We use Julia (running in IJulia) with D3 using either iframe communication, window.postMessage or hooking directly onto the websocket to communicate between the

We use Julia (running in IJulia) with D3 using either iframe communication, window.postMessage or hooking directly onto the websocket to communicate between the D3 viz and the Julia backend. We decided to use D3 because of the interactivity. There are performance problems with the default SVG examples when the number of visualized nodes grows so I wrote a hybrid CANVAS + SVG rendering layer. We use CANVAS for the bulk of the drawing, SVG for text nodes or a few nodes that need mouse interaction, and event delegation on the document to determine if the mouse has interacted with anything else.