The Cytoscape layout you are looking for, "cola", does not exist

I am currently utilizing Cytoscape within an Angular 2 project that incorporates Typescript and I am attempting to implement the Cola layout. So, I included the dependency in my project via npm. As I am working with Angular 2 using Typescript, I first added the JavaScript module to the angular-cli.json file followed by the index.html file. Next, in my NetworkComponent - the Angular component responsible for displaying the graph - I imported the library as shown below:

declare var cola:any;

Subsequently, I attempted to utilize the layout in this manner:

   this.cyto = cytoscape({
            container: document.getElementById("graph"),
            elements: this.graph.elements,
            style: res.json()
            });
    this.cyto.layout({name: "cola"});

However, the graph failed to display and the console generated the following error message:

Can not apply layout: No such layout 'cola' found; did you include its JS file?

While I can successfully use the concentric layout and visualize the graph, similar errors are encountered when attempting to incorporate other layout extensions like cose-bilkent and springy.

Is there a method to import the cola library and smoothly integrate it as the preferred graph layout? What potential issues could be causing this problem?

javascriptangulartypescriptcytoscape.js

Answer №1

  1. Get started with cytoscape-cola:

    npm install cytoscape-cola --save

  2. Include the cytoscape-cola module:

    import cola from 'cytoscape-cola';

  3. Integrate cola into your component:

    cytoscape.use(cola);

Once set up, you can utilize the cola layout.

Answer №2

The solution was straightforward. I realized that I had neglected to include a reference to the cola.js file in my index.html, which is a prerequisite for using cytoscape-cola.js. Initially, I assumed that only including cytoscape-cola.js would suffice, but upon adding the cola JavaScript file, everything started working as expected.

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