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cytoscape-cose-bilkent

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cytoscape-cose-bilkent

The CoSE layout for Cytoscape.js by Bilkent with enhanced compound node placement

  • 4.1.0
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What is cytoscape-cose-bilkent?

The cytoscape-cose-bilkent npm package is a layout algorithm for Cytoscape.js, a graph theory library. It provides a layout algorithm based on the CoSE (Compound Spring Embedder) model, which is particularly useful for visualizing compound graphs with a hierarchical structure.

What are cytoscape-cose-bilkent's main functionalities?

Basic Layout

This code initializes a Cytoscape instance with a basic graph and applies the CoSE-Bilkent layout algorithm to it.

const cy = cytoscape({
  container: document.getElementById('cy'),
  elements: [
    { data: { id: 'a' } },
    { data: { id: 'b' } },
    { data: { id: 'c' } },
    { data: { id: 'd' } },
    { data: { id: 'e' } },
    { data: { id: 'ab', source: 'a', target: 'b' } },
    { data: { id: 'bc', source: 'b', target: 'c' } },
    { data: { id: 'cd', source: 'c', target: 'd' } },
    { data: { id: 'de', source: 'd', target: 'e' } }
  ],
  layout: {
    name: 'cose-bilkent'
  }
});

Custom Layout Options

This code demonstrates how to customize the CoSE-Bilkent layout options, such as node repulsion, ideal edge length, and animation settings.

const cy = cytoscape({
  container: document.getElementById('cy'),
  elements: [
    { data: { id: 'a' } },
    { data: { id: 'b' } },
    { data: { id: 'c' } },
    { data: { id: 'd' } },
    { data: { id: 'e' } },
    { data: { id: 'ab', source: 'a', target: 'b' } },
    { data: { id: 'bc', source: 'b', target: 'c' } },
    { data: { id: 'cd', source: 'c', target: 'd' } },
    { data: { id: 'de', source: 'd', target: 'e' } }
  ],
  layout: {
    name: 'cose-bilkent',
    nodeRepulsion: 4500,
    idealEdgeLength: 50,
    edgeElasticity: 0.45,
    nestingFactor: 0.1,
    gravity: 0.25,
    numIter: 2500,
    tile: true,
    animate: 'end',
    animationDuration: 1000
  }
});

Compound Graph Layout

This code shows how to use the CoSE-Bilkent layout for a compound graph, where nodes can have parent-child relationships.

const cy = cytoscape({
  container: document.getElementById('cy'),
  elements: [
    { data: { id: 'a' } },
    { data: { id: 'b', parent: 'a' } },
    { data: { id: 'c', parent: 'a' } },
    { data: { id: 'd' } },
    { data: { id: 'e' } },
    { data: { id: 'ab', source: 'a', target: 'b' } },
    { data: { id: 'bc', source: 'b', target: 'c' } },
    { data: { id: 'cd', source: 'c', target: 'd' } },
    { data: { id: 'de', source: 'd', target: 'e' } }
  ],
  layout: {
    name: 'cose-bilkent'
  }
});

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Package last updated on 09 Sep 2019

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