A World map with zoom / pan functionality and added markers on cities.
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World map with zoom / pan and cities
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code | city | country | lat | lon | |
---|---|---|---|---|---|
ZNZ | ZANZIBAR | TANZANIA | -6.13 | 39.31 | |
TYO | TOKYO | JAPAN | 35.68 | 139.76 | |
AKL | AUCKLAND | NEW ZEALAND | -36.85 | 174.78 | |
BKK | BANGKOK | THAILAND | 13.75 | 100.48 | |
DEL | DELHI | INDIA | 29.01 | 77.38 | |
SIN | SINGAPORE | SINGAPOR | 1.36 | 103.75 | |
BSB | BRASILIA | BRAZIL | -15.67 | -47.43 | |
RIO | RIO DE JANEIRO | BRAZIL | -22.90 | -43.24 | |
YTO | TORONTO | CANADA | 43.64 | -79.40 | |
IPC | EASTER ISLAND | CHILE | -27.11 | -109.36 | |
SEA | SEATTLE | USA | 47.61 | -122.33 |
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<!DOCTYPE html> | |
<meta charset="utf-8"> | |
<style> | |
path { | |
stroke: white; | |
stroke-width: 0.25px; | |
fill: grey; | |
} | |
</style> | |
<body> | |
<script src="http://d3js.org/d3.v3.min.js"></script> | |
<script src="http://d3js.org/topojson.v0.min.js"></script> | |
<script> | |
var width = 960, | |
height = 500; | |
var projection = d3.geo.mercator() | |
.center([0, 5 ]) | |
.scale(200) | |
.rotate([-180,0]); | |
var svg = d3.select("body").append("svg") | |
.attr("width", width) | |
.attr("height", height); | |
var path = d3.geo.path() | |
.projection(projection); | |
var g = svg.append("g"); | |
// load and display the World | |
d3.json("world-110m2.json", function(error, topology) { | |
// load and display the cities | |
d3.csv("cities.csv", function(error, data) { | |
g.selectAll("circle") | |
.data(data) | |
.enter() | |
.append("a") | |
.attr("xlink:href", function(d) { | |
return "https://www.google.com/search?q="+d.city;} | |
) | |
.append("circle") | |
.attr("cx", function(d) { | |
return projection([d.lon, d.lat])[0]; | |
}) | |
.attr("cy", function(d) { | |
return projection([d.lon, d.lat])[1]; | |
}) | |
.attr("r", 5) | |
.style("fill", "red"); | |
}); | |
g.selectAll("path") | |
.data(topojson.object(topology, topology.objects.countries) | |
.geometries) | |
.enter() | |
.append("path") | |
.attr("d", path) | |
}); | |
// zoom and pan | |
var zoom = d3.behavior.zoom() | |
.on("zoom",function() { | |
g.attr("transform","translate("+ | |
d3.event.translate.join(",")+")scale("+d3.event.scale+")"); | |
g.selectAll("circle") | |
.attr("d", path.projection(projection)); | |
g.selectAll("path") | |
.attr("d", path.projection(projection)); | |
}); | |
svg.call(zoom) | |
</script> | |
</body> | |
</html> |
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