Increase weight and change color of transmission lines

[leocaserta]

(from discussion post)

Transmission lines are thin and light, what makes it difficult to see when printed in a paper

Would it be possible to customize weight and color of transmission lines?

Thank you,

Leonardo

[victorlin]

Should be possible. Currently, weight/color/opacity are hardcoded:

https://github.com/nextstrain/auspice/blob/0728ceca060f3c3681113bf7f903f3bc81630ad3/src/components/map/mapHelpers.js#L164-L167

The solution would be to surface these somewhere in view settings.

I'd like to try doing this, but we'll discuss further at the next issue triage session.

[trvrb]

The line thickness is matched to the Bezier curve logic so that lines don't overlap when there are multiple transmission events. This is how the arcs in https://next.nextstrain.org/ebola looks nicely solid.

For one off experiments for printing, I'd suggest running Auspice dev locally and just modifying the stroke-width parameter that @victorlin points to here.