I'm generating networks and importing them into Cytoscape using cyREST.
I have a lot of extra information available about each node, more than can be fit into node labels. I would like the user to be able to click on a node and bring up a detail panel with this additional info. Is there any feature of Cytoscape, or an existing plugin that can do that?
There is no easy way from within CyREST to do that, although you could encode that information in a single text column and then use the 'tooltip' visual property to provide a way for a user to get the information on a mouseover. Beyond that, you would need to provide an app to integrate with your CyREST application. Several apps do exactly what you are describing (e.g. look at StringApp for an example)