Small fixes

[phocks]

Hi @jtfell the charts all look good and the functions for the scatterplots seem ok. I'd just suggest maybe trying to align the tooltip when hovering to the right of the chart so not to overspill, but it's not too important, especially if we'll be displaying on pages with a right sidebar anyway.

Also I noticed the top and bottom dots are always right up the top and right down the bottom due to the extent clipping and they go above and below the axis labels. Again, maybe ask Ben if that's acceptable. We can kind of add margins by changing the .range values, but then it screws up the y axis line a bit.

$: yScale = scaleLinear()
    .domain(extent(data, (d) => d.y))
    .range([innerHeight - 30, 0 + 30]);

Anyway It all seems pretty good, but yeah as I mentioned the errors (if any) will probably come out when testing different types of charts with the data.

Feel free to merge or just copy this change. It's pretty much just fixing a VS Code TypeScript error I was getting.

If anything major breaks down the track, I can give you a hand as I've got kinda my head around the code now.

[jtfell]

Thanks @phocks! I'll talk to Ben about the margins/tooltips. I think he's keen to make maximal use of screen real estate on mobile, so having dots on the axes is probably fine. Will confirm though.

And yeah, good to have you across it. Never know what will happen on the night!