Like this:
df |>
@vlplot(:bar,
x={:Sex, title=nothing},
y={:Freq, title=nothing},
color={:Eye, title=nothing},
column={:Hair, title=nothing}
)
The trick is that you now pass a composite value in curly brackets {} to x etc., and then you can configure more details there. All the config options for axis title are described here.
I think you need to configure your scales a bit for that. It might be enough to configure the scale to not try to come up with nice numbers on the axis like this (documented here):
df |>
@vlplot(:bar, x=:Sex, y={:Freq, scale={nice=false}}, color=:Eye, column=:Hair)
But you might also have to additionally configure your domain:
df |>
@vlplot(:bar,
x=:Sex,
y={:Freq, scale={domain=[0,100], nice=false}},
color=:Eye, column=:haircut_woman
)
I’m not entirely sure why this doesn’t work automatically. I suspect, that maybe there is a small numerical rounding error that pushes some value just slightly above 100, and then vega-lite thinks it needs to extend the axis or something like that…
You can specify a sort property for the encoding, documented here:
df |>
@vlplot(:bar,
x=:Sex,
y=:Freq,
color=:Eye,
column={:haircut_woman, sort=["Red", "Blond", "Brown", "Black"]}
)