I am developing an application that imports excel data and renders social network graph using force layout on D3.js. The application is able to import and render, but there are some features my current developer is struggling with - 1. directions of arrows not visible for some links 2. zoom/fit to canvas 3. currently it can move nodes - I also want to be able to move the links around What is needed - - look at the existing code - modify/improve to include the above features If you have idea of social network analysis that is a plus. This is a tiny portion of a much larger project. If you are capable I will want to retain you for the rest as well. One requirement is that you will have to work in consonance with the existing developer because he has been working on this for sometime, and knows the requirement.