I love to build dataviz for insight discovery. I also love to put technology to the service of humanity
// Computes how many friends in common do two people have. Receives either the nodes and links or the connectionSets
function getCommonConnections({ links, connectionsSets }) {
const linksCC = [];
const mapCC = new Map();
if (links !== undefined && connectionsSets === undefined) {
console.log("building connection sets");
connectionsSets = getConnectionsSets({ links });
}
// function getKey(si, ti) {
// return si < ti ? `${si}~${ti}` : `${ti}~${si}`;
// }
const before = performance.now();
for (let [n1, s1] of connectionsSets) {
for (let [n2, s2] of connectionsSets) {
if (n1 === n2 || !n1 || !n2) continue;
const intersectionSet = new Set([...s1].filter((d) => s2.has(d)));
if (intersectionSet.size) {
linksCC.push({
source: n1,
target: n2,
value: intersectionSet.size,
commonConnections: intersectionSet
});
// mapCC.set(key, intersectionSet);
}
}
}
// console.log("Finished building the mapCC", performance.now() - before);
// for (let [k, s] of mapCC) {
// const [source, target] = k.split("~");
// linksCC.push({source, target, value: s.size, connectionSet: set })
// }
console.log("Finished creating the array", performance.now() - before);
return linksCC;
}
// Transforms a set of links from d3 link style
function getConnectionsSets({ links }) {
const mapConnections = new Map();
function getSet(user) {
let set = mapConnections.get(user);
if (!set) {
set = new Set();
}
return set;
}
for (let l of links) {
const set = getSet(l.source);
set.add(l.target);
mapConnections.set(l.source, set);
}
return mapConnections;
}
import {data} from "3fb4e59272163b09"
ccs = getCommonConnections(data)
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