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sparc-portal-demo

This demo page is built using VueJS and Tailwind CSS. It has been developed to mimic the SPARC portal found at sparc.science. In order to get this project running please refer to the Project setup section.

Project setup

npm install

Compiles and hot-reloads for development

npm run serve

Compiles and minifies for production

npm run build

Lints and fixes files

npm run lint

Customize configuration

See Configuration Reference.

Requesting data from the real-time database

SPARClink uses a Firebase real-time database as its intermediary data storage server. This allows for the backend citation extraction system to reside in a separate server and allow the frontend to pull data asynchronously. If you prefer another data storage mechanism please add and modify the appropriate end point in the SPARClink component found in the frontend/src/components/SparcLink/SparcLink.vue file. The url endpoint for the GET request can be found in the organizeData function in the methods section. Our backend systems only allows authenticated users to write to the database so you will need to refer to the appropriate User ID when referencing the object.

Adjusting the physics of the visualization

d3.js provides extensive documentation on the physics that we implement on our visualizations. If you would like to modify how the graph behaves, the best place to start is at the force simulations in the drawCanvas function. d3.js also provides the option of rendering graphs in SVG elements but the limit of nodes that a simulation can accept, before there is a considerable performance drop, is low.

this.simulation = d3
  .forceSimulation(nodes)
  .force(
    "link",
    d3.forceLink(links).id((d) => d.id)
  )
  .force("x", d3.forceX())
  .force("y", d3.forceY())
  .force("charge", d3.forceManyBody().strength(this.strength))
  .force("center", d3.forceCenter(WIDTH / 2, HEIGHT / 2));

You may define your own forces to act on the nodes or use d3's default forces. Please be aware that the canvas itself has a limit on the amount of nodes that can be drawn in its context before performance takes a hit. Within our own testing 8,000 to 10,000 nodes is the limit of acceptable performance. If your database is larger than this amount, please see if you can filter out any nodes that are present in the data.

Adjusting the wordcloud

The d3-cloud library is used to generate the visualizations. To modify the rendered image, edit the lines of code below. The data for the function is returned from the backend api found here.

var layout = cloud()
  .size([300,300])
  .words(
    keywords.map(function (d, i) {
      return { text: d, size: 10 + values[i] * 90 };
    })
  )
  .padding(5)
  .rotate(0)
  .font("Asap, Verdana, Arial, Helvetica, sans-serif")
  .fontSize(function (d) {
    return d.size;
  })
  .on("end", draw);