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<head>
<meta charset="utf-8">
<script src="https://d3js.org/d3.v4.min.js"></script>
<style>
body { margin:0;position:fixed;top:0;right:0;bottom:0;left:0; }
</style>
</head>
<body>
<script>
// Feel free to change or delete any of the code you see in this editor!
var svg = d3.select("body").append("svg")
.attr("width", 960)
.attr("height", 500)
d3.json("flag_data.json", function(err, mydata) {
var g = d3.select("svg").selectAll("rect")
.data(mydata)
.enter()
.append("g")
.attr("height",function(d) {
return d.height;
})
.attr("width",function(d) {
return d.width;
})
.attr("x", function(d) {
return d.x;
})
.attr("y", function(d) {
return d.y;
})
.style("fill", function(d) {
return d.color;
});
})
</script>
</body>
https://d3js.org/d3.v4.min.js