Is this a proper way to create a stacked bar chart both with negative and positive values? about layerchart HOT 1 OPEN

Hey @leomorpho, thanks for checking out LayerChart. It looks like you pulled part of createStackData() from utils/stack. Was there something it was lacking (I didn't spot any differences after a quick glance)

Regardless, nothing jumps out at me that could be simplified ATM, but I would like to improve grouped/stacked at some point, especially regarding tooltip/data. See #21 and #98.

I would also like grouped scales to be more integrated to <Chart>, which are really just derived scales (x1Scale derives from xScale and uses it's bandwidth instead of the chart's width). Had a chat about adding something in LayerCake, but wasn't worth it at that point (needed more investigation).

However it might be improved, I want to make sure it supports switching between grouped only, stacked only, and group and stacked, such as this example.

Speaking of examples, it would be good to add a diverging bar chart example to the docs., similar to what you have (and both stacked and simpler single bar examples), similar to these:

• https://observablehq.com/@d3/diverging-bar-chart
• https://observablehq.com/@d3/diverging-stacked-bar-chart
• https://observablehq.com/@observablehq/plot-diverging-stacked-bar

from layerchart.