Zooming with mouse wheel makes all data disappear

[mhansen]

This used to work. Can reproduce on my page http://scatterfm.markhansen.co.nz/graph.html#/user/Mark_Hansen by zooming in or out with mouse wheel. I'm on Chrome/macOS.

[mhansen]

Duped from #16:

zoom in with the scroll wheel: the whole graph goes blank and I have to restart the page

[mhansen]

User report:

scatter.fm is a very nice visualizer. However, the graph crashes every
single time when I scroll down.

[mhansen]

User report:

Love using this site a lot, only issue is I can't scroll down to zoom back out without the graph disappearing. Not sure if you still update this site but if that can be fixed would be amazing!

[mhansen]

The graph contents disappears when I scroll up or scroll down. It's not just scrolling down.

[mhansen]

Given the feature isn't working, I have removed the zoom functionality in 2d6f041.