The Collapsible Force Layout not only allows users to drag and drop nodes but also click high-hierarchical nodes to collapse the children under them. The VisDock toolkit has been integrated into the Collapsible Force Layout example built with D3.js (found here) by Mike Bostock. Using selection and other toolkits, users can query these nodes in the force layout environment. For more information about VisDock, please cick on the link.
Modified http://d3js.org/d3.v3.min.js to a secure url
Modified http://rawgithub.com/VisDockHub/NewVisDock/master/master/visdock.js to a secure url
Modified http://rawgithub.com/VisDockHub/NewVisDock/master/master/2D.js to a secure url
Modified http://rawgithub.com/VisDockHub/NewVisDock/master/master/IntersectionUtilities.js to a secure url
Modified http://rawgithub.com/VisDockHub/NewVisDock/master/master/visdock.utils.js to a secure url
https://d3js.org/d3.v3.min.js
https://rawgithub.com/VisDockHub/NewVisDock/master/master/visdock.js
https://rawgithub.com/VisDockHub/NewVisDock/master/master/2D.js
https://rawgithub.com/VisDockHub/NewVisDock/master/master/IntersectionUtilities.js
https://rawgithub.com/VisDockHub/NewVisDock/master/master/visdock.utils.js