Don't animate a scatter plot as a time scatter

[sophiamersmann]

Animating a time scatter can be overwhelming. It would be better if we animated the dots only.

Example of a scatter plot animation:

https://github.com/owid/owid-grapher/assets/12461810/557c3d11-9b5e-4394-ae7b-4f67f7afe2c9

More videos in this Slack thread: https://owid.slack.com/archives/C0149NKLZAM/p1697710951929099

[toni-sharpe]

I thought I'd share this as I looked at what it would be like slower, it seemed to me that otiginal example is too fast. Here it is anyway. I still think there's problems, but I thought I'd share anyway.

Original (~1s)

https://github.com/owid/owid-grapher/assets/10499070/b52a4855-3594-4c93-a54f-9d45421d3ecc

Slowed 10X

• I had to cut it at around 7s as it needed to be less than 10mb.
• It would benefit from single year jumps not five year jumps too.
• Even monthly jumps (data permitting)

That being said, it's a dense graph, and even at the slower speed it could probably do with fewer points. I don't think it's the right graph to animate, but possibly there's no issue animating this graph-type.

https://github.com/owid/owid-grapher/assets/10499070/19a24f71-606e-4575-ad9c-d1f151ff7f62

[danyx23]

@sophiamersmann had a PR up but that then showed some weird behaviour around single dots being visible. If this doesn't happen very often (which seems unlikely) then we should probably just ship the simple version and accept that single points are a bit funky when playing a scatter.