |
// Get province population | |
function popFn(d){ | |
density = d && d.properties ? d.properties.p : null; | |
return density / 10; | |
} | |
function mouseover(d){ | |
d3.select(this).style('fill', '#f90'); | |
bigText.text(nameFn(d)); | |
} | |
function mouseout(d){ | |
d3.select(this).style("fill", fillFn(d)); | |
// Reset province color | |
mapLayer.selectAll('path') | |
.style('fill', function(d){return centered && d===centered ? '#D5708B' : fillFn(d);}); | |
//bigText.text(''); | |
if (centered) { | |
bigText.text(nameFn(centered)); | |
} else { | |
bigText.text(''); | |
} | |
} | |
// When clicked, zoom in | |
function clicked(d) { | |
var x, y, k; | |
// Compute centroid of the selected path | |
if (d && centered !== d) { | |
var centroid = path.centroid(d); | |
x = centroid[0]; | |
y = centroid[1]; | |
k = 4; | |
centered = d; | |
} else { | |
x = width / 2; | |
y = height / 2; | |
k = 1; | |
centered = null; | |
} | |
// Highlight the clicked province | |
mapLayer.selectAll('path') | |
.style('fill', function(d){return centered && d===centered ? '#D5708B' : fillFn(d);}); | |
// Zoom | |
g.transition() | |
.duration(750) | |
.attr('transform', 'translate(' + width / 2 + ',' + height / 2 + ')scale(' + k + ')translate(' + -x + ',' + -y + ')'); | |
} | |
</script> |
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