The avatar for @ericmauviere
Éric Mauvière
Statistician, map-maker, dataviz consultant and trainer, Observable ambassador & R instructor. I enjoy explaining things i love in detail, the most clearly i can, and building live analytical opendataflows. @ericmauviere
Published
Edited
Apr 19, 2022
13 stars
17
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edges = FileAttachment("mobilite_edges.csv").csv()
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nodes = FileAttachment("mobilite_nodes.csv").csv()
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graph = {
let graph = new Graph({type: 'undirected', weighted: true, weight: 'weight'})
nodes.forEach(n => {
graph.addNode(n.id)
})
edges.forEach((e) => {
graph.addEdge(e.source, e.target, {weight: +e.weight, size: (+e.size - 1)})
})
GraphologyLibrary.communitiesLouvain.assign(graph, {
resolution: 1 // the higher, more communities
})
return graph
}
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renderer = {
GraphologyLibrary.layout.circular.assign(graph) // Disposition de départ. circular peut être remplacé par random ou circlepack
let sensibleSettings = GraphologyLibrary.layoutForceAtlas2.inferSettings(graph)
//sensibleSettings.gravity = 0.01
//sensibleSettings.scalingRatio = 10
sensibleSettings.outboundAttractionDistribution = true

GraphologyLibrary.layoutForceAtlas2.assign(graph, {iterations: 1000, settings: sensibleSettings, getEdgeWeight: "weight"})

GraphologyLibrary.layoutNoverlap.assign(graph) // traitement complémentaire pour réduire les superpositions

add_colors_sizes_to_graph() // ajout d'infos au graphe pour conversion en variables visuelles : couleurs et taille des cercles

return new Sigma.Sigma(graph, document.getElementById('sigma-container'),
{labelRenderedSizeThreshold: 2.5} // densité réglable d'étiquettes de villes
)
}
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graph.degree('Toulouse')
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