GUIDE
- Left-click and drag the background to move the graph
- Left-click and drag the nodes to reorganize
- Left-click a node to view first level connections
- Double left-click a node to navigate to its page
- Double left-click the background to zoom in
- Right-click the background to zoom out
sigma.utils.pkg('sigma.canvas.nodes');
sigma.canvas.nodes.image = (function() {
var _cache = {},
_loading = {},
_callbacks = {};
// Return the renderer itself:
var renderer = function(node, context, settings) {
var args = arguments,
prefix = settings('prefix') || '',
size = node[prefix + 'size'],
color = node.color || settings('defaultNodeColor'),
url = node.url;
if (_cache[url]) {
context.save();
// Draw the clipping disc:
context.beginPath();
context.arc(
node[prefix + 'x'],
node[prefix + 'y'],
node[prefix + 'size'],
0,
Math.PI * 2,
true
);
context.closePath();
context.clip();
// Draw the image
context.drawImage(
_cache[url],
node[prefix + 'x'] - size,
node[prefix + 'y'] - size,
2 * size,
2 * size
);
// Quit the "clipping mode":
context.restore();
// Draw the border:
context.beginPath();
context.arc(
node[prefix + 'x'],
node[prefix + 'y'],
node[prefix + 'size'],
0,
Math.PI * 2,
true
);
context.lineWidth = 1;
context.strokeStyle = node.color || settings('defaultNodeColor');
context.stroke();
} else {
sigma.canvas.nodes.image.cache(url);
sigma.canvas.nodes.def.apply(
sigma.canvas.nodes,
args
);
}
};
// Let's add a public method to cache images, to make it possible to
// preload images before the initial rendering:
renderer.cache = function(url, callback) {
if (callback)
_callbacks[url] = callback;
if (_loading[url])
return;
var img = new Image();
img.onload = function() {
_loading[url] = false;
_cache[url] = img;
if (_callbacks[url]) {
_callbacks[url].call(this, img);
delete _callbacks[url];
}
};
_loading[url] = true;
img.src = url;
};
return renderer;
})();
var i,
s,
o,
offset_left = 0.5,
N = 1,
E = 40,
C = 5,
d = 0.5,
cs = [],
g = {
nodes: [],
edges: []
};
if (!sigma.classes.graph.hasMethod('neighbors')){
sigma.classes.graph.addMethod('neighbors', function(nodeId) {
var k,
neighbors = {},
index = this.allNeighborsIndex[nodeId] || {};
for (k in index)
neighbors[k] = this.nodesIndex[k];
return neighbors;
});
}
//adding the central node
g.nodes.push({
id: 121115,
label: 'Soufyan Fakroun',
type: 'image',
url: 'https://research.pasteur.fr/wp-content/uploads/2020/02/research_pasteur-img_20200204_080426_01-150x150.jpg',
x: 0,
y: 0,
size: 30,
color: '#DDDDDD'
});
var biggest_node_size = 0;
N=2
// adding node
var x_node = Math.cos(2 * 0 * Math.PI / N) * 10;
var y_node = Math.sin(2 * 0 * Math.PI / N) * 10;
g.nodes.push({
id: 222649,
label: 'PROJECT: Elucidating envelope evolution and the diderm-to-monoderm transition in Bacteria (ENVOL)',
x: x_node,
y: y_node,
type: 'image',
url: '',
page_url: 'https://research.pasteur.fr/fr/project/222649/',
size: 35,
color: '#DDDDDD'
});
//link content to central post
g.edges.push({
id: 121115222649,
size: 0.5,
source: 121115,
target: 222649,
});
//check if content already exist
if (x_node<0){
x_site = x_node + ((Math.random() * 2)-1) - offset_left;
}else{
x_site = x_node + ((Math.random() * 2)-1) + offset_left;
}
if (y_node<0){
y_site = y_node + ((Math.random() * 2)-1) - offset_left;
}else{
y_site = y_node + ((Math.random() * 2)-1) + offset_left;
}
// adding site
g.nodes.push({
id: 4335,
label: 'Christophe Beloin',
type: 'image',
url: 'https://research.pasteur.fr/wp-content/uploads/2015/09/research.pasteur.fr_christophe2-150x150.jpg',
page_url: 'https://research.pasteur.fr/fr/member/christophe-beloin/',
x: x_site,
y: y_site,
size: 10,
color: '#dddddd'
});
//link to content
g.edges.push({
id: 2226494335,
size: 0.5,
source: 222649,
target: 4335 });
//check if content already exist
if (x_node<0){
x_site = x_node + ((Math.random() * 2)-1) - offset_left;
}else{
x_site = x_node + ((Math.random() * 2)-1) + offset_left;
}
if (y_node<0){
y_site = y_node + ((Math.random() * 2)-1) - offset_left;
}else{
y_site = y_node + ((Math.random() * 2)-1) + offset_left;
}
// adding site
g.nodes.push({
id: 1563,
label: 'Anna Sartori-Rupp',
type: 'image',
url: 'https://research.pasteur.fr/wp-content/uploads/2020/04/research_pasteur-foto-mia-cut-2-150x150.jpg',
page_url: 'https://research.pasteur.fr/fr/member/anna-sartori-rupp/',
x: x_site,
y: y_site,
size: 10,
color: '#dddddd'
});
//link to content
g.edges.push({
id: 2226491563,
size: 0.5,
source: 222649,
target: 1563 });
//check if content already exist
// update node size depending on the amount of edges
g.nodes.forEach(function(n) {
if (n.id == 121115) {
n.size = n.size + 8;
}
});
//link to content
g.edges.push({
id: 222649121115,
size: 0.5,
source: 222649,
target: 121115 });
//check if content already exist
if (x_node<0){
x_site = x_node + ((Math.random() * 2)-1) - offset_left;
}else{
x_site = x_node + ((Math.random() * 2)-1) + offset_left;
}
if (y_node<0){
y_site = y_node + ((Math.random() * 2)-1) - offset_left;
}else{
y_site = y_node + ((Math.random() * 2)-1) + offset_left;
}
// adding site
g.nodes.push({
id: 4286,
label: 'Simonetta Gribaldo',
type: 'image',
url: 'https://research.pasteur.fr/wp-content/uploads/2017/10/research_pasteur-photo-simo2-150x150.png',
page_url: 'https://research.pasteur.fr/fr/member/simonetta-gribaldo/',
x: x_site,
y: y_site,
size: 10,
color: '#dddddd'
});
//link to content
g.edges.push({
id: 2226494286,
size: 0.5,
source: 222649,
target: 4286 });
// adding node
var x_node = Math.cos(2 * 1 * Math.PI / N) * 10;
var y_node = Math.sin(2 * 1 * Math.PI / N) * 10;
g.nodes.push({
id: 24264,
label: 'TEAM: Biologie Evolutive de la Cellule Microbienne',
x: x_node,
y: y_node,
type: 'image',
url: '',
page_url: 'https://research.pasteur.fr/fr/team/evolutionary-biology-of-the-microbial-cell/',
size: 35,
color: '#DDDDDD'
});
//link content to central post
g.edges.push({
id: 12111524264,
size: 0.5,
source: 121115,
target: 24264,
});
//check if content already exist
if (x_node<0){
x_site = x_node + ((Math.random() * 2)-1) - offset_left;
}else{
x_site = x_node + ((Math.random() * 2)-1) + offset_left;
}
if (y_node<0){
y_site = y_node + ((Math.random() * 2)-1) - offset_left;
}else{
y_site = y_node + ((Math.random() * 2)-1) + offset_left;
}
// adding site
g.nodes.push({
id: 57997,
label: 'Guillaume Borrel',
type: 'image',
url: 'https://research.pasteur.fr/wp-content/uploads/2015/11/research.pasteur.fr_photo-guillaume-150x150.jpg',
page_url: 'https://research.pasteur.fr/fr/member/guillaume-borrel/',
x: x_site,
y: y_site,
size: 10,
color: '#dddddd'
});
//link to content
g.edges.push({
id: 2426457997,
size: 0.5,
source: 24264,
target: 57997 });
//check if content already exist
if (x_node<0){
x_site = x_node + ((Math.random() * 2)-1) - offset_left;
}else{
x_site = x_node + ((Math.random() * 2)-1) + offset_left;
}
if (y_node<0){
y_site = y_node + ((Math.random() * 2)-1) - offset_left;
}else{
y_site = y_node + ((Math.random() * 2)-1) + offset_left;
}
// adding site
g.nodes.push({
id: 90107,
label: 'Najwa Taib',
type: 'image',
url: 'https://research.pasteur.fr/wp-content/uploads/2017/05/research_pasteur-photo_ntaib-150x150.jpeg',
page_url: 'https://research.pasteur.fr/fr/member/najwa-taib/',
x: x_site,
y: y_site,
size: 10,
color: '#dddddd'
});
//link to content
g.edges.push({
id: 2426490107,
size: 0.5,
source: 24264,
target: 90107 });
//check if content already exist
if (x_node<0){
x_site = x_node + ((Math.random() * 2)-1) - offset_left;
}else{
x_site = x_node + ((Math.random() * 2)-1) + offset_left;
}
if (y_node<0){
y_site = y_node + ((Math.random() * 2)-1) - offset_left;
}else{
y_site = y_node + ((Math.random() * 2)-1) + offset_left;
}
// adding site
g.nodes.push({
id: 102806,
label: 'Jerzy Witwinowski',
type: 'image',
url: 'https://research.pasteur.fr/wp-content/uploads/2018/02/research_pasteur-jw3-150x150.jpg',
page_url: 'https://research.pasteur.fr/fr/member/jerzy-witwinowski/',
x: x_site,
y: y_site,
size: 10,
color: '#dddddd'
});
//link to content
g.edges.push({
id: 24264102806,
size: 0.5,
source: 24264,
target: 102806 });
//check if content already exist
if (x_node<0){
x_site = x_node + ((Math.random() * 2)-1) - offset_left;
}else{
x_site = x_node + ((Math.random() * 2)-1) + offset_left;
}
if (y_node<0){
y_site = y_node + ((Math.random() * 2)-1) - offset_left;
}else{
y_site = y_node + ((Math.random() * 2)-1) + offset_left;
}
// adding site
g.nodes.push({
id: 113642,
label: 'Caroline Binet',
type: 'image',
url: 'https://research.pasteur.fr/wp-content/uploads/2018/10/research_pasteur-njkyody3-2-150x150.jpg',
page_url: 'https://research.pasteur.fr/fr/member/caroline-binet/',
x: x_site,
y: y_site,
size: 10,
color: '#dddddd'
});
//link to content
g.edges.push({
id: 24264113642,
size: 0.5,
source: 24264,
target: 113642 });
//check if content already exist
if (x_node<0){
x_site = x_node + ((Math.random() * 2)-1) - offset_left;
}else{
x_site = x_node + ((Math.random() * 2)-1) + offset_left;
}
if (y_node<0){
y_site = y_node + ((Math.random() * 2)-1) - offset_left;
}else{
y_site = y_node + ((Math.random() * 2)-1) + offset_left;
}
// adding site
g.nodes.push({
id: 148650,
label: 'Basile Beaud',
type: 'image',
url: 'https://research.pasteur.fr/wp-content/uploads/2020/10/research_pasteur-8a951152-5fa0-4920-99f6-30c8a2ec3081-150x150.jpeg',
page_url: 'https://research.pasteur.fr/fr/member/fr-basile-beaud/',
x: x_site,
y: y_site,
size: 10,
color: '#dddddd'
});
//link to content
g.edges.push({
id: 24264148650,
size: 0.5,
source: 24264,
target: 148650 });
//check if content already exist
if (x_node<0){
x_site = x_node + ((Math.random() * 2)-1) - offset_left;
}else{
x_site = x_node + ((Math.random() * 2)-1) + offset_left;
}
if (y_node<0){
y_site = y_node + ((Math.random() * 2)-1) - offset_left;
}else{
y_site = y_node + ((Math.random() * 2)-1) + offset_left;
}
// adding site
g.nodes.push({
id: 168402,
label: 'Camille Martin-Gallausiaux',
type: 'image',
url: 'https://research.pasteur.fr/wp-content/uploads/2021/10/research_pasteur-camille-martin-gallausiaux-photo-camille-150x150.jpg',
page_url: 'https://research.pasteur.fr/fr/member/camille-martin-gallausiaux/',
x: x_site,
y: y_site,
size: 10,
color: '#dddddd'
});
//link to content
g.edges.push({
id: 24264168402,
size: 0.5,
source: 24264,
target: 168402 });
//check if content already exist
if (x_node<0){
x_site = x_node + ((Math.random() * 2)-1) - offset_left;
}else{
x_site = x_node + ((Math.random() * 2)-1) + offset_left;
}
if (y_node<0){
y_site = y_node + ((Math.random() * 2)-1) - offset_left;
}else{
y_site = y_node + ((Math.random() * 2)-1) + offset_left;
}
// adding site
g.nodes.push({
id: 188060,
label: 'Anna Kurowska',
type: 'image',
url: 'https://research.pasteur.fr/wp-content/uploads/2022/10/research_pasteur-anna-kurowska-img-0644-150x150.jpg',
page_url: 'https://research.pasteur.fr/fr/member/anna-kurowska/',
x: x_site,
y: y_site,
size: 10,
color: '#dddddd'
});
//link to content
g.edges.push({
id: 24264188060,
size: 0.5,
source: 24264,
target: 188060 });
//check if content already exist
// update node size depending on the amount of edges
g.nodes.forEach(function(n) {
if (n.id == 121115) {
n.size = n.size + 8;
}
});
//link to content
g.edges.push({
id: 24264121115,
size: 0.5,
source: 24264,
target: 121115 });
//check if content already exist
if (x_node<0){
x_site = x_node + ((Math.random() * 2)-1) - offset_left;
}else{
x_site = x_node + ((Math.random() * 2)-1) + offset_left;
}
if (y_node<0){
y_site = y_node + ((Math.random() * 2)-1) - offset_left;
}else{
y_site = y_node + ((Math.random() * 2)-1) + offset_left;
}
// adding site
g.nodes.push({
id: 196215,
label: 'Romain Villa',
type: 'image',
url: 'https://research.pasteur.fr/wp-content/uploads/2023/02/research_pasteur-romain-villa-img-20220605-wa0005-e1675352679136-150x150.jpg',
page_url: 'https://research.pasteur.fr/fr/member/romain-villa/',
x: x_site,
y: y_site,
size: 10,
color: '#dddddd'
});
//link to content
g.edges.push({
id: 24264196215,
size: 0.5,
source: 24264,
target: 196215 });
//check if content already exist
if (x_node<0){
x_site = x_node + ((Math.random() * 2)-1) - offset_left;
}else{
x_site = x_node + ((Math.random() * 2)-1) + offset_left;
}
if (y_node<0){
y_site = y_node + ((Math.random() * 2)-1) - offset_left;
}else{
y_site = y_node + ((Math.random() * 2)-1) + offset_left;
}
// adding site
g.nodes.push({
id: 224418,
label: 'Valentin Tetaud',
type: 'image',
url: 'https://research.pasteur.fr/wp-content/uploads/2024/04/research_pasteur-unknown-150x150.jpeg',
page_url: 'https://research.pasteur.fr/fr/member/valentin-tetaud/',
x: x_site,
y: y_site,
size: 10,
color: '#dddddd'
});
//link to content
g.edges.push({
id: 24264224418,
size: 0.5,
source: 24264,
target: 224418 });
//check if content already exist
if (x_node<0){
x_site = x_node + ((Math.random() * 2)-1) - offset_left;
}else{
x_site = x_node + ((Math.random() * 2)-1) + offset_left;
}
if (y_node<0){
y_site = y_node + ((Math.random() * 2)-1) - offset_left;
}else{
y_site = y_node + ((Math.random() * 2)-1) + offset_left;
}
// adding site
g.nodes.push({
id: 224714,
label: 'Brittany Baker',
type: 'image',
url: 'https://research.pasteur.fr/wp-content/uploads/2024/04/research_pasteur-enbrittany-baker-img-3840-150x150.jpeg',
page_url: 'https://research.pasteur.fr/fr/member/brittany-baker/',
x: x_site,
y: y_site,
size: 10,
color: '#dddddd'
});
//link to content
g.edges.push({
id: 24264224714,
size: 0.5,
source: 24264,
target: 224714 });
//check if content already exist
if (x_node<0){
x_site = x_node + ((Math.random() * 2)-1) - offset_left;
}else{
x_site = x_node + ((Math.random() * 2)-1) + offset_left;
}
if (y_node<0){
y_site = y_node + ((Math.random() * 2)-1) - offset_left;
}else{
y_site = y_node + ((Math.random() * 2)-1) + offset_left;
}
// adding site
g.nodes.push({
id: 241198,
label: 'Julie Mathieu',
type: 'image',
url: 'https://research.pasteur.fr/wp-content/uploads/2025/03/research_pasteur-auto-draft-img-20250326-102246-150x150.jpg',
page_url: 'https://research.pasteur.fr/fr/member/julie-mathieu/',
x: x_site,
y: y_site,
size: 10,
color: '#dddddd'
});
//link to content
g.edges.push({
id: 24264241198,
size: 0.5,
source: 24264,
target: 241198 });
//check if content already exist
if (x_node<0){
x_site = x_node + ((Math.random() * 2)-1) - offset_left;
}else{
x_site = x_node + ((Math.random() * 2)-1) + offset_left;
}
if (y_node<0){
y_site = y_node + ((Math.random() * 2)-1) - offset_left;
}else{
y_site = y_node + ((Math.random() * 2)-1) + offset_left;
}
// adding site
g.nodes.push({
id: 243204,
label: 'Emma Bruder',
type: 'image',
url: 'https://research.pasteur.fr/wp-content/uploads/2025/05/research_pasteur-emma-bruder-emma-bruder-150x150.jpeg',
page_url: 'https://research.pasteur.fr/fr/member/emma-bruder/',
x: x_site,
y: y_site,
size: 10,
color: '#dddddd'
});
//link to content
g.edges.push({
id: 24264243204,
size: 0.5,
source: 24264,
target: 243204 });
//check if content already exist
if (x_node<0){
x_site = x_node + ((Math.random() * 2)-1) - offset_left;
}else{
x_site = x_node + ((Math.random() * 2)-1) + offset_left;
}
if (y_node<0){
y_site = y_node + ((Math.random() * 2)-1) - offset_left;
}else{
y_site = y_node + ((Math.random() * 2)-1) + offset_left;
}
// adding site
g.nodes.push({
id: 250143,
label: 'Kathryn Appler',
type: 'image',
url: 'https://research.pasteur.fr/wp-content/uploads/2025/09/research_pasteur-whatsapp-image-2025-09-23-at-19.59.26-whatsapp-image-2025-09-23-at-19.59.26-150x150.jpeg',
page_url: 'https://research.pasteur.fr/fr/member/250143/',
x: x_site,
y: y_site,
size: 10,
color: '#dddddd'
});
//link to content
g.edges.push({
id: 24264250143,
size: 0.5,
source: 24264,
target: 250143 });
//check if content already exist
if (x_node<0){
x_site = x_node + ((Math.random() * 2)-1) - offset_left;
}else{
x_site = x_node + ((Math.random() * 2)-1) + offset_left;
}
if (y_node<0){
y_site = y_node + ((Math.random() * 2)-1) - offset_left;
}else{
y_site = y_node + ((Math.random() * 2)-1) + offset_left;
}
// adding site
g.nodes.push({
id: 251939,
label: 'Anne Karik',
type: 'image',
url: 'https://research.pasteur.fr/wp-content/uploads/2025/10/research_pasteur-anne-karik-sans-titre-150x150.jpg',
page_url: 'https://research.pasteur.fr/fr/member/anne-karik/',
x: x_site,
y: y_site,
size: 10,
color: '#dddddd'
});
//link to content
g.edges.push({
id: 24264251939,
size: 0.5,
source: 24264,
target: 251939 });
//check if content already exist
if (x_node<0){
x_site = x_node + ((Math.random() * 2)-1) - offset_left;
}else{
x_site = x_node + ((Math.random() * 2)-1) + offset_left;
}
if (y_node<0){
y_site = y_node + ((Math.random() * 2)-1) - offset_left;
}else{
y_site = y_node + ((Math.random() * 2)-1) + offset_left;
}
// adding site
g.nodes.push({
id: 252026,
label: 'Charlotte Bunch',
type: 'image',
url: 'https://research.pasteur.fr/wp-content/uploads/2025/10/research_pasteur-charlotte-bunch-research-pasteur-charlotte-bunch-photo-cb-150x150.jpg',
page_url: 'https://research.pasteur.fr/fr/member/charlotte-bunch/',
x: x_site,
y: y_site,
size: 10,
color: '#dddddd'
});
//link to content
g.edges.push({
id: 24264252026,
size: 0.5,
source: 24264,
target: 252026 });
//check if content already exist
// update node size depending on the amount of edges
g.nodes.forEach(function(n) {
if (n.id == 4286) {
n.size = n.size + 8;
}
});
//link to content
g.edges.push({
id: 242644286,
size: 0.5,
source: 24264,
target: 4286 });
var s = new sigma({
//container: document.getElementById('graph-main'),
graph: g,
renderer: {
// IMPORTANT:
// This works only with the canvas renderer, so the
// renderer type set as "canvas" is necessary here.
container: document.getElementById('graph-main'),
type: 'canvas'
},
settings: {
minNodeSize: 6,
maxNodeSize: 35,
mouseWheelEnabled: false,
font: 'Montserrat',
labelThreshold:25,
borderSize:1,
defaultNodeBorderColor: '#999',
sideMargin:25,
}
});
// We first need to save the original colors of our
// nodes and edges, like this:
s.graph.nodes().forEach(function(n) {
n.originalColor = n.color;
});
s.graph.edges().forEach(function(e) {
e.originalColor = e.color;
});
// When a node is clicked, we check for each node
// if it is a neighbor of the clicked one. If not,
// we set its color as grey, and else, it takes its
// original color.
// We do the same for the edges, and we only keep
// edges that have both extremities colored.
s.bind('clickNode', function(e) {
var nodeId = e.data.node.id,
toKeep = s.graph.neighbors(nodeId);
toKeep[nodeId] = e.data.node;
s.graph.nodes().forEach(function(n) {
if (toKeep[n.id])
n.color = '#35a9f5';
else
n.color = '#dddddd';
});
s.graph.edges().forEach(function(e) {
if (toKeep[e.source] && toKeep[e.target])
e.color = '#35a9f5';
else
e.color = '#dddddd';
});
// Since the data has been modified, we need to
// call the refresh method to make the colors
// update effective.
s.refresh();
});
// When the stage is clicked, we just color each
// node and edge with its original color.
s.bind('clickStage', function(e) {
s.graph.nodes().forEach(function(n) {
n.color = n.originalColor;
});
s.graph.edges().forEach(function(e) {
e.color = e.originalColor;
});
// Same as in the previous event:
s.refresh();
});
s.bind("doubleClickNode", function (e) {
$("#canvas-wrap, .sigma-scene, .sigma-mouse").val();
ajax_load_page( e.data.node.page_url );
});
var c = s.camera;
s.bind("rightClickStage", function (e) {
sigma.misc.animation.camera(c, {
ratio: c.ratio * c.settings('zoomingRatio')
}, {
duration: 200
});
});
// Configure the noverlap layout:
var noverlapListener = s.configNoverlap({
nodeMargin: 10,
scaleNodes: 0.3,
gridSize: 1,
easing: 'quadraticInOut', // animation transition function
duration: 4000 // animation duration. Long here for the purposes of this example only
});
// Bind the events:
noverlapListener.bind('start stop interpolate', function(e) {
//console.log(e.type);
if(e.type === 'start') {
//console.time('noverlap');
}
if(e.type === 'interpolate') {
//console.timeEnd('noverlap');
}
});
// Start the layout:
s.startNoverlap();
//s.refresh();
// Initialize the dragNodes plugin:
var dragListener = sigma.plugins.dragNodes(s, s.renderers[0]);
dragListener.bind('startdrag', function(event) {
});
dragListener.bind('drag', function(event) {
});
dragListener.bind('drop', function(event) {
});
dragListener.bind('dragend', function(event) {
});