Professor of Computer Science at Old Dominion University
connected_chart = {
const simulation = d3.forceSimulation(connected_data.nodes)
.force("link", d3.forceLink(connected_data.links))
.force("charge", d3.forceManyBody())
.force("center", d3.forceCenter(width / 2, height / 2));
const svg = d3.create("svg")
.attr("viewBox", [0, 0, width, height]);
const link = svg.append("g")
.attr("stroke", "#999")
.attr("stroke-opacity", 0.6)
.selectAll("line")
.data(connected_data.links)
.join("line")
.attr("stroke-width", 1);
const node = svg.append("g")
.attr("stroke", "#fff")
.attr("stroke-width", 1.5)
.selectAll("circle")
.data(connected_data.nodes)
.join("circle")
.attr("r", 10)
.attr("fill", color)
.call(drag(simulation));
node.append("title")
.text(d => d.name);
simulation.on("tick", () => {
link
.attr("x1", d => d.source.x)
.attr("y1", d => d.source.y)
.attr("x2", d => d.target.x)
.attr("y2", d => d.target.y);
node
.attr("cx", d => d.x)
.attr("cy", d => d.y);
});
invalidation.then(() => simulation.stop());
return svg.node();
}
disconnected_chart = {
const simulation = d3.forceSimulation(disconnected_data.nodes)
.force("link", d3.forceLink(disconnected_data.links))
.force("charge", d3.forceManyBody())
// instead of forceCenter, specify x,y
// .force("center", d3.forceCenter(width / 2, height / 2));
.force("x", d3.forceX())
.force("y", d3.forceY());
const svg = d3.create("svg")
// redefine viewbox for disjoint
.attr("viewBox", [-width/2, -height/2, width, height]);
const link = svg.append("g")
.attr("stroke", "#999")
.attr("stroke-opacity", 0.6)
.selectAll("line")
.data(disconnected_data.links)
.join("line")
.attr("stroke-width", 1);
const node = svg.append("g")
.attr("stroke", "#fff")
.attr("stroke-width", 1.5)
.selectAll("circle")
.data(disconnected_data.nodes)
.join("circle")
.attr("r", 10)
.attr("fill", color)
.call(drag(simulation));
node.append("title")
.text(d => d.name);
simulation.on("tick", () => {
link
.attr("x1", d => d.source.x)
.attr("y1", d => d.source.y)
.attr("x2", d => d.target.x)
.attr("y2", d => d.target.y);
node
.attr("cx", d => d.x)
.attr("cy", d => d.y);
});
invalidation.then(() => simulation.stop());
return svg.node();
}
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