You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
127 lines
2.5 KiB
127 lines
2.5 KiB
/**
|
|
* 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};
|
|
}
|
|
|
|
var randomSeed = 764; // Math.round(Math.random()*1000);
|
|
function seededRandom() {
|
|
var x = Math.sin(randomSeed++) * 10000;
|
|
return x - Math.floor(x);
|
|
}
|
|
|
|
function getScaleFreeNetworkSeeded(nodeCount) {
|
|
var nodes = [];
|
|
var edges = [];
|
|
var connectionCount = [];
|
|
randomSeed = 764;
|
|
|
|
// 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(seededRandom() * 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};
|
|
}
|