Mon 21 Jul 22:43:21 CEST 2025

js/dos/ext/vis/examples/network/exampleUtil.js

@@ -0,0 +1,70 @@
+/**
+ * Created by Alex on 5/20/2015.
+ */
+
+function loadJSON(path, success, error) {
+  var xhr = new XMLHttpRequest();
+  xhr.onreadystatechange = function () {
+    if (xhr.readyState === 4) {
+      if (xhr.status === 200) {
+        success(JSON.parse(xhr.responseText));
+      }
+      else {
+        error(xhr);
+      }
+    }
+  };
+  xhr.open('GET', path, true);
+  xhr.send();
+}
+
+
+function getScaleFreeNetwork(nodeCount) {
+  var nodes = [];
+  var edges = [];
+  var connectionCount = [];
+
+  // randomly create some nodes and edges
+  for (var i = 0; i < nodeCount; i++) {
+    nodes.push({
+      id: i,
+      label: String(i)
+    });
+
+    connectionCount[i] = 0;
+
+    // create edges in a scale-free-network way
+    if (i == 1) {
+      var from = i;
+      var to = 0;
+      edges.push({
+        from: from,
+        to: to
+      });
+      connectionCount[from]++;
+      connectionCount[to]++;
+    }
+    else if (i > 1) {
+      var conn = edges.length * 2;
+      var rand = Math.floor(Math.random() * conn);
+      var cum = 0;
+      var j = 0;
+      while (j < connectionCount.length && cum < rand) {
+        cum += connectionCount[j];
+        j++;
+      }
+
+
+      var from = i;
+      var to = j;
+      edges.push({
+        from: from,
+        to: to
+      });
+      connectionCount[from]++;
+      connectionCount[to]++;
+    }
+  }
+
+  return {nodes:nodes, edges:edges};
+}