Lets say you have a Link Chart that the user is interacting with and moving nodes around, etc.
Lets also say that the Link Chart is not fully loaded and has the + sign as a button on some of the nodes that can be expanded further.
So when the user clicks the + button I would like to do an ajax call to retrieve the additional nodes starting from that point and then display on the canvas.
Is something like that possible with out having to reload the whole link chart from the beginning and losing all the positional changes the user had made to the diagram? Are there any examples?