Is it possible for a node to have two parents in a vega tree?

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I'm attempting to create a Greek Gods family tree for a vega assignment and I am using vega's tree layout, however, I am unable to have a node with two parents. In addition to this problem, I cannot see a way to have two starting nodes (Kronos and Rhea). Is there any way to have a node stemming from two other nodes?

Edit: I see that there is something called a "tangled tree" in D3 that allows a node to have two parents. Is there something similar to that in Vega?

vega d3.js tree parent-child
1 Answers

I don't think this is possible unless you grouped the couples. I found this picture online that may help. Alternatively you could attempt to plot the generations with a parallel coordinates graph - but I'm not sure whether generations are really a thing with immortals...

enter image description here

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