Sankey visualization is not legible for porecamp data

[tayabsoomro]

The Sankey visualization needs to be altered in a way that it is legible, because with sequence runs having longer kraken report outputs, the Sankey visualization becomes less legible. Example shown below for porecamp data:

[tayabsoomro]

The commit 1cdc7b9, which removed the label and only showed it on hover also doesn't seem to be a viable solution as it is extremely sluggish. Making the labels angled or vertical might make it a little better, but that still will not be absolutely perfect solution. Another thought is to make only the labels for the leaves visible and have everything else hidden, as ultimately leaves are what actually matter.

[tayabsoomro]

The react-vis library updated the code (uber/react-vis@9b7dd29), which enables us to set an angle to the labels using labelRotation={angle}. I experimented it with also only printing the label for terminal nodes and the output looks promising, however the branches are too close together:

Results for porecamp data:

I have opened another issue at react-vis repo (uber/react-vis#913), asking them if there is a solution for that.

[tayabsoomro]

The issue has been fixed. Below is the updated result: