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<html>
<head>
<script src="https://d3js.org/d3.v4.min.js"></script>
<style>
label {
font: "Helvetica Neue", Helvetica, Arial, sans-serif;
}
</style>
</head>
<body>
<div id="networkGraph"></div>
</body>
<script>
function blogGraph(graph) {
const width = "960";
const height = "600";
const sourceRadius = 45;
const entityRadius = 35;
var svg = d3.select("#networkGraph")
.append("svg")
.attr("width", width)
.attr("height", height);
var simulation = d3.forceSimulation()
.force("link", d3.forceLink().id(function(d) { return d.id; }))
.force('charge', d3.forceManyBody()
.strength(-1900)
.theta(0.5)
.distanceMax(1500)
)
.force('collision', d3.forceCollide().radius(function(d) {
return d.radius
}))
.force("center", d3.forceCenter(document.querySelector("#networkGraph").clientWidth / 2, document.querySelector("#networkGraph").clientHeight / 2));
var defs = svg.append("defs");
defs.append("radialGradient")
.attr("id", "entity-gradient")
.attr("cx", "50%")
.attr("cy", "50%")
.attr("r", "50%")
.selectAll("stop")
.data([
{offset: "50%", color: "#ffffff"},
{offset: "100%", color: "#CCCCCC"},
])
.enter().append("stop")
.attr("offset", function(d) { return d.offset; })
.attr("stop-color", function(d) { return d.color; });
defs.append("radialGradient")
.attr("id", "source-gradient")
.selectAll("stop")
.data([
{offset: "20%", color: "#eda515"},
{offset: "100%", color: "#827777"},
])
.enter().append("stop")
.attr("offset", function(d) { return d.offset; })
.attr("stop-color", function(d) { return d.color; });
var link = svg.append("g")
.selectAll("line")
.data(graph.links)
.enter().append("line")
link
.style("stroke", "#aaa");
var node = svg.append("g")
.attr("class", "nodes")
.selectAll("circle")
.data(graph.nodes)
.enter().append("circle")
//I made the article/source nodes larger than attribute nodes
.attr("r", function(d){return d.category==0 ? sourceRadius : entityRadius});
node
.style("fill", "#cccccc")
.style("fill-opacity","0.9")
.style("stroke", "#424242")
.style("stroke-width", "1px");
node
.style("fill", function(d){return d.category==0 ? "url(#source-gradient)" : "url(#entity-gradient)"});
var label = svg.append("g")
.attr("class", "labels")
.selectAll("text")
.data(graph.nodes)
.enter().append("text")
.text(function(d) { return d.name; })
.attr("class", "label");
label
.style("text-anchor", "middle")
.style("font-size", function(d) {return d.category == 1 ? Math.min(2 * entityRadius, (2 * entityRadius - 8) / this.getComputedTextLength() * 15) + "px" : Math.min(2 * sourceRadius, (2 * sourceRadius - 8) / this.getComputedTextLength() * 15) + "px"; });
label
.on("mouseover", function(d){
tooltip.html(`${d.name}`);
return tooltip.style("visibility", "visible");})
.on("mousemove", function(){
return tooltip.style("top", (d3.event.pageY-10)+"px").style("left",(d3.event.pageX+10)+"px");})
node
.on("mouseover", function(d){
tooltip.html(`${d.name}`);
return tooltip.style("visibility", "visible");})
.on("mousemove", function(){
return tooltip.style("top", (d3.event.pageY-10)+"px").style("left",(d3.event.pageX+10)+"px");})
.on("mouseout", function(){return tooltip.style("visibility", "hidden");});
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; });
node
.attr("cx", function (d) { return d.x+5; })
.attr("cy", function(d) { return d.y-3; });
label
.attr("x", function(d) { return d.x; })
.attr("y", function (d) { return d.y; });
}
var tooltip = d3.select("body")
.append("div")
.style("position", "absolute")
.style("visibility", "hidden")
.style("color", "white")
.style("padding", "8px")
.style("background-color", "#626D71")
.style("border-radius", "6px")
.style("text-align", "center")
.style("width", "auto")
.text("");
}
var graphUrl = ''; //filepath or url for your data goes here
d3.json(graphUrl,function(error,data){
blogGraph(data)
});
</script>
</html>
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