concentric circle visualization - ability to visualize multiple EM metrics in the same node

[risserlin]

Often I find myself swapping between dataset colouring and NES significant as I want to see which dataset the node belongs to and at the same time see if it is up or down regulated as I sort out the network.

It would be really good if we could visualize both at the same time.

I was thinking maybe concentric circles where one circle is the dataset colourging and the other circle is NES (in my above example).