When using `fill: "count"` with the group or bin transform, implicitly set `color: {zero: true}` about plot HOT 3 OPEN

Is this not the case with any scale, not just color? In other words should we not default y to zero: true for

Plot.dot(penguins, Plot.groupX({ y: "count" }, { x: "species" })).plot()

from plot.

Good question! Often we don’t think about it because the bar or rect mark requires zero, and the r scale by default includes zero. What do you think? And in any case you should be able to opt-out of this by setting zero: false on the scale.

from plot.

I think it would make sense to generalize — I've noticed that often, when using a line mark with a bin transform; the y domain then starts at 1 (or whatever the lower count is), and you have to "fix" this by adding a ruleY([0]).

from plot.