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index.html
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<!DOCTYPE html>
<html>
<head>
<title>
OHDSI's network of co-authors
</title>
<meta charset="utf-8">
<style>
.links line {
stroke: #999;
stroke-opacity: 0.6;
}
.nodes circle {
stroke: #fff;
stroke-width: 1.5px;
}
.node text {
pointer-events: none;
font: 10px sans-serif;
}
p {
text-align: left;
vertical-align: top;
margin-top: 0;
}
tr {
vertical-align: top;
}
</style>
</head>
<body>
<h1>OHDIS's network of co-authors</h1>
<svg width="1200" height="900"></svg>
<script src="https://d3js.org/d3.v4.min.js"></script>
<script>
var svg = d3.select("svg"),
width = +svg.attr("width"),
height = +svg.attr("height");
var color = d3.scaleOrdinal(d3.schemeCategory20);
var simulation = d3.forceSimulation()
.force("link", d3.forceLink().id(function(d) { return d.id; }))
.force("charge", d3.forceManyBody().strength(-175))
.force("center", d3.forceCenter(width / 2, height / 2));
d3.json("graph.json", function(error, graph) {
if (error) throw error;
var link = svg.append("g")
.attr("class", "links")
.selectAll("line")
.data(graph.links)
.enter().append("line")
.attr("stroke-width", function(d) { return Math.sqrt(d.value); })
.style("opacity", function(d) { return 0.8-0.6/Math.sqrt(d.value); });
var node = svg.selectAll(".node")
.data(graph.nodes)
.enter().append("g")
.attr("class", "node")
.call(d3.drag()
.on("start", dragstarted)
.on("drag", dragged)
.on("end", dragended));
node.append("circle")
.attr("r", function(d) { return 1+Math.sqrt(d.size); })
.style("fill", function(d) { return d.color; })
.style("opacity", 0.5)
node.append("text")
.attr("dx", 10)
.attr("dy", ".35em")
.text(function(d) { return d.id });
simulation
.nodes(graph.nodes)
.on("tick", ticked);
simulation.force("link")
.links(graph.links);
function ticked() {
link
.attr("x1", function(d) { return d.source.x; })
.attr("y1", function(d) { return d.source.y; })
.attr("x2", function(d) { return d.target.x; })
.attr("y2", function(d) { return d.target.y; });
d3.selectAll("circle").attr("cx", function (d) {
return d.x;
})
.attr("cy", function (d) {
return d.y;
});
d3.selectAll("text").attr("x", function (d) {
return d.x;
})
.attr("y", function (d) {
return d.y;
});
}
});
function dragstarted(d) {
if (!d3.event.active) simulation.alphaTarget(0.3).restart();
d.fx = d.x;
d.fy = d.y;
}
function dragged(d) {
d.fx = d3.event.x;
d.fy = d3.event.y;
}
function dragended(d) {
if (!d3.event.active) simulation.alphaTarget(0);
d.fx = null;
d.fy = null;
}
</script>
</body>
</html>