Possibility to automatically group nodes for visualization purposes

[lorenzoFabbri]

Most often than not, my DAGs are rather big and complex. Visualizing them becomes hard if not impossible. It is also true that some variables in the DAG might belong to the same group. For instance, I might include age, weight, height, and sex, which can be grouped to personal characteristics. I was wondering whether it makes sense to include the possibility to plot only the grouping nodes, rather than the individual variables. If in the tibble you add a group column, it should be straightforward to then tell ggplot to use that.

[malcolmbarrett]

I'm broadly interested in this topic, both in the sense you're talking about (reducing nodes) and in the sense of supernodes with existing nodes also visualized, e.g. something like this https://ggforce.data-imaginist.com/reference/geom_mark_rect.html

That said, I haven't taken too much time to think about it yet, so I don't think I'll get around to it very soon