Internal only streams aren't well rendered

[jameshadfield]

From the docs,

It is possible to create datasets which have labels for which there are no associated tips (as all descendent tips get assigned to other labels). Rendering of streamtrees is not perfect with such datasets as we don’t render the internal-only streamtree and thus there’s a visual break between connected streamtrees.

We can see this using the staging/stream-trees/zika-internal-streams example dataset. Firstly with the "within-internal" branch labelling:

and with the "basal-internal" labelling:

solution

Continue to not render them and amend the parent-child relationships accordingly. For the first example, we would have the "stream-root" streamtree with two direct children "lower" and "upper". For the second example we would have two stream-start streamtrees, "lower" and "upper".