Kanit Wongsuphasawat

For implementation, you can look at `zero()` in `src/compile/scale/properties.ts`.

Btw, look at existing behavior, I just realize that "always" isn't very accurate. So maybe: ``` zero: "all-marks" | "bar-and-area-only" ```

cc: @domoritz @arvind @jheer any opinion about the config name?

FWIW, https://github.com/vega/vega/issues/1471 is related to this. (Adding dynamic zero with threshold is probably gonna be a better default than always off.) In terms of sequencing, I think add this config...

Some more thoughts: - Btw, I think "range mark" is a bit vague -- I don't think we have use the key word anywhere else. - Suppose we add dynamic...

fixed in https://github.com/vega/vega-lite/pull/8354

Do we have examples for bar and stacked bar?

> Vega-Lite already supports facets of facets using the facet operator We actually do NOT have an official support for it in the JSON schema yet, since it doesn't always...

I think this will be super useful, but may require that all transforms and scales properties in Vega that take fields must take signals for the field names too, so...

@jwoLondon that's a very nice trick!